10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 or 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the Quarterly Period Ended March 31, 2022

or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from            to          

Commission File Number 001-03970

HARSCO CORPORATION

(Exact name of registrant as specified in its charter) 

Delaware			23-1483991
(State or other jurisdiction of incorporation or organization)			(I.R.S. employer identification number)
350 Poplar Church Road,	Camp Hill,	Pennsylvania	17011
(Address of principal executive offices)			(Zip Code)

Registrant’s telephone number, including area code  717-763-7064 

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common stock, par value $1.25 per share	HSC	New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15 (d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes ☒ NO ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).   Yes ☒  NO ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company.  See the definitions of “large accelerated filer,” “accelerated filer” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☒		Accelerated filer	☐
Non-accelerated filer	☐	(Do not check if a smaller reporting company)	Smaller reporting company	☐
			Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐  

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  YES ☐  NO ☒

Indicate the number of shares outstanding of each of the registrant’s classes of common stock, as of the latest practicable date.

Class	Outstanding at April 29, 2022
Common stock, par value $1.25 per share	79,417,543

HARSCO CORPORATION

FORM 10-Q

INDEX

		Page
PART I — FINANCIAL INFORMATION
Item 1.	Financial Statements	4
	Condensed Consolidated Balance Sheets (Unaudited)	4
	Condensed Consolidated Statements of Operations (Unaudited)	5
	Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited)	6
	Condensed Consolidated Statements of Cash Flows (Unaudited)	7
	Condensed Consolidated Statements of Equity (Unaudited)	8
	Notes to Condensed Consolidated Financial Statements (Unaudited)	9
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	26
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	32
Item 4.	Controls and Procedures	32
PART II — OTHER INFORMATION
Item 1.	Legal Proceedings	33
Item 1A.	Risk Factors	33
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	33
Item 6.	Exhibits	34
SIGNATURES		35

2

Glossary of Defined Terms

Unless the context requires otherwise, "Harsco," the "Company," "we," "our," or "us" refers to Harsco Corporation on a consolidated basis. The Company also uses several other terms in this Quarterly Report on Form 10-Q, which are further defined below:

Term	Description
AOCI	Accumulated Other Comprehensive Income (Loss)
AXC	The former Harsco Industrial Air-X-Changers business
CERCLA	Comprehensive Environmental Response, Compensation, and Liability Act of 1980
COVID-19	The COVID-19 coronavirus pandemic
Credit Agreement	Credit Agreement governing the Senior Secured Credit Facilities
DEA	United States Drug Enforcement Agency
DTSC	California Department of Toxic Substances Control
EBITDA	Earnings before interest, tax, depreciation and amortization
ESOL	Stericycle Environmental Solutions business
FASB	Financial Accounting Standards Board
IBORs	Interbank offered rates
ICMS	Type of value-added tax in Brazil
IKG	The former Harsco Industrial IKG business
ISDA	International Swaps and Derivatives Association
LIBOR	London Interbank Offered Rates
New Term Loan	$500 million term loan raised in March 2021 under the Senior Secured Credit Facilities, maturing on March 10, 2028
Notes	5.75% Notes due July 31, 2027
OCI	Other Comprehensive Income (Loss)
PA DEP	Pennsylvania Department of Environmental Protection
Revolving Credit Facility	Multi-year revolving credit facility under the Senior Secured Credit Facility, with a facility limit of $700 million
ROU	Right of use
SBB	Federal railway system of Switzerland
SCE	Supreme Council for Environment in Bahrain
SEC	Securities and Exchange Commission
Senior Secured Credit Facilities	Primary source of borrowings comprised of the Revolving Credit Facility and the New Term Loan
SPRA	State Revenue Authorities from the State of São Paulo, Brazil
TSDF	Treatment, storage, and disposal facility permits issued under the Resource Conservation and Recovery Act
U.S. GAAP	Accounting principles generally accepted in the U.S.

3

PART I — FINANCIAL INFORMATION

ITEM 1.      FINANCIAL STATEMENTS

HARSCO CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited)

(In thousands)	March 31 2022		December 31 2021
ASSETS
Current assets:
Cash and cash equivalents	$	85,216	$	82,908
Restricted cash	4,337		4,220
Trade accounts receivable, net	385,871		377,881
Other receivables	26,128		33,059
Inventories	76,854		70,493
Prepaid expenses	32,393		31,065
Current portion of assets held-for-sale	268,590		265,413
Other current assets	13,096		9,934
Total current assets	892,485		874,973
Property, plant and equipment, net	654,765		653,913
Right-of-use assets, net	96,007		101,576
Goodwill	878,935		883,109
Intangible assets, net	393,733		402,801
Deferred income tax assets	18,207		17,883
Assets held-for-sale	66,518		71,234
Other assets	50,809		48,419
Total assets	$	3,051,459	$	3,053,908
LIABILITIES
Current liabilities:
Short-term borrowings	$	7,292	$	7,748
Current maturities of long-term debt	17,379		10,226
Accounts payable	189,896		186,126
Accrued compensation	41,780		48,165
Income taxes payable	4,085		6,378
Current portion of operating lease liabilities	25,055		25,590
Current portion of liabilities of assets held-for-sale	168,412		161,999
Other current liabilities	139,661		155,159
Total current liabilities	593,560		601,391
Long-term debt	1,422,384		1,359,446
Retirement plan liabilities	73,710		93,693
Operating lease liabilities	69,563		74,571
Liabilities of assets held-for-sale	8,326		8,492
Environmental liabilities	27,565		28,435
Deferred tax liabilities	26,832		33,826
Other liabilities	48,424		48,284
Total liabilities	2,270,364		2,248,138
COMMITMENTS AND CONTINGENCIES
HARSCO CORPORATION STOCKHOLDERS’ EQUITY
Common stock	145,261		144,883
Additional paid-in capital	218,779		215,528
Accumulated other comprehensive loss	(547,649)		(560,139)
Retained earnings	1,754,671		1,794,510
Treasury stock	(848,254)		(846,622)
Total Harsco Corporation stockholders’ equity	722,808		748,160
Noncontrolling interests	58,287		57,610
Total equity	781,095		805,770
Total liabilities and equity	$	3,051,459	$	3,053,908

See accompanying notes to unaudited condensed consolidated financial statements.

4

HARSCO CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited)

	Three Months Ended
	March 31
(In thousands, except per share amounts)	2022		2021
Revenues from continuing operations:
Service revenues	$	418,435	$	414,339
Product revenues	34,362		32,926
Total revenues	452,797		447,265
Costs and expenses from continuing operations:
Cost of services sold	346,357		329,853
Cost of products sold	30,662		27,514
Selling, general and administrative expenses	69,153		71,614
Research and development expenses	56		157
Other (income) expenses, net	(1,179)		(991)
Total costs and expenses	445,049		428,147
Operating income from continuing operations	7,748		19,118
Interest income	644		547
Interest expense	(15,092)		(16,256)
Unused debt commitment fees, amendment fees and loss on extinguishment of debt	(532)		(5,258)
Defined benefit pension income	2,410		3,934
Income (loss) from continuing operations before income taxes and equity income	(4,822)		2,085
Income tax benefit (expense) from continuing operations	(1,221)		(2,101)
Equity income (loss) of unconsolidated entities, net	(131)		(119)
Income (loss) from continuing operations	(6,174)		(135)
Discontinued operations:
Income (loss) from discontinued businesses	(39,097)		3,364
Income tax benefit (expense) from discontinued businesses	6,591		(1,664)
Income (loss) from discontinued operations, net of tax	(32,506)		1,700
Net income (loss)	(38,680)		1,565
Less: Net income attributable to noncontrolling interests	(1,159)		(1,430)
Net income (loss) attributable to Harsco Corporation	$	(39,839)	$	135
Amounts attributable to Harsco Corporation common stockholders:
Income (loss) from continuing operations, net of tax	$	(7,333)	$	(1,565)
Income (loss) from discontinued operations, net of tax	(32,506)		1,700
Net income (loss) attributable to Harsco Corporation common stockholders	$	(39,839)	$	135
Weighted-average shares of common stock outstanding	79,363		79,088
Basic earnings (loss) per common share attributable to Harsco Corporation common stockholders:
Continuing operations	$	(0.09)	$	(0.02)
Discontinued operations	(0.41)		0.02
Basic earnings (loss) per share attributable to Harsco Corporation common stockholders	$	(0.50)	$	—
Diluted weighted-average shares of common stock outstanding	79,363		79,088
Diluted earnings (loss) per common share attributable to Harsco Corporation common stockholders:
Continuing operations	$	(0.09)	$	(0.02)
Discontinued operations	(0.41)		0.02
Diluted earnings (loss) per share attributable to Harsco Corporation common stockholders	$	(0.50)	$	—

See accompanying notes to unaudited condensed consolidated financial statements.

5

HARSCO CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited)

	Three Months Ended
	March 31
(In thousands)	2022		2021
Net income (loss)	$	(38,680)	$	1,565
Other comprehensive income (loss):
Foreign currency translation adjustments, net of deferred income taxes of $(1,838) and $623 in 2022 and 2021, respectively	(2,847)		(3,296)
Net income (loss) on cash flow hedging instruments, net of deferred income taxes of $(330) and $(144) in 2022 and 2021, respectively	1,140		689
Pension liability adjustments, net of deferred income taxes of $(352) and $(338) in 2022 and 2021, respectively	13,718		3,819
Unrealized gain on marketable securities, net of deferred income taxes of $— and $(7) in 2022 and 2021, respectively	(3)		17
Total other comprehensive income (loss)	12,008		1,229
Total comprehensive income (loss)	(26,672)		2,794
Comprehensive income attributable to noncontrolling interests	(677)		(364)
Comprehensive income (loss) attributable to Harsco Corporation	$	(27,349)	$	2,430

See accompanying notes to unaudited condensed consolidated financial statements.

6

HARSCO CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

	Three Months Ended March 31
(In thousands)	2022		2021
Cash flows from operating activities:
Net income (loss)	$	(38,680)	$	1,565
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	33,604		32,748
Amortization	8,586		8,967
Deferred income tax (benefit) expense	(4,275)		(3,421)
Equity (income) loss of unconsolidated entities, net	131		119
Dividends from unconsolidated entities	178		—
Loss on early extinguishment of debt	—		2,668
Other, net	259		1,128
Changes in assets and liabilities, net of acquisitions and dispositions of businesses:
Accounts receivable	(15,364)		(16,446)
Income tax refunds receivable, reimbursable to seller	7,687		—
Inventories	(4,610)		407
Contract assets	4,843		(19,070)
Right-of-use assets	7,076		6,768
Accounts payable	1,655		(8,592)
Accrued interest payable	(7,393)		(7,320)
Accrued compensation	(5,692)		(1,541)
Advances on contracts	(7,808)		(9,698)
Operating lease liabilities	(7,063)		(6,750)
Retirement plan liabilities, net	(14,519)		(19,267)
Other assets and liabilities	7,070		14,562
Net cash used by operating activities	(34,315)		(23,173)
Cash flows from investing activities:
Purchases of property, plant and equipment	(32,958)		(27,382)
Proceeds from sales of assets	5,976		3,862
Expenditures for intangible assets	(54)		(68)
Net proceeds (payments) from settlement of foreign currency forward exchange contracts	1,061		(1,427)
Payments for settlements of interest rate swaps	(1,062)		—
Other investing activities, net	124		46
Net cash used by investing activities	(26,913)		(24,969)
Cash flows from financing activities:
Short-term borrowings, net	2,051		575
Current maturities and long-term debt:
Additions	72,005		434,873
Reductions	(2,566)		(374,530)
Stock-based compensation - Employee taxes paid	(1,377)		(2,485)
Payment of contingent consideration	(6,915)		—
Deferred financing costs	—		(6,525)
Other financing activities, net	—		(400)
Net cash provided by financing activities	63,198		51,508
Effect of exchange rate changes on cash and cash equivalents, including restricted cash	455		(710)
Net increase in cash and cash equivalents, including restricted cash	2,425		2,656
Cash and cash equivalents, including restricted cash, at beginning of period	87,128		79,669
Cash and cash equivalents, including restricted cash, at end of period	$	89,553	$	82,325
Supplementary cash flow information:
Change in accrual for purchases of property, plant and equipment included in accounts payable	$	(745)	$	1,865

See accompanying notes to unaudited condensed consolidated financial statements.

7

HARSCO CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited)

	Harsco Corporation Stockholders’ Equity
	Common Stock				Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Loss		Noncontrolling Interests
(In thousands, except share  amounts)	Issued		Treasury										Total
Balances, December 31, 2020	$	144,288	$	(843,230)	$	204,078	$	1,797,759	$	(645,741)	$	56,245	$	713,399
Net income							135				1,430		1,565
Total other comprehensive income (loss), net of deferred income taxes of $134									2,295		(1,066)		1,229
Stock appreciation rights exercised, net 3,842 shares	9		(70)		(9)								(70)
Vesting of restricted stock units and other stock grants, net 144,967 shares	312		(1,850)		(312)								(1,850)
Vesting of performance share units, net 69,127 shares	155		(1,032)		(155)								(1,032)
Amortization of unearned portion of stock-based compensation, net of forfeitures					3,342								3,342
Balances, March 31, 2021	144,764		(846,182)		206,944		1,797,894		(643,446)		56,609		716,583

	Harsco Corporation Stockholders’ Equity
(In thousands, except share amounts)	Common Stock				Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Loss		Noncontrolling Interests
	Issued		Treasury										Total
Balances, December 31, 2021	$	144,883	$	(846,622)	$	215,528	$	1,794,510	$	(560,139)	$	57,610	$	805,770
Net income							(39,839)				1,159		(38,680)
Total other comprehensive income (loss), net of deferred income taxes of $(2,520)									12,490		(482)		12,008
Vesting of restricted stock units and other stock grants, net 176,253 shares	378		(1,632)		(378)								(1,632)
Amortization of unearned portion of stock-based compensation, net of forfeitures					3,629								3,629
Balances, March 31, 2022	145,261		(848,254)		218,779		1,754,671		(547,649)		58,287		781,095

See accompanying notes to unaudited condensed consolidated financial statements.

8

HARSCO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

1.     Basis of Presentation

The Company has prepared these unaudited condensed consolidated financial statements in accordance with U.S. GAAP for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the SEC. Accordingly, the unaudited condensed consolidated financial statements do not include all information and disclosure required by U.S. GAAP for annual financial statements. The December 31, 2021 Condensed Consolidated Balance Sheet information contained in this Quarterly Report on Form 10-Q was derived from the 2021 audited consolidated financial statements.  The unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements, including the notes thereto, included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021. In the opinion of management, all adjustments (all of which are of a normal recurring nature) that are necessary for a fair statement are reflected in the unaudited condensed consolidated financial statements. 

Reclassifications

Certain reclassifications have been made to prior year amounts to conform with current year classifications.

2.     Recently Adopted and Recently Issued Accounting Standards

The following accounting standards have been adopted in 2022:

On January 1, 2022, the Company adopted changes issued by the FASB which simplified the accounting for certain financial instruments with characteristics of liabilities and equity, including convertible instruments and contracts on an entity's own equity. The adoption of these changes did not have a material impact on the Company's condensed consolidated financial statements.

On January 1, 2022, the Company adopted changes issued by the FASB which improve the transparency of government assistance received by entities. Other than expanded annual disclosures, the adoption of these changes did not have a material impact on the Company's consolidated financial statements.

The following accounting standard has been issued and becomes effective for the Company at a future date:

In March 2020, the FASB issued changes that provide companies with optional guidance to ease the potential accounting burden associated with transitioning from reference rates that are expected to be discontinued. In response to the concerns about risks of IBORs and, particularly, the risk of cessation of LIBOR, regulators in several jurisdictions around the world have undertaken reference rate reform initiatives to identify alternative reference rates that are more observable or transaction-based and less susceptible to manipulation. The changes provide optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. In January 2021, the FASB issued additional clarification changes. The changes can be adopted no later than December 31, 2022 with early adoption permitted. Management does not believe these changes will have a material impact on the Company's consolidated financial statements.

3. Dispositions

Harsco Rail Segment

In November 2021, the Company announced its intention to sell the Rail business. The sales process was ongoing during the first quarter of 2022. The former Harsco Rail Segment has historically been a separate reportable segment with primary operations in the United States, Europe and Asia Pacific.

The former Harsco Rail Segment's balance sheet positions as of March 31, 2022 and December 31, 2021 are presented as Assets held-for-sale and Liabilities of assets held-for-sale in the Condensed Consolidated Balance Sheets and are summarized as follows:

9

(in thousands)	March 31 2022		December 31 2021
Trade accounts receivable, net	$	41,546	$	33,689
Other receivables	4,615		4,740
Inventories	102,094		103,560
Current portion of contract assets	94,360		94,597
Other current assets	26,427		25,442
Property, plant and equipment, net	40,009		39,524
Right-of-use assets, net	2,664		3,108
Goodwill	13,026		13,026
Intangible assets, net	2,990		3,081
Deferred income tax assets	6,153		6,064
Other assets	1,224		6,432
Total Rail assets included in Assets held-for-sale	$	335,108	$	333,263
Accounts payable	$	42,874	$	46,076
Accrued compensation	3,023		2,171
Current portion of operating lease liabilities	1,456		1,619
Current portion of advances on contracts	53,732		62,401
Other current liabilities	67,327		49,732
Operating lease liabilities	1,474		1,775
Deferred tax liabilities	5,953		5,736
Other liabilities	898		981
Total Rail liabilities included in Liabilities of assets held-for-sale	$	176,737	$	170,491

The results of the former Harsco Rail Segment are presented as discontinued operations and, as such, have been excluded from both continuing operations and segment results for the three months ended March 31, 2022, and 2021. Certain key selected financial information included in Income (loss) from discontinued operations, net of tax for the former Harsco Rail Segment is as follows:

	Three Months Ended March 31
(In thousands)	2022		2021
Amounts directly attributable to the former Harsco Rail Segment:
Service revenues	$	6,710	$	10,109
Product revenues (a)	44,640		71,481
Cost of services sold	4,675		4,653
Cost of products sold	68,981		59,062
Income (loss) from discontinued businesses	(35,895)		5,155
Additional amounts allocated to the former Harsco Rail Segment:
Selling, general and administrative expenses (b)	$	1,649	$	—

(a) The decrease in product revenues for the three months ended March 31, 2022 as compared to the three months ended March 31, 2021 is principally due to the liquidated damages and penalties on certain long-term contracts, as discussed below.

(b) The Company has allocated directly attributable transaction costs to discontinued operations.

The Company has retained corporate overhead expenses previously allocated to the former Harsco Rail Segment of $1.0 million for each of the three months ended March 31, 2022, and 2021 as part of Selling, general and administrative expenses on the Condensed Consolidated Statements of Operations.

The Company's former Harsco Rail Segment is currently manufacturing highly-engineered equipment under large long-term fixed-price contracts with the SBB, the infrastructure manager for most of the railway in the U.K. ("Network Rail"), and the national railway company in Germany ("Deutsche Bahn"). As disclosed previously, in the fourth quarter of 2021, the Company recognized an estimated forward loss provision of $33.4 million related to these contracts. In the first quarter of 2022, the Company encountered continued delays and additional costs in the build of the machines. For the Network Rail contracts, the Company encountered additional supply chain delays in the build of the initial machine, and there were further changes to the production schedule based on the manufacturing experience gained from assembling the first unit during the quarter which had a cascading effect on the delivery schedule of remaining machines. As a result, the Company recorded a $24.2 million forward estimated loss provision for additional estimated contractual liquidated damages. The Company continues to negotiate with Network Rail regarding a reduction to these liquidated damages, which could result in additional favorable or unfavorable adjustments in future periods. For the Deutsche Bahn contract, on March 8, 2022 a European-based supplier of critical components to the project indicated it would be significantly late on the delivery of these components to the project, which has the impact of delaying the overall delivery schedule for the project. As a result, the Company recorded an additional $7.4

10

million estimated forward loss provision due principally to the estimated contractual penalties that would be triggered by this delay. For the second SBB contract, the Company recorded an additional $3.5 million forward estimated loss provision due to additional supply chain delays and cost overruns. The estimated forward loss provision represents the Company's best estimate based on currently available information. It is possible that the Company's overall estimate of liquidated damages, penalties and costs to complete these contracts may change, which would result in an additional estimated forward loss provision at such time.

The first contract with SBB is complete, and the second contract is 79% complete as of March 31, 2022. The contracts with Network Rail and Deutsche Bahn are 45% and 22% complete, respectively, as of March 31, 2022.

The following is selected financial information included on the Condensed Consolidated Statements of Cash Flows attributable to the former Harsco Rail Segment:

	Three Months Ended March 31
(In thousands)	2022		2021
Non-cash operating items
Depreciation and amortization	$	—	$	1,296
Cash flows from investing activities
Purchases of property, plant and equipment	506		365

4.    Accounts Receivable and Note Receivable

Accounts receivable consist of the following:

(In thousands)	March 31 2022		December 31 2021
Trade accounts receivable	$	392,198	$	385,143
Less: Allowance for expected credit losses	(6,327)		(7,262)
Trade accounts receivable, net	$	385,871	$	377,881
Other receivables (a)	$	26,128	$	33,059

(a) Other receivables include employee receivables, insurance receivable, tax claims and refunds and other miscellaneous items not included in Trade accounts receivable, net.

The provision for expected credit losses related to trade accounts receivable was as follows:

	Three Months Ended
	March 31
(In thousands)	2022		2021
Provision for expected credit losses and doubtful accounts related to trade accounts receivable	$	325	$	654

At March 31, 2022, $6.5 million of the Company's trade accounts receivable were past due by twelve months or more, with $3.5 million of this amount reserved. Collection of the remaining balance is still ultimately expected.

In January 2020 the Company sold IKG for $85.0 million including cash and a note receivable, subject to post-closing adjustments. The note receivable from the buyer has a face value of $40.0 million, bearing interest at 2.50%, that is paid in kind and matures on January 31, 2027. Any unpaid principal, along with any accrued but unpaid interest is payable at maturity. Prepayment is required in case of a change in control or a percentage of excess cash flow, as defined in the note receivable agreement. Because there are no scheduled payments under the terms of the note receivable, the balance is not classified as current as of March 31, 2022 and is included in the caption Other assets on the Condensed Consolidated Balance Sheet. The initial fair value of the note receivable was $34.3 million which was calculated using an average of various discounted cash flow scenarios based on anticipated timing of repayments (Level 3) and was a non-cash transaction. The note receivable is subsequently measured at amortized cost. Key inputs into the valuation model include: projected timing and amount of cash flows, pro forma debt rating, option-adjusted spread and U.S. Treasury spot rate. At March 31, 2022 the amortized cost of the note receivable was $31.4 million, compared with a fair value of $31.8 million.

(In thousands)	March 31 2022		December 31 2021
Note receivable	$	31,425	$	31,025

11

5.    Inventories

Inventories consist of the following:

(In thousands)	March 31 2022		December 31 2021
Finished goods	$	7,856	$	8,323
Work-in-process	5,963		5,393
Raw materials and purchased parts	22,276		21,188
Stores and supplies	40,759		35,589
Total inventories	$	76,854	$	70,493

6.     Property, Plant and Equipment

Property, plant and equipment consist of the following:

(In thousands)	March 31 2022		December 31 2021
Land	$	73,071	$	73,067
Land improvements	16,934		16,970
Buildings and improvements	224,746		221,236
Machinery and equipment	1,532,183		1,507,214
Uncompleted construction	59,612		63,816
Gross property, plant and equipment	1,906,546		1,882,303
Less: Accumulated depreciation	(1,251,781)		(1,228,390)
Property, plant and equipment, net	$	654,765	$	653,913

In the third quarter of 2020, a customer of the Harsco Environmental Segment in China ceased steel making operations at its steel mill site in order to relocate the operations to a new site, as a result of a government mandate to improve environmental conditions of the area. The Company will continue to provide services to the same customer at the new site. The net book value of the idled equipment associated with the previous location is approximately $20 million. The customer has entered into an agreement with the government where it will receive compensation for the losses the customer has incurred as a result of the forced shutdown. The Company has continued discussions with the customer regarding compensation, which are expected to be protracted. While the customer has initially indicated that they will not provide compensation, the Company and the customer continue to discuss and the Company is evaluating its legal position. In addition, there may be other avenues of pursuing recovery, including seeking relief directly from the local government. At this point, considering the ongoing discussions with the customer, and other avenues, the Company believes it will recover the book value of the equipment and thus does not believe it has an asset impairment as of March 31, 2022. However, the Company will continue to evaluate changes in facts and circumstances and record any impairment charge when and if indicated.

7. Leases

The components of lease expense were as follows:

	Three Months Ended
	March 31
(In thousands)	2022		2021
Finance leases:
Amortization expense	$	978	$	475
Interest on lease liabilities	183		102
Operating leases	8,069		7,896
Variable and short-term lease expense	13,343		12,102
Sublease income	(2)		(49)
Total lease expense from continuing operations	$	22,571	$	20,526

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As of March 31, 2022, the Company had additional operating leases for property and equipment that had not yet commenced with estimated operating lease obligations of approximately $16 million to be recognized upon anticipated lease commencement in the second and third quarters of 2022.

8.     Goodwill and Other Intangible Assets

The Company tests for goodwill impairment annually, or more frequently if indicators of impairment exist, or if a decision is made to dispose of a business.  The Company performs its annual goodwill impairment test as of October 1 and monitors for triggering events on an ongoing basis.  The Company determined that, as of March 31, 2022, no interim goodwill impairment testing was necessary.  However, a continued economic downturn, including continued cost inflation and labor shortages could impact the Company's future projected cash flows used to estimate fair value, and/or result in a sustained decrease in the Company's share price, which could result in an impairment charge in a future period.

Because of the lower-than-expected results for the Altek Group of the Harsco Environmental Segment for 2021 due to the timing of customer orders, the Company tested Altek's asset group's recoverability in the fourth quarter of 2021 and no impairment was recorded. The long-lived assets (other than goodwill) of the Altek Group within the Harsco Environmental Segment primarily consist of intangible assets which have a carrying value of approximately $36 million at March 31, 2022. The Company has not identified any triggering events for the Altek asset group in the first quarter of 2022. However, if actual results prove inconsistent with the Company’s assumptions and judgments of the projected cash flows, it could result in impairment of the Altek intangible assets in future periods.

9. Debt and Credit Agreements

On February 22, 2022, the Company amended its Senior Credit Facilities to reset the levels of the net debt to consolidated adjusted EBITDA ratio covenant. As a result of this amendment, the net debt to consolidated adjusted EBITDA ratio covenant was set at 5.75 for the quarter ending March 31, 2022, and then decreases quarterly by 0.25 until reaching 4.00 for the quarter ending December 31, 2023 and thereafter. In addition, upon closing on the divestiture of the former Harsco Rail Segment, the net debt to consolidated adjusted EBITDA ratio covenant will decrease by an additional 0.25, provided, however, it will not go below 4.00.

During the three months ended March 31, 2022 and 2021, the Company recognized total expenses of $0.5 million and $5.3 million, respectively, related to the amended Senior Secured Credit Facilities in the caption Unused debt commitment fees, amendment fees and loss on extinguishment of debt on the Condensed Consolidated Statements of Operations.

Long-term debt consists of the following:

(In thousands)	March 31 2022		December 31 2021
Senior Secured Credit Facilities:
New Term Loan	$	496,250	$	497,500
Revolving Credit Facility	434,000		362,000
5.75% Notes, due July 31, 2027	500,000		500,000
Other financing payable (including finance leases) in varying amounts	27,047		28,389
Total debt obligations	1,457,297		1,387,889
Less: deferred financing costs	(17,534)		(18,217)
Total debt obligations, net of deferred financing costs	1,439,763		1,369,672
Less: current maturities of long-term debt	(17,379)		(10,226)
Long-term debt	$	1,422,384	$	1,359,446

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10.  Employee Benefit Plans

	Three Months Ended
	March 31
Defined Benefit Pension Plan Income	U.S. Plans				International Plans
(In thousands)	2022		2021		2022		2021
Service cost	$	—	$	—	$	432	$	462
Interest cost	1,429		1,203		4,394		3,177
Expected return on plan assets	(2,699)		(3,050)		(10,384)		(11,331)
Recognized prior service costs	—		—		120		127
Recognized losses	1,183		1,385		3,544		4,563
Defined benefit pension plan income	$	(87)	$	(462)	$	(1,894)	$	(3,002)

	Three Months Ended
Company Contributions	March 31
(In thousands)	2022		2021
Defined benefit pension plans (U.S.)	$	446	$	2,866
Defined benefit pension plans (International)	11,357		12,622
Multiemployer pension plans	457		440
Defined contribution pension plans	3,794		3,379

The Company's estimate of expected contributions to be paid during the remainder of 2022 for the U.S. and international defined benefit pension plans is $1.3 million and $12.6 million, respectively.

11.     Income Taxes 

Income tax expense from continuing operations for the three months ended March 31, 2022 and March 31, 2021 was $1.2 million and $2.1 million, respectively. Income tax expense decreased in 2022 primarily due to change in geographic mix of income. The $1.2 million income tax expense on the $4.8 million pre-tax losses for the three months ended March 31, 2022 is due to pretax losses in various foreign jurisdictions where no tax benefit is recorded.

The reserve for uncertain tax positions at March 31, 2022 was $4.9 million, including interest and penalties.  Within the next twelve months, it is reasonably possible that $0.4 million unrecognized income tax benefits will be recognized upon settlement of tax examinations and the expiration of various statutes of limitations.

12.   Commitments and Contingencies

Environmental        

The Company is involved in a number of environmental remediation investigations and cleanups and, along with other companies, has been identified as a “potentially responsible party” for certain byproduct disposal sites.  While each of these matters is subject to various uncertainties, it is probable that the Company will agree to make payments toward funding certain of these activities, and it is possible that some of these matters will be decided unfavorably to the Company.  The Company has evaluated its potential liability and its financial exposure is dependent upon such factors as the continuing evolution of environmental laws and regulatory requirements, the availability and application of technology, the allocation of cost among potentially responsible parties, the years of remedial activity required and the remediation methods selected. 

The Company evaluates its liability for future environmental remediation costs on a quarterly basis. Although actual costs to be incurred at identified sites in future periods may vary from the estimates (given inherent uncertainties in evaluating environmental exposures), the Company does not expect that any costs that are reasonably possible to be incurred by the Company in connection with environmental matters in excess of the amounts accrued would have a material adverse effect on the Company's financial condition, results of operations or cash flows.

The following table summarizes information related to the location and undiscounted amount of the Company's environmental liabilities:

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(In thousands)	March 31 2022		December 31 2021
Current portion of environmental liabilities (a)	$	7,533	$	7,338
Long-term environmental liabilities	27,565		28,435
Total environmental liabilities	$	35,098	$	35,773

(a)    The current portion of environmental liabilities is included in the caption Other current liabilities on the Condensed Consolidated Balance Sheets.

Legal Proceedings

In the ordinary course of business, the company is a defendant or party to various claims and lawsuits, including those discussed below.

On March 28, 2018, the United States Environmental Protection Agency (the “EPA”) conducted an inspection of ESOL’s off-site waste management facility in Detroit, MI. On November 23, 2021, the EPA proposed a civil penalty of $390,092 as part of a proposed Administrative Consent Order for alleged improper air emissions at the site. The allegations in the proposed Administrative Consent Order and civil penalty relate exclusively to the period prior the Company’s purchase of the ESOL business. The Company is vigorously contesting the allegations. While it is the Company's position that any loss related to this issue will be recoverable under indemnity rights under the ESOL purchase agreement and representations and warranties insurance policies purchased by the Company, there can be no assurance that the Company's position will ultimately prevail.

On January 27, 2020, the U.S. EPA issued a Notice of Potential Liability to the Company, along with several other companies, concerning the Newtown Creek Superfund Site located in Kings and Queens Counties in New York. The Notice alleges certain facilities formerly owned or operated by subsidiaries of the Company may have resulted in the discharge of hazardous substances into Newtown Creek or its Dutch Kills tributary. The site has been subject to CERCLA response activities since approximately 2011. The U.S. EPA expects to propose a sitewide cleanup plan no sooner than 2024 and announced in July 2021 that it would defer its decision on a potential early action response for the lower two miles of the Creek until the sitewide studies are completed. The Company is one of approximately twenty (20) Potentially Responsible Parties that have received notices, though it is believed other PRPs may exist. The Company vigorously contests the allegations of the Notice and currently does not believe that this matter will have a material effect on the Company’s financial position or results from operations.

On June 25 and 26, 2018, the DTSC conducted a compliance enforcement inspection of ESOL’s facility in Rancho Cordova, California, which was then owned by Stericycle, Inc. On February 14, 2020, the DTSC filed an action in the Superior Court for the State of California, Sacramento Division, alleging violations of California’s Hazardous Waste Control Law and the facility’s hazardous waste permit arising from the inspection. On August 27, 2020 the DTSC issued a Notice of Denial of Hazardous Waste Facility Permit Application, denying the renewal of the facility's hazardous waste permit. On April 8, 2022, the DTSC denied the Company's appeal of the Notice of Denial. The Company has the ability to appeal this decision, and is currently reviewing the decision and its options. The Company has filed a Motion for a Temporary Restraining Order to stop the closure of the site pending its appeal of the DTSC's action. The DTSC investigation and compliance issues leading to the compliance tier assignment were ongoing well before the Company's acquisition of the ESOL business, and the Company was aware of the investigation and many of the issues raised in the investigation at the time of the purchase. Accordingly, the Company is indemnified for certain fines and other costs and expenses associated with this matter by Stericycle, Inc. As a result, the administrative appeal and public hearing process is led by Stericycle, Inc. The Company has not accrued any amounts in respect of these alleged violations and cannot estimate the reasonably possible loss or the range of reasonably possible losses that it may incur.

As previously disclosed, the Company has had ongoing meetings with the SCE over processing salt cakes, a processing byproduct, stored at the Al Hafeerah site. The Company’s Bahrain operations that produced the salt cakes has ceased operations. An Environmental Impact Assessment and Technical Feasibility Study for facilities to process the salt cakes was approved by the SCE during the first quarter of 2018. Commissioning of the facilities was completed during the third quarter of 2021 and the processing of the salt cakes has commenced. The current reserve of $6.9 million continues to represent the Company's best estimate of the ultimate costs to be incurred to resolve this matter. The Company continues to evaluate this reserve and any future change in estimated costs could be material to the Company’s results of operations in any one period.

On July 27, 2018 Brazil’s Federal and Rio de Janeiro State Public Prosecution Offices (MPF and MPE) filed a Civil Public Action against one of the Company's customers (CSN), the Company’s Brazilian subsidiary, the Municipality of Volta Redonda, Brazil, and the Instituto Estadual do Ambiente (local environmental protection agency) seeking the implementation of various measures to limit and reduce the accumulation of customer-owned slag at the site in Brazil. On August 6, 2018 the 3rd Federal Court in Volta Redonda granted the MPF and MPE an injunction against the same parties requiring, among other

15

things, CSN and the Company’s Brazilian subsidiary to limit the volume of slag sent to the site. Because the customer owns the site and the slag located on the site, the Company believes that complying with this injunction is the steel producer’s responsibility.  On March 18, 2019 the Court issued an order fining the Company 5,000 Brazilian reais per day (or approximately $1 thousand per day) and CSN 20,000 Brazilian reais per day (or approximately $4 thousand per day) until the requirements of the injunction are met. On November 1, 2019 the Court issued an additional order increasing the fines assessed to the Company to 25,000 Brazilian reais per day (or approximately $5 thousand per day) and raising the fines assessed to CSN to 100,000 Brazilian reais per day (or approximately $21 thousand per day). The Court also assessed an additional fine of 10,000,000 Brazilian reais (or approximately $2 million) against CSN and the Company jointly. The Company is appealing the fines and the underlying injunction.  Both the Company and CSN continue to have discussions with the Prosecution Offices and governmental authorities on the injunction and the possible resolution of the underlying case. The Company does not believe that a loss relating to this matter is probable or estimable at this point.

On October 19, 2018 local environmental authorities issued an enforcement action against the Company concerning the Company’s operations at a customer site in Ijmuiden, Netherlands. The enforcement action alleged violations of the Company’s environmental permit at the site, which restricts the release of any visible dust emissions. On January 12, 2022, the Administrative Supreme Court upheld the Company’s challenge of these enforcement actions as they relate to the slag tipping area of the site. As a result, all fines asserted against the Company to date have been invalidated and all fines paid to date have been reimbursed. This order is not appealable. On or about October 14, 2021, the Company received a subpoena and two indictments on this matter before the Amsterdam District Court in the Netherlands. The Amsterdam Public Prosecutor’s Office issued the two indictments against the Company, alleging violations in connection with dust releases and/or events alleged to have occurred in 2018 through May 2020 at the site. The action cites provisions which permit fines for the alleged infractions and seeks EURO 100,000 in fines with a smaller amount held in abeyance. On February 25, 2022, the Amsterdam District Court ruled that the Company was liable for only one alleged violation and that this alleged violation was unintentional. The court issued a fine of €5,000, to be held in abeyance. Both the Company and the Public Prosecutor’s Office have appealed this ruling. On February 2, 2022, the prosecutor announced that they would further investigate residents’ claims related to this matter. The Company is vigorously contesting all allegations against it and is also working with its customer to ensure the control of emissions. The Company has contractual indemnity rights from its customer that it believes will substantially cover any fines or penalties.

On March 22, 2022, the U.S. EPA issued a Notice of Intent to File an Administrative Complaint (NOI) alleging violations of the federal Emergency Planning and Community Right-to-Know Act at the Company’s facilities in Tacoma, WA and Kent, WA. The NOI relates exclusively or almost exclusively to the period when Stericycle owned and operated the sites. The NOI proposes a penalty of $3,000,000. The Company is currently reviewing the veracity of the allegations and the corresponding proposed penalty amount. While it is the Company’s position that it has recourse for some or all liabilities, if any, that arise from this matter under the ESOL purchase agreement and representations and warranties insurance policies purchased by the Company, there can be no assurances that the Company’s position will ultimately prevail.

On March 21, 2022, the Company received a draft penalty matrix from the PA DEP concerning alleged reporting, monitoring and related issues at the Company’s Hatfield, PA site prior to the time the Company acquired the site from Stericycle. The draft penalty matrix proposes a penalty of $1,000,000. The Company is currently reviewing the veracity of the allegations. While it is the Company’s position that it has recourse for some or all liabilities, if any, that arise from this matter under the ESOL purchase agreement and representations and warranties insurance policies purchased by the Company, there can be no assurances that the Company’s position will ultimately prevail.

On November 5, 2020, a worker suffered a fatal injury at a site owned by the Company’s customer, Gerdau Ameristeel US, Inc., in Midlothian, TX. Although the Company was not directly involved in the accident, the worker was employed by a sub-contractor of a sub-contractor of the Company. The worker’s family filed suit in the 125th Judicial District Court of Harris County, TX against multiple parties including the Company. The Company is vigorously defending the lawsuit and has insurance coverage subject to a $5 million deductible. Although some loss is probable, it is the Company's position that it has indemnity rights that would offset at least a significant portion of any loss within this deductible; however, there can be no assurances that the Company's position will ultimately prevail.

DEA Investigation

Prior to the Company’s acquisition of ESOL, Stericycle, Inc notified the Company that the DEA had served an administrative subpoena on Stericycle, Inc. and executed a search warrant at a facility in Rancho Cordova, California and an administrative inspection warrant at a facility in Indianapolis, Indiana. The Company has determined that the DEA and the DTSC have launched investigations involving, at least in part, the ESOL business of collecting, transporting, and destroying controlled substances from retail customers that transferred from Stericycle, Inc. to the Company. In connection with these investigations, the DEA also executed a search warrant on an ESOL facility in Austin Texas on July 2, 2020. The Company is cooperating

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with these inquiries, which relate primarily to the period before the Company owned the ESOL business. Since the acquisition of the ESOL business, the Company has performed a vigorous review of ESOL’s compliance program related to controlled substances and has made material changes to the manner in which controlled substances are transported from retail customers to DEA-registered facilities for destruction. The Company has not accrued any amounts in respect of these investigations and cannot estimate the reasonably possible loss or the range of reasonably possible losses that it may incur, if any. Investigations of this type are, by their nature, uncertain and unpredictable. While it is the Company’s position that it has recourse for some or all liabilities, if any, that arise from these matters under the ESOL purchase agreement and representations and warranties insurance policies purchased by the Company, there can be no assurances that the Company’s position will ultimately prevail.

Brazilian Tax Disputes

The Company is involved in a number of tax disputes with federal, state and municipal tax authorities in Brazil. These disputes are at various stages of the legal process, including the administrative review phase and the collection action phase, and include assessments of fixed amounts of principal and penalties, plus interest charges that increase at statutorily determined amounts per month and are assessed on the aggregate amount of the principal and penalties. In addition, the losing party, at the collection action or court of appeals phase, could be subject to a charge to cover statutorily mandated legal fees, which are generally calculated as a percentage of the total assessed amounts due, inclusive of penalty and interest. Many of the claims relate to ICMS, services and social security tax disputes. The largest proportion of the assessed amounts relate to ICMS claims filed by the SPRA, encompassing the period from January 2002 to May 2005.

In October 2009, the Company received notification of the SPRA’s final administrative decision regarding the levying of ICMS in the State of São Paulo in relation to services provided to a customer in the State between January 2004 and May 2005.  As of March 31, 2022 the principal amount of the tax assessment from the SPRA with regard to this case is approximately $1.3 million, with penalty, interest and fees assessed to date increasing such amount by an additional $18.1 million.  On June 4, 2018 the Appellate Court of the State of Sao Paulo ruled in favor of the SPRA but ruled that the assessed penalty should be reduced to approximately $1.3 million. After calculating the interest accrued on the penalty, the Company estimates that this ruling reduces the current overall potential liability for this case to approximately $7.7 million. All such amounts include the effect of foreign currency translation. The Company has appealed the ruling in favor of the SPRA to the Superior Court of Justice. Due to multiple court precedents in the Company’s favor, as well as the Company’s ability to appeal, the Company does not believe a loss is probable.

Another ICMS tax case involving the SPRA refers to the tax period from January 2002 to December 2003. In December 2018 the administrative tribunal hearing the case upheld the Company's liability. The Company has appealed to the judicial phase. The aggregate amount assessed by the tax authorities in August 2005 was $5.3 million (the amounts with regard to this claim are valued as of the date of the assessment since it has not yet reached the collection phase), composed of a principal amount of $1.3 million, with penalty and interest assessed through that date increasing such amount by an additional $4.0 million.  On December 6, 2018 the administrative tribunal reduced the applicable penalties to $0.9 million. After calculating the interest accrued on the current penalty, the Company estimates that the current overall liability for this case to be approximately $5.8 million. All such amounts include the effect of foreign currency translation. Due to multiple court precedents in the Company's favor, the Company does not believe a loss is probable.

The Company continues to believe that sufficient coverage for these claims exists as a result of the indemnification obligations of the Company's customer and such customer’s pledge of assets in connection with the October 2009 notice, as required by Brazilian law.

On December 30, 2020, the Company received an assessment from the municipal authority in Ipatinga, Brazil alleging $2.2 million in unpaid service taxes from the period 2015 to 2020. After calculating the interest and penalties accrued, the Company estimates that the current overall potential liability for this case to be approximately $3.7 million. On January 18, 2021, the Company filed a challenge to the assessment. Due to the multiple defenses that are available, the Company does not believe a loss is probable.

The Company intends to continue its practice of vigorously defending itself against these tax claims under various alternatives, including judicial appeal. The Company will continue to evaluate its potential liability with regard to these claims on a quarterly basis; however, it is not possible to predict the ultimate outcome of these tax-related disputes in Brazil. No loss provision has been recorded in the Company's condensed consolidated financial statements for the disputes described above because the loss contingency is not deemed probable, and the Company does not expect that any costs that are reasonably possible to be incurred by the Company in connection with Brazilian tax disputes would have a material adverse effect on the Company's financial condition, results of operations or cash flows.

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Brazilian Labor Disputes

The Company is subject to ongoing collective bargaining and individual labor claims in Brazil through the Harsco Environmental Segment which allege, among other things, the Company's failure to pay required amounts for overtime and vacation at certain sites. The Company is vigorously defending itself against these claims; however, litigation is inherently unpredictable, particularly in foreign jurisdictions. While the Company does not currently expect that the ultimate resolution of these claims will have a material adverse effect on the Company’s financial condition, results of operations or cash flows, it is not possible to predict the ultimate outcome of these labor-related disputes. As of March 31, 2022 and December 31, 2021 the Company has established reserves of $3.6 million and $3.2 million, respectively, on the Company's Condensed Consolidated Balance Sheets for amounts considered to be probable and estimable.

Other

The Company is named as one of many defendants (approximately 90 or more in most cases) in legal actions in the U.S. alleging personal injury from exposure to airborne asbestos over the past several decades.  In their suits, the plaintiffs have named as defendants, among others, many manufacturers, distributors and installers of numerous types of equipment or products that allegedly contained asbestos.

The Company believes that the claims against it are without merit. The Company has never been a producer, manufacturer or processor of asbestos fibers. Any asbestos-containing part of a Company product used in the past was purchased from a supplier and the asbestos encapsulated in other materials such that airborne exposure, if it occurred, was not harmful and is not associated with the types of injuries alleged in the pending actions.

At March 31, 2022 there were approximately 17,220 pending asbestos personal injury actions filed against the Company.  Of those actions, approximately 16,590 were filed in the New York Supreme Court (New York County), approximately 120 were filed in other New York State Supreme Court Counties and approximately 510 were filed in courts located in other states.

The complaints in most of those actions generally follow a form that contains a standard damages demand of $20 million or $25 million, regardless of the individual plaintiff’s alleged medical condition, and without identifying any specific Company product.

At March 31, 2022 approximately 16,550 of the actions filed in New York Supreme Court (New York County) were on the Deferred/Inactive Docket created by the court in December 2002 for all pending and future asbestos actions filed by persons who cannot demonstrate that they have a malignant condition or discernible physical impairment. The remaining approximately 40 cases in New York County are pending on the Active or In Extremis Docket created for plaintiffs who can demonstrate a malignant condition or physical impairment.

The Company has liability insurance coverage under various primary and excess policies that the Company believes will be available, if necessary, to substantially cover any liability that might ultimately be incurred in the asbestos actions referred to above. The costs and expenses of the asbestos actions are being paid by the Company's insurers.

In view of the persistence of asbestos litigation in the U.S., the Company expects to continue to receive additional claims in the future. The Company intends to continue its practice of vigorously defending these claims and cases. At March 31, 2022 the Company has obtained dismissal in approximately 28,380 cases by stipulation or summary judgment prior to trial.

It is not possible to predict the ultimate outcome of asbestos-related actions in the U.S. due to the unpredictable nature of this litigation, and no loss provision has been recorded in the Company's condensed consolidated financial statements because a loss contingency is not deemed probable or estimable. Despite this uncertainty, and although results of operations and cash flows for a given period could be adversely affected by asbestos-related actions, the Company does not expect that any costs that are reasonably possible to be incurred by the Company in connection with asbestos litigation would have a material adverse effect on the Company's financial condition, results of operations or cash flows.

The Company is subject to various other claims and legal proceedings covering a wide range of matters that arose in the ordinary course of business. In the opinion of management, all such matters are adequately covered by insurance or by established reserves, and, if not so covered, are without merit or are of such kind, or involve such amounts, as would not have a material adverse effect on the financial position, results of operations or cash flows of the Company.

Insurance liabilities are recorded when it is probable that a liability has been incurred for a particular event and the amount of loss associated with the event can be reasonably estimated. Insurance reserves have been estimated based primarily upon actuarial calculations and reflect the undiscounted estimated liabilities for ultimate losses, including claims incurred but not reported. Inherent in these estimates are assumptions that are based on the Company's history of claims and losses, a detailed analysis of existing claims with respect to potential value, and current legal and legislative trends. If actual claims differ from those projected by management, changes (either increases or decreases) to insurance reserves may be required and would be

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recorded through income in the period the change was determined. When a recognized liability has been determined to be covered by third-party insurance, the Company records an insurance claim receivable to reflect the covered liability. Insurance claim receivables are included in Other receivables on the Company's Condensed Consolidated Balance Sheets. See Note 1, Summary of Significant Accounting Policies, to the consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021 for additional information on Accrued insurance and loss reserves.

13.  Reconciliation of Basic and Diluted Shares

	Three Months Ended
	March 31
(In thousands, except per share amounts)	2022		2021
Income (loss) from continuing operations attributable to Harsco Corporation common stockholders	$	(7,333)	$	(1,565)
Weighted-average shares outstanding:
Weighted-average shares outstanding - basic	79,363		79,088
Dilutive effect of stock-based compensation	—		—
Weighted-average shares outstanding - diluted	79,363		79,088
Earnings (loss) from continuing operations per common share, attributable to Harsco Corporation common stockholders:
Basic	$	(0.09)	$	(0.02)
Diluted	$	(0.09)	$	(0.02)

The following average outstanding stock-based compensation units were not included in the computation of diluted earnings per share because the effect was either antidilutive or the market conditions for the performance share units were not met:

	Three Months Ended
	March 31
(In thousands)	2022	2021
Restricted stock units	825	705
Stock appreciation rights	2,653	2,575
Performance share units	1,226	1,013

14.   Derivative Instruments, Hedging Activities and Fair Value

Derivative Instruments and Hedging Activities

The Company uses derivative instruments, including foreign currency exchange forward contracts and interest rate swaps to manage certain foreign currency and interest rate exposures.  Derivative instruments are viewed as risk management tools by the Company and are not used for trading or speculative purposes. All derivative instruments are recorded on the Company's Condensed Consolidated Balance Sheets at fair value.  The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Hedge accounting generally provides for the matching of the timing of gain or loss recognition on the hedging instrument with the recognition of the earnings effect of the hedged forecasted transactions in a cash flow hedge. The Company may enter into derivative contracts that are intended to economically hedge certain of its risks, even though hedge accounting does not apply or the Company elects not to apply hedge accounting.

The Company primarily applies the market approach for recurring fair value measurements and endeavors to utilize the best available information.  Accordingly, the Company utilizes valuation techniques that maximize the use of observable inputs, such as forward rates, interest rates, the Company’s credit risk and counterparties’ credit risks, and which minimize the use of unobservable inputs.  The Company is able to classify fair value balances based on the ability to observe those inputs.  Foreign currency exchange forward contracts and interest rate swaps are based upon pricing models using market-based inputs (Level 2).  Model inputs can be verified and valuation techniques do not involve significant management judgment.

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The fair value of outstanding derivative contracts recorded as assets and liabilities on the Company's Condensed Consolidated Balance Sheets was as follows:

(In thousands)	Balance Sheet Location	Fair Value of Derivatives Designated as Hedging Instruments		Fair Value of Derivatives Not Designated as Hedging Instruments		Total Fair Value
March 31, 2022
Asset derivatives (Level 2):
Foreign currency exchange forward contracts	Other current assets	$	1,038	$	3,235	$	4,273
Total		$	1,038	$	3,235	$	4,273
Liability derivatives (Level 2):
Foreign currency exchange forward contracts	Other current liabilities	$	216	$	1,957	$	2,173
Interest rate swaps	Other current liabilities	2,203		—		2,203
Total		$	2,419	$	1,957	$	4,376
December 31, 2021
Asset derivatives (Level 2):
Foreign currency exchange forward contracts	Other current assets	$	719	$	1,405	$	2,124
Total		$	719	$	1,405	$	2,124
Liability derivatives (Level 2):
Foreign currency exchange forward contracts	Other current liabilities	$	560	$	2,905	$	3,465
Interest rate swaps	Other current liabilities	4,157		—		4,157
Total		$	4,717	$	2,905	$	7,622

All of the Company's derivatives are recorded on the Condensed Consolidated Balance Sheets at gross amounts and not offset. All of the Company's interest rate swaps and certain foreign currency exchange forward contracts are transacted under ISDA documentation. Each ISDA master agreement permits the net settlement of amounts owed in the event of default. The Company's derivative assets and liabilities subject to enforceable master netting arrangements, if offset, would have resulted in a net liability of $0.3 million and $0.9 million at March 31, 2022 and December 31, 2021, respectively.

The effect of derivative instruments on the Company's Condensed Consolidated Statements of Operations and Condensed Consolidated Statements of Comprehensive Income (Loss) was as follows:

Derivatives Designated as Hedging Instruments

	Amount Recognized in OCI on Derivatives				Location of Amount Reclassified from  AOCI into Income	Amount Reclassified from AOCI into Income - Effective Portion or Equity
	Three Months Ended					Three Months Ended
	March 31					March 31
(In thousands)	2022		2021			2022		2021
Foreign currency exchange forward contracts	$	1,009	$	(1)	Income (loss) from discontinued businesses	$	(588)	$	(50)
Interest rate swaps	—		19		Interest expense	1,050		865
	$	1,009	$	18		$	462	$	815

20

The location and amount of gain (loss) recognized on the Company's Condensed Consolidated Statements of Operations was as follows:

	Three Months Ended
	March 31
	2022				2021
(in thousands)	Interest Expense		Income From Discontinued Businesses		Interest Expense		Income From Discontinued Businesses
Total amounts of line items presented in the Condensed Consolidated Statement of Operations in which the effects of derivatives designated as hedging instruments are recorded	$	(15,092)	$	(32,506)	$	(16,256)	$	1,700
Interest rate swaps:
Gain or (loss) reclassified from AOCI into income	(1,050)		—		(865)		—
Amount recognized in earnings due to ineffectiveness	891		—		—		—
Foreign exchange contracts:
Gain or (loss) reclassified from AOCI into income	—		588		—		50
Amount excluded from effectiveness testing recognized in earnings based on changes in fair value	—		(41)		—		28
Amount excluded from the effectiveness testing recognized in earnings based on an amortization approach	—		(2)		—		1

Derivatives Not Designated as Hedging Instruments

	Location of Gain (Loss) Recognized in Income on Derivatives	Amount of Gain (Loss) Recognized in Income on Derivatives (a)
		Three Months Ended
		March 31
(In thousands)		2022		2021
Foreign currency exchange forward contracts	Cost of services and products sold	$	3,838	$	4,744

(a)      These gains (losses) offset amounts recognized in cost of services and products sold principally as a result of intercompany or third party foreign currency         

exposures.

Foreign Currency Exchange Forward Contracts

The Company conducts business in multiple currencies and, accordingly, is subject to the inherent risks associated with foreign exchange rate movements.  Foreign currency-denominated assets and liabilities are translated into U.S. dollars at the exchange rates existing at the respective consolidated balance sheet dates, and income and expense items are translated at the average exchange rates during the respective periods. 

The Company uses derivative instruments to hedge cash flows related to foreign currency fluctuations.  Foreign currency exchange forward contracts outstanding are part of a worldwide program to minimize foreign currency exchange operating income and balance sheet exposure by offsetting foreign currency exposures of certain future payments between the Company and various subsidiaries, suppliers or customers.  The unsecured contracts are with major financial institutions.  The Company may be exposed to credit loss in the event of non-performance by the contract counterparties.  The Company evaluates the creditworthiness of the counterparties and does not expect default by them.  Foreign currency exchange forward contracts are used to hedge commitments, such as foreign currency debt, firm purchase commitments and foreign currency cash flows for certain export sales transactions.

Changes in the fair value of derivatives used to hedge foreign currency denominated balance sheet items are reported directly in earnings, along with offsetting transaction gains and losses on the items being hedged.  Derivatives used to hedge forecasted cash flows associated with foreign currency commitments may be accounted for as cash flow hedges, as deemed appropriate, if the criteria for hedge accounting are met.  Gains and losses on derivatives designated as cash flow hedges are deferred in AOCI, a separate component of equity, and reclassified to earnings in a manner that matches the timing of the earnings impact of the hedged transactions.  The ineffective portion of all hedges, if any, is recognized currently in earnings.

The recognized gains and losses offset amounts recognized in cost of services and products sold principally as a result of intercompany or third-party foreign currency exposures. At March 31, 2022 and December 31, 2021 the notional amounts of

21

foreign currency exchange forward contracts were $404.0 million and $425.8 million, respectively. These contracts are primarily denominated in British Pound Sterling and Euros and mature through March 2023.

In addition to foreign currency exchange forward contracts, the Company designates certain loans as hedges of net investments in international subsidiaries.  The Company recorded pre-tax net losses of $0.6 million for the three months ended March 31, 2022, and pre-tax net gains of $3.3 million for the three months ended March 31, 2021 in AOCI.

Interest Rate Swaps

The Company uses interest rate swaps in conjunction with certain variable rate debt issuances in order to secure a fixed interest rate.  Changes in the fair value attributed to the effect of the swaps’ interest spread and changes in the credit worthiness of the counter-parties are recorded in AOCI. 

At March 31, 2022, the Company has entered into a series of interest rate swaps that are in effect through 2022 and have the effect of converting $200.0 million of the Term Loan Facility from floating-rate to fixed-rate.  The fixed rates provided by the swaps replace the adjusted LIBOR rate in the interest calculation to 3.12% for 2022. In the fourth quarter of 2021, the interest rate swaps were deemed ineffective and thus the subsequent changes in fair value were recorded in earnings in the current period.

Fair Value of Other Financial Instruments

The carrying amounts of cash and cash equivalents, accounts receivable, accounts payable, accrued liabilities and short-term borrowings approximate fair value due to the short-term maturities of these assets and liabilities.  At March 31, 2022 and December 31, 2021 the total fair value of long-term debt (excluding deferred financing costs), including current maturities, was $1,423.7 million and $1,394.2 million, respectively, compared with a carrying value of $1,457.3 million and $1,387.9 million, respectively.  Fair values for debt are based on pricing models using market-based inputs (Level 2) for similar issues or on the current rates offered to the Company for debt of the same remaining maturities.

15. Review of Operations by Segment 

	Three Months Ended
	March 31
(In thousands)	2022		2021
Revenues From Continuing Operations
Harsco Environmental	$	262,051	$	257,986
Harsco Clean Earth	190,746		189,279
Total Revenues From Continuing Operations	$	452,797	$	447,265
Operating Income (Loss) From Continuing Operations
Harsco Environmental	$	18,267	$	25,935
Harsco Clean Earth	(1,297)		3,178
Corporate	(9,222)		(9,995)
Total Operating Income From Continuing Operations	$	7,748	$	19,118
Depreciation
Harsco Environmental	$	28,072	$	25,717
Harsco Clean Earth	5,101		5,337
Corporate	431		483
Total Depreciation	$	33,604	$	31,537
Amortization
Harsco Environmental	$	1,828	$	2,048
Harsco Clean Earth	6,075		6,083
Corporate (a)	683		751
Total Amortization	$	8,586	$	8,882
Capital Expenditures
Harsco Environmental	$	24,790	$	24,419
Harsco Clean Earth	6,696		2,530
Corporate	966		68
Total Capital Expenditures	$	32,452	$	27,017

(a)     Amortization expense on Corporate relates to the amortization of deferred financing costs.

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Reconciliation of Segment Operating Income to Income (Loss) From Continuing Operations Before Income Taxes and Equity Income

	Three Months Ended
	March 31
(In thousands)	2022		2021
Segment operating income	$	16,970	$	29,113
General Corporate expense	(9,222)		(9,995)
Operating income from continuing operations	7,748		19,118
Interest income	644		547
Interest expense	(15,092)		(16,256)
Unused debt commitment fees, amendment fees and loss on extinguishment of debt	(532)		(5,258)
Defined benefit pension income	2,410		3,934
Income (loss) from continuing operations before income taxes and equity income	$	(4,822)	$	2,085

16. Revenue Recognition

The Company recognizes revenues to depict the transfer of promised services and products to customers in an amount that reflects the consideration the Company expects to receive in exchange for those services or products. Service revenues include the Harsco Clean Earth Segment revenue and the service components of the Harsco Environmental Segment. Product revenues include portions of the Harsco Environmental Segment.

A summary of the Company's revenues by primary geographical markets as well as by key product and service groups is as follows:

	Three Months Ended
	March 31, 2022
(In thousands)	Harsco Environmental Segment		Harsco Clean Earth Segment		Consolidated Totals
Primary Geographical Markets (a):
North America	$	71,079	$	190,746	$	261,825
Western Europe	102,079		—		102,079
Latin America (b)	35,805		—		35,805
Asia-Pacific	28,068		—		28,068
Middle East and Africa	19,886		—		19,886
Eastern Europe	5,134		—		5,134
Total Revenues	$	262,051	$	190,746	$	452,797
Key Product and Service Groups:
Environmental services related to resource recovery for metals manufacturing and related logistical services	$	227,689	$	—	$	227,689
Ecoproducts	31,965		—		31,965
Environmental systems for aluminum dross and scrap processing	2,397		—		2,397
Waste processing, recycling, reuse and transportation solutions	—		190,746		190,746
Total Revenues	$	262,051	$	190,746	$	452,797

	Three Months Ended
	March 31, 2021
(In thousands)	Harsco Environmental Segment		Harsco Clean Earth Segment		Consolidated Totals
Primary Geographical Markets (a):
North America	$	67,181	$	189,279	$	256,460
Western Europe	112,171		—		112,171
Latin America (b)	30,653		—		30,653
Asia-Pacific	23,370		—		23,370
Middle East and Africa	20,121		—		20,121

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	Three Months Ended
	March 31, 2021
(In thousands)	Harsco Environmental Segment		Harsco Clean Earth Segment		Consolidated Totals
Eastern Europe	4,490		—		4,490
Total Revenues	$	257,986	$	189,279	$	447,265
Key Product and Service Groups:
Environmental services related to resource recovery for metals manufacturing and related logistical services	$	225,060	$	—	$	225,060
Ecoproducts	29,785		—		29,785
Environmental systems for aluminum dross and scrap processing	3,141		—		3,141
Waste processing, recycling, reuse and transportation solutions	—		189,279		189,279
Total Revenues	$	257,986	$	189,279	$	447,265

(a)     Revenues are attributed to individual countries based on the location of the facility generating the revenue.

(b)     Includes Mexico.

The Company may receive payments in advance of earning revenue (advances on contracts), which is included in Other current liabilities and Other liabilities on the Condensed Consolidated Balance Sheets. The Company may recognize revenue in advance of being able to contractually invoice the customer (contract assets), which is included in Other current assets on the Condensed Consolidated Balance Sheets. Contract assets are transferred to Trade accounts receivable, net, when the right to payment becomes unconditional. Contract assets and advances on contracts are reported as a net position, on a contract-by-contract basis, at the end of each reporting period.

The Company had contract assets totaling $3.7 million and $3.1 million at March 31, 2022 and December 31, 2021, respectively. The increase is due principally to additional contract assets recognized in excess of the transfer of contract assets to accounts receivable. The Company had advances on contracts totaling $4.0 million and $4.1 million at March 31, 2022 and December 31, 2021, respectively. During the three months ended March 31, 2022, the Company recognized approximately $3 million of revenue related to amounts previously included in advances on contracts. During the three months ended March 31, 2021, the Company recognized approximately $2 million of revenue related to amounts previously included in advances on contracts.

At March 31, 2022 the Harsco Environmental Segment had remaining, fixed, unsatisfied performance obligations where the expected contract duration exceeds one year totaling $78.7 million. Of this amount, $20.6 million is expected to be fulfilled by March 31, 2023, $19.5 million by March 31, 2024, $18.7 million by March 31, 2025, $13.1 million by March 31, 2026 and the remainder thereafter. These amounts exclude any variable fees, fixed fees subject to indexation and any performance obligations expected to be satisfied within one year.

17.   Other (Income) Expenses, Net

The major components of this Condensed Consolidated Statements of Operations caption were as follows:

	Three Months Ended
	March 31
(In thousands)	2022		2021
Employee termination benefit costs	$	(308)	$	510
Other costs to exit activities	581		238
Impaired asset write-downs	59		22
Net gains	(1,812)		(1,693)
Other	301		(68)
Other (income) expenses, net	$	(1,179)	$	(991)

18. Components of Accumulated Other Comprehensive Loss

AOCI is included on the Condensed Consolidated Statements of Stockholders' Equity. The components of AOCI, net of the effect of income taxes, and activity for the three months ended March 31, 2021 and 2022 was as follows:

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	Components of AOCI, Net of Tax
(In thousands)	Cumulative Foreign Exchange Translation Adjustments			Effective Portion of Derivatives Designated as Hedging Instruments			Cumulative Unrecognized Actuarial Losses on Pension Obligations			Unrealized Gain (Loss) on Marketable Securities		Total
Balance at December 31, 2020	$	(125,392)		$	(5,840)		$	(514,500)		$	(9)	$	(645,741)
OCI before reclassifications	(3,296)		(a)	119		(b)	(1,897)		(a)	17		(5,057)
Amounts reclassified from AOCI, net of tax	—			570			5,716			—		6,286
Total OCI	(3,296)			689			3,819			17		1,229
OCI attributable to noncontrolling interests	1,066			—			—			—		1,066
OCI attributable to Harsco Corporation	(2,230)			689			3,819			17		2,295
Balance at March 31, 2021	$	(127,622)		$	(5,151)		$	(510,681)		$	8	$	(643,446)

	Components of AOCI, Net of Tax
(In thousands)	Cumulative Foreign Exchange Translation Adjustments			Effective Portion of Derivatives Designated as Hedging Instruments			Cumulative Unrecognized Actuarial Losses on Pension Obligations			Unrealized Gain (Loss) on Marketable Securities		Total
Balance at December 31, 2021	$	(134,889)		$	(3,024)		$	(422,248)		$	22	$	(560,139)
OCI before reclassifications	(2,847)		(a)	802		(b)	9,184		(a)	(3)		7,136
Amounts reclassified from AOCI, net of tax				338			4,534					4,872
Total OCI	(2,847)			1,140			13,718			(3)		12,008
OCI attributable to noncontrolling interests	482											482
OCI attributable to Harsco Corporation	(2,365)			1,140			13,718			(3)		12,490
Balance at March 31, 2022	$	(137,254)		$	(1,884)		$	(408,530)		$	19	$	(547,649)

(a)    Principally foreign currency fluctuation.

(b)     Net change from periodic revaluations.

Amounts reclassified from AOCI were as follows:

(In thousands)	Three Months Ended				Location on the Condensed Consolidated Statements of Operations
	March 31
	2022		2021
Amortization of cash flow hedging instruments:
Foreign currency exchange forward contracts	$	(588)	$	(50)	Discontinued Operations
Interest rate swaps	1,050		865		Interest expense
Total before taxes	462		815
Income taxes	(124)		(245)
Total reclassification of cash flow hedging instruments, net of tax	$	338	$	570
Amortization of defined benefit pension items (c):
Actuarial losses	$	4,727	$	5,948	Defined benefit pension income
Prior service costs	120		127		Defined benefit pension income
Total before taxes	4,847		6,075
Income taxes	(313)		(359)
Total reclassification of defined benefit pension items, net of tax	$	4,534	$	5,716

(c)    These AOCI components are included in the computation of net periodic pension costs. See Note 10, Employee Benefit Plans, for additional details.

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ITEM 2.                 MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion should be read in conjunction with the accompanying unaudited condensed consolidated financial statements as well as the audited consolidated financial statements of the Company, including the notes thereto, included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021 which includes additional information about the Company’s critical accounting policies, contractual obligations, practices and the transactions that support the financial results, and provides a more comprehensive summary of the Company’s outlook, trends and strategies for 2022 and beyond.

Certain amounts included in Item 2 of this Quarterly Report on Form 10-Q are rounded in millions and all percentages are calculated based on actual amounts.  As a result, minor differences may exist due to rounding.

Forward-Looking Statements

The nature of the Company's business, together with the number of countries in which it operates, subject it to changing economic, competitive, regulatory and technological conditions, risks and uncertainties. In accordance with the "safe harbor" provisions of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, the Company provides the following cautionary remarks regarding important factors that, among others, could cause future results to differ materially from the results contemplated by forward-looking statements, including the expectations and assumptions expressed or implied herein. Forward-looking statements contained herein could include, among other things, statements about management's confidence in and strategies for performance; expectations for new and existing products, technologies and opportunities and expectations regarding growth, sales, cash flows, and earnings. Forward-looking statements can be identified by the use of such terms as "may," "could," "expect," "anticipate," "intend," "believe," "likely," "estimate," "outlook," "plan" or other comparable terms.

Factors that could cause actual results to differ, perhaps materially, from those implied by forward-looking statements include, but are not limited to: (1) changes in the worldwide business environment in which the Company operates, including changes in general economic conditions or changes due to COVID-19 and governmental and market reactions to COVID-19; (2) changes in currency exchange rates, interest rates, commodity and fuel costs and capital costs; (3) changes in the performance of equity and bond markets that could affect, among other things, the valuation of the assets in the Company's pension plans and the accounting for pension assets, liabilities and expenses; (4) changes in governmental laws and regulations, including environmental, occupational health and safety, tax and import tariff standards and amounts; (5) market and competitive changes, including pricing pressures, market demand and acceptance for new products, services and technologies; (6) the Company's inability or failure to protect its intellectual property rights from infringement in one or more of the many countries in which the Company operates; (7) failure to effectively prevent, detect or recover from breaches in the Company's cybersecurity infrastructure; (8) unforeseen business disruptions in one or more of the many countries in which the Company operates due to political instability, civil disobedience, armed hostilities, public health issues or other calamities; (9) disruptions associated with labor disputes and increased operating costs associated with union organization; (10) the seasonal nature of the Company's business; (11) the Company's ability to successfully enter into new contracts and complete new acquisitions or strategic ventures in the time-frame contemplated, or at all; (12) the Company's ability to negotiate, complete, and integrate strategic transactions; (13) failure to conduct and complete a satisfactory process for the divestiture of the Rail division, as announced on November 2, 2021; (14) potential severe volatility in the capital or commodity markets; (15) failure to retain key management and employees; (16) the outcome of any disputes with customers, contractors and subcontractors; (17) the financial condition of the Company's customers, including the ability of customers (especially those that may be highly leveraged, have inadequate liquidity or whose business is significantly impacted by COVID-19) to maintain their credit availability; (18) implementation of environmental remediation matters; (19) risk and uncertainty associated with intangible assets and (20) other risk factors listed from time to time in the Company's SEC reports. A further discussion of these, along with other potential risk factors, can be found in Part II, Item 1A, "Risk Factors," below, as well as Part I, Item 1A, "Risk Factors," of the Company's Annual Report on Form 10-K for the year ended December 31, 2021. The Company cautions that these factors may not be exhaustive and that many of these factors are beyond the Company's ability to control or predict. Accordingly, forward-looking statements should not be relied upon as a prediction of actual results. The Company undertakes no duty to update forward-looking statements except as may be required by law.

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Executive Overview

The Company is a market-leading, global provider of environmental solutions for industrial, retail and medical waste streams. The Company's operations consist of two reportable segments: Harsco Environmental and Harsco Clean Earth. The Harsco Environmental Segment operates primarily under long-term contracts, providing critical environmental services and material processing to the global steel and metals industries, including zero waste solutions for manufacturing byproducts within the metals industry. The Harsco Clean Earth Segment provides waste management services including transportation, specialty waste processing, recycling and beneficial reuse solutions for hazardous waste and soil and dredged materials. The Company has locations in approximately 30 countries, including the U.S. The Company was incorporated in 1956.

The Company maintains a positive outlook across all businesses supported by favorable underlying growth characteristics in its businesses and investments by the Company to further supplement growth. Please refer to Part I, Item 1A, "Risk Factors" in the Company's Annual Report on Form 10-K for the year ended December 31, 2021 for additional information related to the potential impacts of COVID-19 on the Company.

The Company expects growth in both of our reporting segments for 2022:

•Harsco Environmental results are expected to increase in 2022 due to higher environmental services demand supported by higher steel production and growth in ecoproducts. The global steel market is in the process of rebalancing because of the Russia-Ukraine conflict, however the impacts on the Company are currently anticipated to be limited. Over the longer-term the Company expects that the Harsco Environmental Segment's growth will be driven by economic growth that supports higher global steel consumption as well as investments and innovation that support the environmental solutions needs of customers.

•Although the Harsco Clean Earth Segment expects organic growth within its hazardous waste processing business as well as the continuous improvement benefits and integration efforts in 2022; these will be partially offset by the current challenges related to labor availability and higher costs including transportation and containers. Beyond 2022, the Company expects this segment to benefit from positive underlying market trends, further growth opportunities and operational synergy opportunities as well as from the less cyclical and recurring nature of this business. These dynamics are expected to provide favorable returns on the Company's investments over time.

Results of Operations

Segment Results

	Three Months Ended
	March 31
(In millions, except percentages)	2022			2021
Revenues:
Harsco Environmental	$	262.1		$	258.0
Harsco Clean Earth	190.7			189.3
Total Revenues	$	452.8		$	447.3
Operating Income (Loss):
Harsco Environmental	$	18.3		$	25.9
Harsco Clean Earth	(1.3)			3.2
Corporate	(9.2)			(10.0)
Total Operating Income	$	7.7		$	19.1
Operating Margins:
Harsco Environmental	7.0		%	10.1		%
Harsco Clean Earth	(0.7)		%	1.7		%
Consolidated Operating Margin	1.7		%	4.3		%

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Harsco Environmental Segment:

	March 31, 2022
Significant Effects on Revenues (In millions)	Three Months Ended
Revenues — 2021	$	258.0
Net effects of price/volume changes, primarily attributable to volume changes	18.7
Impact of foreign currency translation	(7.1)
Net impact of new and lost contracts	(6.8)
Other	(0.7)
Revenues — 2022	$	262.1

The following factors contributed to the changes in operating income during the three months ended March 31, 2022.

Factors Positively Affecting Operating Income:

•Operating income was positively affected by improved net overall services volumes for customers under environmental services contracts for the first quarter ended March 31, 2022.

•Improved profitability at certain commodity-price linked sites due to higher nickel and scrap prices compared to prior year.

Factors Negatively Impacting Operating Income:

•Impact of cost increases relating to raw materials, labor, equipment rental, maintenance and fuel due to inflation.

•Less favorable mix of services.

•Lower recovery of Brazil sales and use tax expense of $1.0 million in the first quarter ended March 31, 2022 as compared to the first quarter ended March 31, 2021.

•Foreign currency translation did not significantly impact operating income in the first quarter ended March 31, 2022.

Harsco Clean Earth Segment:

	March 31, 2022
Significant Effects on Revenues (In millions)	Three Months Ended
Revenues—2021	$	189.3
Net effects of price/volume changes	1.5
Other	(0.1)
Revenues—2022	$	190.7

The following factors contributed to the changes in operating income (loss) during the three months ended March 31, 2022.

Factors Positively Affecting Operating Income:

•Favorable pricing and volume for the hazardous waste business during the three months ended March 31, 2022.

Factors Negatively Impacting Operating Income:

•Impact of cost inflation, principally transportation and container costs.

•Material processing constraints due to driver shortages and end-disposal availability.

•Impact of moderately lower soil and dredged material volume and unfavorable mix.

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Consolidated Results

	March 31
		Three Months Ended
(In millions, except per share amounts)		2022			2021
Total revenues		$	452.8		$	447.3
Cost of services and products sold		377.0			357.4
Selling, general and administrative expenses		69.2			71.6
Research and development expenses		0.1			0.2
Other (income) expenses, net		(1.2)			(1.0)
Operating income from continuing operations		7.7			19.1
Interest income		0.6			0.5
Interest expense		(15.1)			(16.3)
Unused debt commitment fees, amendment fees and loss on extinguishment of debt		(0.5)			(5.3)
Defined benefit pension income		2.4			3.9
Income tax benefit (expense) from continuing operations		(1.2)			(2.1)
Equity income (loss) of unconsolidated entities, net		(0.1)			(0.1)
Income (loss) from continuing operations		(6.2)			(0.1)
Income (loss) from discontinued businesses		(39.1)			3.4
Income tax benefit (expense) related to discontinued operations		6.6			(1.7)
Income (loss) from discontinued operations, net of tax		(32.5)			1.7
Net income (loss)		(38.7)			1.6
Total other comprehensive income (loss)		12.0			1.2
Total comprehensive income (loss)		(26.7)			2.8
Diluted earnings (loss) per common share from continuing operations attributable to Harsco Corporation common stockholders		(0.09)			(0.02)
Effective income tax rate for continuing operations		(25.3)		%	100.8		%

Comparative Analysis of Consolidated Results

Revenues

Revenues for the first quarter of 2022 increased $5.5 million or 1.2% from the first quarter of 2021. Foreign currency translation decreased revenues by $7.1 million for the first quarter ended March 31, 2022, compared with the same period in the prior year. Refer to the discussion of segment results above for information pertaining to factors positively affecting and negatively impacting revenues.

Cost of Services and Products Sold

Cost of services and products sold for the first quarter of 2022 increased $19.7 million or 5.5% from the first quarter of 2021. The changes in cost of services and products sold were attributable to the following significant items:

	March 31, 2022
(In millions)	Three Months Ended
Change in costs due to changes in revenues volume	$	9.0
Change in revenue mix and changes in prices, including materials, labor, fuel, transportation and maintenance	14.0
Impact of foreign currency translation	(6.5)
Other	3.2
Total change in cost of services and products sold — 2022 vs. 2021	$	19.7

Selling, General and Administrative Expenses

Selling, general and administrative expenses for the first quarter of 2022 decreased $2.5 million or 3.4% from the first quarter of 2021. The decrease for the first quarter of 2022 is due principally to cost management initiatives in the Clean Earth Segment

29

and Corporate.

Other (Income) Expenses, Net

The major components of this Condensed Consolidated Statements of Operations caption are as follows:

	Three Months Ended
	March 31
(In thousands)	2022		2021
Employee termination benefit costs	$	(308)	$	510
Other costs to exit activities	581		238
Impaired asset write-downs	59		22
Net gains	(1,812)		(1,693)
Other	301		(68)
Other (income) expenses, net	$	(1,179)	$	(991)

Interest Expense

Interest expense during the first quarter of 2022 decreased by $1.2 million compared with the first quarter of 2021. The decrease in the first quarter of 2022 primarily relates to lower weighted average interest rates offset by higher outstanding borrowings.

Unused Debt Commitment Fees, Amendment Fees and Loss on Extinguishment of Debt

During the first quarter 2022 the Company recognized $0.5 million of fees and other costs primarily related to the amended Senior Secured Credit Facilities.

During the first quarter of 2021, the Company recognized $5.3 million of fees and other costs primarily related to the amended Senior Secured Credit Facilities.

Defined Benefit Pension Income

Defined benefit pension income for the first quarter of 2022 was $2.4 million, compared with defined benefit pension income of $3.9 million for the first quarter of 2021. The decrease is primarily the result of a lower assumed rate of return on plan assets at December 31, 2021.

Income Tax Expense

Income tax expense from continuing operations for the first three months of 2022 and 2021 was $1.2 million and $2.1 million, respectively. Income tax expense decreased in 2022 as a result of lower taxable income, primarily due to change in geographic mix of income. The $1.2 million income tax expense on the $4.8 million pre-tax losses for the three months ended March 31, 2022 is due to pretax losses in various foreign jurisdictions where no tax benefit is recorded.

Income (Loss) from Continuing Operations

Loss from continuing operations was $(6.2) million for the first quarter of 2022, compared with Loss from continuing operations of $(0.1) million for the first quarter of 2021. The primary drivers for these increases are noted above.

Income (Loss) from Discontinued Operations

The operating results of the former Harsco Rail Segment and costs directly attributable to the sale of the business, have been reflected as discontinued operations in the Company's Condensed Consolidated Statement of Operations for all periods presented. In addition, this caption includes costs directly attributable to retained contingent liabilities of other previously disposed businesses. The primary driver for the loss in the first quarter of 2022 is the recognition of additional forward estimated loss provisions of $35.1 million for certain contracts in the Rail business. It is possible that the Company's overall estimate of liquidated damages, penalties and costs to complete these contracts may increase, which would result in an additional estimated forward loss provision at such time. See Note 3, Dispositions, in Part I, Item 1, Financial Statements.

Total Other Comprehensive Income (Loss)

Total other comprehensive income was $12.0 million in the first quarter of 2022, respectively, compared with Total other comprehensive income of $1.2 million in the first quarter of 2021. The primary driver of this change is the fluctuation of the U.S. dollar against certain currencies inclusive of the impact of foreign currency translation of cumulative unrecognized actuarial losses on the Company’s pension obligations.

30

Liquidity and Capital Resources

Cash Flow Summary

The Company currently expects to have sufficient financial liquidity and borrowing capacity to support the strategies within each of its businesses. The Company currently expects operational and business needs to be met by cash provided by operations supplemented with borrowings from time to time, principally under the Senior Secured Credit Facilities. The Company supplements the cash provided by operations with borrowings from time to time due to historical patterns of seasonal cash flow and the funding of various projects. The Company regularly assesses capital needs in the context of operational trends and strategic initiatives.

The Company’s cash flows from operating, investing and financing activities, as reflected on the Condensed Consolidated Statements of Cash Flows, are summarized in the following table:

	Three Months Ended
	March 31
(In millions)	2022		2021
Net cash provided (used) by:
Operating activities	$	(34.3)	$	(23.2)
Investing activities	(26.9)		(25.0)
Financing activities	63.2		51.5
Effect of exchange rate changes on cash and cash equivalents, including restricted cash	0.5		(0.7)
Net change in cash and cash equivalents, including restricted cash	$	2.4	$	2.7

Net cash used by operating activities — Net cash used by operating activities in the first three months of 2022 was $34.3 million, a decrease in cash flows of $11.1 million from the first three months of 2021.  The primary driver for this decrease was lower cash net income partially offset by a favorable change in working capital. The primary drivers of the favorable change in working capital included a decrease in contract assets in the Rail business and the timing of accounts payable in all segments, including the Rail business and Corporate.

Net cash used by investing activities — Net cash used by investing activities in the first three months of 2022 was $26.9 million, a decrease in cash flows of $1.9 million from the cash used in the first three months of 2021.  The decrease reflects an increase in capital expenditures partially offset by an increase in the proceeds from sales of assets and more favorable settlements for hedging transactions.

Net cash provided by financing activities — Net cash provided by financing activities in the first three months of 2022 was $63.2 million, an increase of $11.7 million from the first three months of 2021.  The increase was primarily due to higher net cash borrowings of $10.6 million in the first three months of 2022 resulting primarily from the decrease in cash flows from operating activities.

Sources and Uses of Cash

The Company’s principal sources of liquidity are cash provided by operations on an annual basis and borrowings under the Senior Secured Credit Facilities, augmented by cash proceeds from asset sales. In addition, the Company has other bank credit facilities available throughout the world.  The Company expects to continue to utilize all of these sources to meet future cash requirements for operations and growth initiatives.

Summary of Senior Secured Credit Facilities and Notes: (In millions)	March 31 2022		December 31 2021
By type:
New Term Loan	$	496.3	$	497.5
Revolving Credit Facility	434.0		362.0
5.75% Notes	500.0		500.0
Total	$	1,430.3	$	1,359.5
By classification:
Current	$	5.0	$	5.0
Long-term	1,425.3		1,354.5
Total	$	1,430.3	$	1,359.5

31

	March 31, 2022
(In millions)	Facility Limit		Outstanding Balance		Outstanding Letters of Credit		Available Credit
Revolving credit facility (a U.S.-based program)	$	700.0	$	434.0	$	29.8	$	236.2

Debt Covenants

The Senior Secured Credit Facilities contain a consolidated net debt to consolidated adjusted EBITDA ratio covenant, which is not to exceed 5.75 for the quarter ending March 31, 2022 and then decreasing quarterly until reaching 4.00 on December 31, 2023, and a minimum consolidated adjusted EBITDA to consolidated interest charges ratio covenant, which is not to be less than 3.0.  At March 31, 2022 the Company was in compliance with these covenants, as the total net debt to adjusted EBITDA ratio (as defined in the Credit Agreement) was 5.1 and total interest coverage ratio was 4.2. Based on balances and covenants in effect at March 31, 2022 the Company could increase net debt by $172.9 million and remain in compliance with these debt covenants. Alternatively, adjusted EBITDA could decrease by $30.1 million, and the Company would remain in compliance with these covenants. The Company believes it will continue to maintain compliance with these covenants based on its current outlook.  However, the Company’s estimates of compliance with these covenants could change in the future with a deterioration in economic conditions.

Cash Management

The Company has various cash management systems throughout the world that centralize cash in various bank accounts where it is economically justifiable and legally permissible to do so. These centralized cash balances are then redeployed to other operations to reduce short-term borrowings and to finance working capital needs or capital expenditures. Due to the transitory nature of cash balances, they are normally invested in bank deposits that can be withdrawn at will or in very liquid short-term bank time deposits and government obligations. The Company's policy is to use the largest banks in the various countries in which the Company operates. The Company monitors the creditworthiness of banks and, when appropriate, will adjust banking operations to reduce or eliminate exposure to less creditworthy banks.

At March 31, 2022 the Company's consolidated cash and cash equivalents included $83.4 million held by non-U.S. subsidiaries. At March 31, 2022 approximately 5% of the Company's consolidated cash and cash equivalents had regulatory restrictions that would preclude the transfer of funds with and among subsidiaries. Non-U.S. subsidiaries also held $28.0 million of cash and cash equivalents in consolidated strategic ventures. The strategic venture agreements may require strategic venture partner approval to transfer funds with and among subsidiaries. While the Company's remaining non-U.S. cash and cash equivalents can be transferred with and among subsidiaries, the majority of these non-U.S. cash balances will be used to support the ongoing working capital needs and continued growth of the Company's non-U.S. operations.

Recently Adopted and Recently Issued Accounting Standards

Information on recently adopted and recently issued accounting standards is included in Note 2, Recently Adopted and Recently Issued Accounting Standards, in Part I, Item 1, Financial Statements.

ITEM 3.     QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Market risks have not changed significantly from those disclosed in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2021.

ITEM 4.        CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

As of March 31, 2022, an evaluation was performed, under the supervision and with the participation of the Company’s management, including the Company's Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of the Company’s disclosure controls and procedures pursuant to Rule 13a – 15 under the Securities and Exchange Act of 1934, as amended. Based upon that evaluation, such officers concluded that the Company's disclosure controls and procedures are effective to ensure that information required to be disclosed by the Company in the reports it files or submits under the Securities and Exchange Act of 1934, as amended (1) is recorded, processed, summarized, and reported within the time periods specified in the Securities and Exchange Commission's rules and forms and (2) is accumulated and communicated to the Company's management, including the Chief Executive Officer and Chief Financial Officer, as appropriate, to allow for timely decisions regarding required disclosure.

32

Changes in Internal Control Over Financial Reporting

There were no changes in the Company's internal control over financial reporting during the Company's most recent fiscal quarter that have materially affected, or are reasonably likely to materially affect, the Company's internal control over financial reporting.

PART II — OTHER INFORMATION 

ITEM 1.        LEGAL PROCEEDINGS

Information on legal proceedings is included in Note 12, Commitments and Contingencies, in Part I, Item 1, Financial Statements.

ITEM 1A.     RISK FACTORS

The Company's risk factors as of March 31, 2022 have not changed materially from those described in Part 1, Item 1A, "Risk Factors" of the Company's Annual Report on Form 10-K for the year ended December 31, 2021.

ITEM 2.        UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

None.

33

ITEM 6.        EXHIBITS

The following exhibits are included as part of this report by reference:

Exhibit Number	Description
10.1	Form of RSU Award Agreement (for awards granted on or after March 1, 2022)
10.2	Form of PSU Award Agreement (for awards granted on or after March 1, 2022)
10.3	Form of SAR Award Agreement (for awards granted on or after March 1, 2022)
10.4	Amendment No. 9 to Third Amended and Restated Credit Agreement dated February 22, 2022, among Harsco Corporation, the subsidiaries of the Company party there to, Citibank, N.A., as administrator agent and collateral agent, and the lenders party there to (incorporated by reference to Exhibit 10(a)(xv) to the Company's Annual Report of Form 10-K for the year ended December 31, 2021. Commission file Number 001-03970).
31.1	Certification Pursuant to Rule 13a-14(a) or 15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (Chairman, President and Chief Executive Officer).
31.2	Certification Pursuant to Rule 13a-14(a) or 15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (Chief Financial Officer).
32	Certifications Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Chairman, President and Chief Executive Officer and Chief Financial Officer).
101.Def	Definition Linkbase Document
101.Pre	Presentation Linkbase Document
101.Lab	Labels Linkbase Document
101.Cal	Calculation Linkbase Document
101.Sch	Schema Document
101.Ins	Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.

34

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

HARSCO CORPORATION

(Registrant)

DATE	May 3, 2022	/s/ ANSHOOMAN AGA
		Anshooman Aga
		Senior Vice President and Chief Financial Officer
		(On behalf of the registrant and as Principal Financial Officer)
DATE	May 3, 2022	/s/ SAMUEL C. FENICE
		Samuel C. Fenice
		Vice President and Corporate Controller
		(Principal Accounting Officer)

35

EX-10.1

Exhibit 10.1

HARSCO CORPORATION

RESTRICTED STOCK UNITS AGREEMENT (FORM)

This RESTRICTED STOCK UNITS AGREEMENT (this "Agreement") is made as of March 4, 2022, by and between Harsco Corporation, a Delaware corporation, and [Participant Name:First Name Last Name](the "Grantee").

1.Certain Definitions. Capitalized terms used, but not otherwise defined, in this Agreement will have the meanings given to such terms in the Company's 2013 Equity and Incentive Compensation Plan, as amended by Amendment No. 1 to the 2013 Equity and Incentive Compensation Plan (the "Plan").

2.Grant of RSUs. Subject to and upon the terms, conditions and restrictions set forth in this Agreement, including, without limitation, Exhibit Aattached hereto (the "Non-Competition Agreement"), any additional terms and conditions for the Grantee's country (Grantees outside the United States only) set forth in the attached Exhibit B which forms part of this Agreement, and in the Plan the Company grants to the Grantee, as of March 4, 2022 (the "Date of Grant"),[Granted:Shares Granted]Restricted Stock Units ("RSUs"). Each RSU shall represent the right of the Grantee to receive one share of Common Stock subject to and upon the terms and conditions of this Agreement. Notwithstanding anything in this Section 2 or otherwise in this Agreement to the contrary, the Grantee acknowledges and agrees to be bound by the restrictive covenant terms, conditions and provisions in the Non-Competition Agreement as a "Grantee" as referred to therein.

3.Restrictions on Transfer of RSUs. Subject to Section 15of the Plan, neither the RSUs granted hereby nor any interest therein or in the Common Stock related thereto shall be transferable prior to payment to the Grantee pursuant to Section 5hereof other than by will or pursuant to the laws of descent and distribution.

4.Vesting of RSUs. Subject to the terms and conditions of this Agreement and the Plan, the RSUs covered by this Agreement shall vest as described in this Section.

(a)The RSUs covered by this Agreement shall vest and become nonforfeitable and payable to the Grantee pursuant to Section 5 hereof as follows, provided Grantee has continuously been employed with the Company or a Subsidiary through such respective Vesting Date:

Percentage of RSU Vesting	Vesting Date
33.3%	(a) One Year from Grant Date
33.3%	(b) Two Years from Grant Date
33.3%	(c) Three Years From Grant Date

010-8970-2061/1

Any RSUs that do not so become nonforfeitable on a Vesting Date will be forfeited, including, except as provided in Section 4(b)or Section 4(d)below, if the Grantee ceases to be continuously employed by the Company or a Subsidiary prior to a Vesting Date. For purposes of this Agreement, "continuously employed" (or substantially similar term) means the absence of any interruption or termination of the Grantee's employment with the Company or with a Subsidiary of the Company. Continuous employment shall not be considered interrupted or terminated in the case of sick leave, military leave or any other leave of absence approved by the Company or in the case of transfers between locations of the Company and its Subsidiaries.

(b)Notwithstanding Section 4(a)above, all of the RSUs shall become nonforfeitable and payable to the Grantee pursuant to Section 5hereof upon the occurrence of any of the following events (each, a "Paying Event") at a time when the RSUs have not been forfeited (to the extent the RSUs have not previously become nonforfeitable):

(i)the Grantee's death or becoming Disabled while the Grantee is continuously employed by the Company or any of its Subsidiaries; or

(ii)the Grantee's retirement (A) at age 62 or older while continuously employed by the Company or any of its Subsidiaries; or (B) at or after such time as the Grantee's age (minimum of age 55), plus full years of continuous employment by the Company or any of its Subsidiaries, equals 75.

(c)For purposes of this Section 4, the Grantee shall be considered "Disabled" if the Grantee is: (i) unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than twelve months, or (ii) by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than twelve months, receiving income replacement benefits for a period of not less than three months under an accident and health plan covering employees of the Company.

(d)(i) Notwithstanding Section 4(a)above, if at any time before a Vesting Date or forfeiture of the RSUs, and while the Grantee is continuously employed by the Company or a Subsidiary, a Change in Control occurs, then the unvested RSUs will become nonforfeitable and payable to the Grantee in accordance with Section 5hereof, except to the extent that a Replacement Award is provided to the Grantee in accordance with Section 4(d)(ii)to continue, replace or assume the RSUs covered by this Agreement (the "Replaced Award").

(ii)For purposes of this Agreement, a "Replacement Award" means an award (A) of the same type (e.g., time-based restricted stock units) as the Replaced Award, (B) that has a value at least equal to the value of the Replaced Award, (C) that relates to publicly traded equity securities of the Company or its successor in the Change in

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010-8970-2061/1

Control or another entity that is affiliated with the Company or its successor following the Change in Control or is payable solely in cash, (D) if the Grantee holding the Replaced Award is subject to U.S. federal income tax under the Code, the tax consequences of which to such Grantee under the Code are not less favorable to such Grantee than the tax consequences of the Replaced Award, and (E) the other terms and conditions of which are not less favorable to the Grantee holding the Replaced Award than the terms and conditions of the Replaced Award (including the provisions that would apply in the event of a subsequent Change in Control). A Replacement Award may be granted only to the extent it does not result in the Replaced Award or Replacement Award failing to comply with or be exempt from Section 409A of the Code. Without limiting the generality of the foregoing, the Replacement Award may take the form of a continuation of the Replaced Award if the requirements of the two preceding sentences are satisfied. The determination of whether the conditions of this Section 4(d)(ii) are satisfied will be made by the Committee, as constituted immediately before the Change in Control, in its sole discretion.

(iii)If, upon receiving a Replacement Award, the Grantee's employment with the Company or a Subsidiary (or any of their successors) (as applicable, the "Successor") is subsequently terminated by the Grantee for Good Reason or by the Successor without Cause within a period of two years after the Change in Control, 100% of the Replacement Award will become nonforfeitable and payable with respect to the time-based restricted stock units covered by such Replacement Award.

(iv)A termination by the Grantee for "Good Reason" means Grantee's termination of his or her employment with the Successor as a result of the occurrence of any of the following: (A) a change in the Grantee's principal location of employment that is greater than 50 miles from such location as of the date of this Agreement without the Grantee's consent; provided, however, that the Grantee hereby acknowledges that the Grantee may be required to engage in travel in connection with the performance of the Grantee's duties and that such travel shall not constitute a change in the Grantee's principal location of employment for purposes hereof; (B) a material diminution in the Grantee's base compensation; (C) a change in the Grantee's position with the Successor without the Grantee's consent such that there is a material diminution in the Grantee's authority, duties or responsibilities; or (D) any other action or inaction that constitutes a material breach by the Successor of the agreement, if any, under which the Grantee provides services to the Successor or its subsidiaries. Notwithstanding the foregoing, the Grantee's termination of the Grantee's employment with the Successor as a result of the occurrence of any of the foregoing shall not constitute a termination for "Good Reason" unless (X) the

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Grantee gives the Successor written notice of such occurrence within 90 days of such occurrence and such occurrence is not cured by the Successor within 30 days of the date on which such written notice is received by the Successor and (Y) the Grantee actually terminates his or her employment with the Successor prior to the 365th day following such occurrence.

(v)A termination by the Successor without "Cause" means the Successor's termination of the Grantee's employment with the Successor under circumstances that do not involve or relate to the occurrence of any of the following: (A) an act or acts of personal dishonesty taken by the Grantee and intended to result in substantial personal enrichment of the Grantee at the expense of the Company; (B) repeated failure by the Grantee to devote reasonable attention and time during normal business hours to the business and affairs of the Company or to use the Grantee's reasonable best efforts to perform faithfully and efficiently the responsibilities assigned to the Grantee (provided that such failure is demonstrated to be willful and deliberate on the Grantee's part and is not remedied in a reasonable period of time after receipt of written notice from the Company); or (C) the conviction of the Grantee of a felony.

5.Form and Time of Payment of RSUs.

(a)Payment for the RSUs, after and to the extent they have become nonforfeitable, shall be made in the form of shares of Common Stock. Except as provided inSection 5(b)or 5(c), payment shall be made within 10 days following the date that the RSUs become nonforfeitable pursuant to Section 4hereof.

(b)If the RSUs become nonforfeitable (i) by reason of the occurrence of a Change in Control as described in Section 4(d), and if the Change in Control does not constitute a "change in control" for purposes of Section 409A(a)(2)(A)(v) of the Code, or (ii) by reason of a termination of the Grantee's employment by reason of retirement, and if such termination does not constitute a "separation from service" for purposes of Section 409A(a)(2)(A)(i) of the Code, then payment for RSUs will be made upon the earliest of (v) the Grantee's "separation from service" with the Company and its Subsidiaries (determined in accordance with Section 409A(a)(2)(A)(i) of the Code), (w) the Vesting Date for such RSUs, (x) the Grantee's death, (y) the occurrence of a Change in Control that constitutes a "change in control" for purposes of Section 409A(a)(2)(A)(v) of the Code, or (z) the Grantee's becoming Disabled.

(c)If the RSUs become payable on the Grantee's "separation from service" with the Company and its Subsidiaries within the meaning of Section 409A(a)(2)(A)(i) of the Code (including by reason of the Grantee's retirement as described in Section 4(b)(ii), due to the termination of the Grantee's employment under the conditions specified in Section 4(d)(iii)of this Agreement or by reason of Section 5(b)) and the Grantee is a "specified employee" as determined pursuant to procedures adopted by the Company in compliance with Section 409A of the Code, then payment for the RSUs shall be made on the earlier of the first day of the seventh month after the

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010-8970-2061/1

date of the Grantee's "separation from service" with the Company and its Subsidiaries within the meaning of Section 409A(a)(2)(A)(i) of the Code or the Grantee's death.

(d)Except to the extent provided by Section 409A of the Code and permitted by the Committee, no Common Stock may be issued to the Grantee at a time earlier than otherwise expressly provided in this Agreement.

(e)The Company's obligations to the Grantee with respect to the RSUs will be satisfied in full upon the issuance of Common Stock corresponding to such RSUs.

6.Dividend Equivalents; Voting and Other Rights.

(a)The Grantee shall have no rights of ownership in the Common Stock underlying the RSUs and no right to vote the Common Stock underlying the RSUs until the date on which the shares of Common Stock underlying the RSUs are issued or transferred to the Grantee pursuant to Section 5above.

(b)From and after the Date of Grant and until the earlier of (i) the time when the RSUs become nonforfeitable and are paid in accordance with Section 5hereof or (ii) the time when the Grantee's right to receive Common Stock in payment of the RSUs is forfeited in accordance with Section 4hereof, on the date that the Company pays a cash dividend (if any) to holders of Common Stock generally, the Grantee shall be entitled to a current cash payment equal to the value of the product of (x) the dollar amount of the cash dividend paid per share of Common Stock on such date and (y) the total number of RSUs covered by this Agreement. Such dividend equivalents (if any) shall be paid in cash during the vesting period for the RSUs.

(c)The obligations of the Company under this Agreement will be merely that of an unfunded and unsecured promise of the Company to deliver shares of Common Stock in the future, and the rights of the Grantee will be no greater than that of an unsecured general creditor. No assets of the Company will be held or set aside as security for the obligations of the Company under this Agreement.

7.Adjustments. The RSUs are subject to mandatory adjustment under the terms of Section 11 of the Plan.

8.Withholding Taxes. To the extent that the Company is required to withhold federal, state, local or foreign taxes in connection with the delivery to the Grantee of Common Stock or any other payment to the Grantee or any other payment or vesting event under this Agreement, the Grantee hereby authorizes withholding from payroll and any other amounts payable to the Grantee, including amounts payable hereunder, and otherwise agrees to make adequate provision for, any sums required to satisfy such tax withholding obligations of the Company. The Company shall have no obligation to make delivery or payment hereunder until the tax withholding obligations of the Company have been satisfied by the Grantee. If all or any part of such withholding requirement be satisfied by retention by the Company of a portion of the Common Stock to be delivered to the Grantee or by delivering to the Company other shares of Common Stock held by the Grantee, the shares so retained shall be credited against such withholding requirement at the Market Value per Share of such Common Stock on the date of such delivery. In no event will the market value of the Common Stock to be withheld and/or delivered pursuant to this Section 8to satisfy applicable withholding

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010-8970-2061/1

taxes exceed the minimum amount of taxes required to be withheld, unless otherwise agreed to by the Grantee, provided, however, that such amount shall not exceed the statutory maximum withholding rates.

9.Compliance With Law. The Company shall make reasonable efforts to comply with all applicable federal and state securities laws; provided, however, notwithstanding any other provision of the Plan and this Agreement, the Company shall not be obligated to issue any Common Stock pursuant to this Agreement if the issuance thereof would result in a violation of any such law.

10.Compliance With Section 409A of the Code. To the extent applicable, it is intended that this Agreement and the Plan comply with the provisions of Section 409A of the Code. This Agreement and the Plan shall be administered in a manner consistent with this intent, and any provision that would cause this Agreement or the Plan to fail to satisfy Section 409A of the Code shall have no force or effect until amended to comply with Section 409A of the Code (which amendment may be retroactive to the extent permitted by Section 409A of the Code and may be made by the Company without the consent of the Grantee).

11.Interpretation. Any reference in this Agreement to Section 409A of the Code will also include any proposed, temporary or final regulations, or any other guidance, promulgated with respect to such Section by the U.S. Department of the Treasury or the Internal Revenue Service. Except as expressly provided in this Agreement, capitalized terms used herein will have the meaning ascribed to such terms in the Plan.

12.No Employment Rights. The grant of the RSUs under this Agreement to the Grantee is a voluntary, discretionary award being made on a one-time basis and it does not constitute a commitment to make any future awards. The grant of the RSUs and any payments made hereunder will not be considered salary or other compensation for purposes of any severance pay or similar allowance, except as otherwise required by law. Nothing contained in this Agreement shall confer upon the Grantee any right to be employed or remain employed by the Company or any of its Subsidiaries, nor limit or affect in any manner the right of the Company or any of its Subsidiaries to terminate the employment or adjust the compensation of the Grantee.

13.Relation to Other Benefits. Any economic or other benefit to the Grantee under this Agreement or the Plan shall not be taken into account in determining any benefits to which the Grantee may be entitled under any profit-sharing, retirement or other benefit or compensation plan maintained by the Company or any of its Subsidiaries and shall not affect the amount of any life insurance coverage available to any beneficiary under any life insurance plan covering employees of the Company or any of its Subsidiaries.

14.Amendments. Any amendment to the Plan shall be deemed to be an amendment to this Agreement to the extent that the amendment is applicable hereto; provided, however, that (a) no amendment shall adversely affect the rights of the Grantee under this Agreement without the Grantee's written consent, and (b) the Grantee's consent shall not be required to an amendment that is deemed necessary by the Company to ensure compliance with Section 409A of the Code.

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15.Severability. In the event that one or more of the provisions of this Agreement shall be invalidated for any reason by a court of competent jurisdiction, any provision so invalidated shall be deemed to be separable from the other provisions hereof, and the remaining provisions hereof shall continue to be valid and fully enforceable.

16.Relation to Plan. This Agreement is subject to the terms and conditions of the Plan. In the event of any inconsistency between the provisions of this Agreement and the Plan, the Plan shall govern. The Committee acting pursuant to the Plan, as constituted from time to time, shall, except as expressly provided otherwise herein or in the Plan, have the right to determine any questions which arise in connection with this Agreement. In addition, the RSUs shall be subject to the terms and conditions of the Company's clawback policy in effect on the Date of Grant as if such RSUs were "Incentive-Based Compensation" (as such term is defined in such clawback policy).

17.Successors and Assigns. Without limiting Section 3hereof, the provisions of this Agreement shall inure to the benefit of, and be binding upon, the successors, administrators, heirs, legal representatives and assigns of the Grantee, and the successors and assigns of the Company.

18.Governing Law. This Agreement will be construed under the laws of the Commonwealth of Pennsylvania, without regard to its conflict of law provisions, and the parties consent and agree that the federal and state courts of the Commonwealth of Pennsylvania will have exclusive jurisdiction over any dispute relating to this Non- Competition Agreement.

19.Acknowledgement. The Grantee acknowledges that the Grantee (a) has received a copy of the Plan, (b) has had an opportunity to review the terms of this Agreement and the Plan, (c) understands the terms and conditions of this Agreement and the Plan and (d) agrees to such terms and conditions.

20.Counterparts. This Agreement may be executed in one or more counterparts, each of which shall be deemed to be an original but all of which together will constitute one and the same agreement.

[signature page follows]

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010-8970-2061/1

IN WITNESS WHEREOF, the Company has caused this Agreement to be executed on its behalf by its duly authorized officer and the Grantee has executed this Agreement, effective as of the day and year first above written.

HARSCO CORPORATION

By: /s/ F. Nicholas Grasberger III Name: F. Nicholas Grasberger III Title: Chairman, President and CEO

The undersigned hereby acknowledges receipt of an executed version of this Agreement and accepts the award of RSUs granted hereunder on the terms and conditions set forth herein and in the Plan (including the terms of the Non-Competition Agreement, attached hereto as Exhibit A).

GRANTEE

By:

Name:

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EXHIBIT A

Non-Competition Agreement

1.Grant. Grantee acknowledges that Grantee has access to the confidential and proprietary trade secret information of Harsco Corporation, including its subsidiaries, joint ventures, and operating divisions (the "Company"), as further described below ("Confidential/Proprietary Trade Secret Information"). Further, Grantee acknowledges that Grantee derives significant value from the Company and from the Confidential/Proprietary Trade Secret Information provided during the term of employment with the Company, which enables Grantee to optimize the performance of the Company's performance and Grantee's own personal, professional, and financial benefit. In consideration of the grant described in the award agreement (the "Agreement") to which these terms, conditions and provisions (the "Non-Competition Agreement") are attached as an exhibit, Grantee agrees that, during Grantee's employment by the Company, and for a period of twelve (12) months after the cessation of such employment for any reason (both such periods collectively referred to as the "Restricted Period"), Grantee will not, directly or indirectly, engage in any of the following competitive activities:

(a)For Grantee or on behalf of any other corporation, business, partnership, individual, or other entity, directly or indirectly solicit, divert, contract with, or attempt to solicit, divert, or contract with, any customer with whom Grantee had Material Contact during the final two (2) years of Grantee's employment with the Company concerning any products or services that are similar to those that Grantee was responsible for or were otherwise involved with during Grantee's employment with the Company. For purposes of this Non-Competition Agreement, the Grantee will have had "Material Contact" with a customer if: (i) Grantee had business dealings with the customer on the Company's behalf; (ii) Grantee was responsible for supervising or coordinating the dealings between the Company and the customer; or (iii) Grantee obtained Confidential/Proprietary Trade Secret Information about the customer as a result of Grantee's association with the Company;

(b)Within the geographic territory where Grantee was employed by the Company, obtained knowledge of Confidential/Proprietary Trade Secret Information, or had contact with the Company's customers, become employed by or otherwise render services to (as a director, employee, contractor or consultant) or have any ownership interest in any business which is engaged in offering the same or similar products or services as, or otherwise competes with those Company, including its subsidiaries and operating unit(s) with which Grantee was employed or in any way involved during the last twelve (12) months of employment with the Company; or

(c)(i) induce, offer, assist, encourage or suggest that another business or enterprise offer employment to or enter into a consulting arrangement with

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any employee, agent or representative of the Company or (ii) induce, offer, assist, encourage or suggest that any employee, agent or representative of the Company, including its subsidiaries and joint ventures, terminate his or her employment or business affiliation with the Company or accept employment with any other business or enterprise.

(d)Confidential/Proprietary Trade Secret Information.

(i)    Grantee agrees to keep secret and confidential all Confidential/Proprietary Trade Secret Information (further described below) acquired by Grantee while employed by the Company or concerning the business and affairs of the Company, its vendors, its customers, and its affiliates (whether of a business, commercial or technological nature), and further agrees that Grantee will not disclose any such Confidential/Proprietary Trade Secret Information so acquired to any individual, partner, company, firm, corporation or other person or use the same in any manner other than in connection with the business and affairs of the Company and its affiliates. Except in the performance of services for the Company, the Grantee will not, for so long as the Confidential/Proprietary Trade Secret Information remains so designated under applicable law, use, disclose, reproduce, distribute, transmit, reverse engineer, decompile, disassemble, or transfer the Confidential/Proprietary Trade Secret Information or any portion thereof.

(ii)    For purposes of this Non-Competition Agreement, "Confidential/Proprietary Trade Secret Information" includes all information of a confidential or proprietary nature that relates to the business, products, services, research or development of the Company, and its affiliates or their respective suppliers, distributors, customers, independent contractors or other business relations. Confidential/Proprietary Trade Secret Information also includes, but is not limited to, the following: (A) internal business information (including information relating to strategic and staffing plans and practices, business, training, financial, marketing, promotional and sales plans and practices, cost, rate and pricing structures, accounting and business methods and customer and supplier lists); (B) identities of, individual requirements of, specific contractual arrangements with and information about, the Company's suppliers, distributors, customers, independent contractors or other business relations and their confidential information; (C) trade secrets, copyrightable works and other confidential information (including ideas, formulas, recipes, compositions, inventions, innovations, improvements, developments, methods, know-how, manufacturing and production processes and techniques, research and development information, compilations of data and analyses, data and databases relating thereto, techniques, systems, records, manuals, documentation, models, drawings, specifications, designs, plans, proposals, reports and all similar or related information whether patentable or unpatentable and whether or not reduced to practice); (D) other intellectual property rights of

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the Company, or any of its affiliates; and (E) any other information that would constitute a trade secret under the Pennsylvania Uniform Trade Secrets Act, as amended from time to time (or any successor). The term "Confidential/Proprietary Trade Secret Information" also includes any information or data described above which the Company obtains from another party and which the Company treats as proprietary or designates as trade secrets, whether or not owned or developed by the Company.

(iii)    All documents and materials supplied to Grantee or developed by Grantee in the course of, or as a result of Grantee's employment at the Company whether in hard copy, electronic format or otherwise shall be the sole property of the Company. Grantee will at any time upon the request of the Company and in any event promptly upon termination of Grantee's employment or relationship with the Company, but in any event no later than five (5) business days after such termination, deliver all such materials to the Company and will not retain any originals or copies of such materials, whether in hard copy form or as computerized and/or electronic records. Except to the extent approved by the Company or required by Grantee's bona fide job duties for the Company, the Grantee also agrees that Grantee will not copy or remove from the Company's place of business or the place of business of a customer of the Company, property or information belonging to the Company or the customer or entrusted to the Company or the customer. In addition, the Grantee agrees that Grantee will not provide any such materialstoanycompetitoroforentityseekingtocompetewiththeCompany unless specifically approved in writing by the Company. Notwithstanding anything in paragraph 1(d)(3) of this Non-Competition Agreement to the contrary, if the Company needs to take legal action to secure such return delivery of such materials, Grantee shall be responsible for all legal fees, costs and expenses incurred by the Company in doing so.

(iv)    Grantee understands that nothing contained in this Agreement limits Grantee’s ability to file a charge or complaint with any federal, state or local governmental agency or commission (“Government Agencies”). Grantee further understands that this Agreement does not limit Grantee’s ability to communicate with any Government Agencies or otherwise participate in any investigation or proceeding that may be commenced by any Government Agency including providing documents or other information without notice to the Company. This Agreement does not limit the Grantee’s right to receive an award for information provided to any Government Agencies.

2.Subsequent Employment.

(a)Advise the Company of New Employment. In the event of a cessation of Grantee's employment with the Company, and during the Restricted Period described in paragraph 1 above, Grantee agrees to disclose to the Company, the name and address of any new employer or business affiliation within ten (10) calendar days of Grantee's accepting such position. In the event that Grantee fails to notify the Company of such new

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employment or business affiliation as required above, the Restricted Period will be extended by a period equal to the period of nondisclosure.

(b)Grantee's Ability to Earn Livelihood. Grantee acknowledges that, in the event of a cessation of Grantee's employment with the Company, for any reason and at any time, the provisions of paragraph 1 of this Non-Competition Agreement will not unreasonably restrict Grantee's ability to earn a living. Grantee and the Company acknowledge that Grantee's rights have been limited by this Non-Competition Agreement only to the extent reasonably necessary to protect the legitimate interests of the Company in its Confidential/Proprietary Trade Secret Information.

3.Enforcement. Grantee agrees that if Grantee violates the covenants and agreements set forth in this Non-Competition Agreement, the Company would suffer irreparable harm, and that such harm to the Company may be impossible to measure in monetary damages. Accordingly, in addition to any other remedies which the Company may have at law or in equity, the Company will have the right to have all obligations, undertakings, agreements, covenants and other provisions of this Non-Competition Agreement specifically performed by Grantee, and the Company will have the right to obtain preliminary and permanent injunctive relief to secure specific performance, and to prevent a breach or contemplated breach, of this Non- Competition Agreement. In such event, the Company will be entitled to an accounting and repayment of all profits, compensation, remunerations or benefits which Grantee or others, directly or indirectly, have realized or may realize as a result of, growing out of, or in conjunction with any violation of this Non-Competition Agreement. Such remedies will be an addition to and not in limitation of any injunctive relief or other rights or remedies to which the Company is or may be entitled at law or in equity. In the event that the Company obtains any requested relief in any action brought to enforce the terms of this Non-Competition Agreement through court proceedings, the Company will be entitled to reimbursement for all legal fees, costs and expenses incident to enforcement.

4.Severability. If any section, paragraph, term or provision of this Non-Competition Agreement, or the application thereof, is determined by a competent court or tribunal to be invalid or unenforceable, then the other parts of such section, paragraph, term or provision will not be affected thereby and will be given full force and effect without regard to the invalid or unenforceable portions, and the section, paragraph, term or provision of this Non-Competition Agreement will be deemed modified to the extent necessary to render it valid and enforceable.

5.Miscellaneous.

(a)Employment.

(i)    This Non-Competition Agreement does not constitute a guarantee of employment and termination of employment will not affect the enforceability of this Non-Competition Agreement.

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(ii)    Grantee agrees that if Grantee is transferred from the entity or division which was Grantee's employer at the time Grantee signed this Non-Competition Agreement to employment by another division or another company that is a subsidiary or affiliate of Harsco Corporation, and Grantee has not entered into a superseding agreement with the new employer covering the subject matter of this Non-Competition Agreement, then this Non-Competition Agreement will continue in effect and the Grantee's new employer will be termed "the Company" for all purposes hereunder and will have the right to enforce this Non-Competition Agreement as Grantee's employer. In the event of any subsequent transfer, Grantee's new employer will succeed to all rights under this Non- Competition Agreement so long as such employer will be Harsco Corporation or one of its subsidiaries or affiliates and so long as this Non-Competition Agreement has not been superseded.

(b)Headings. The headings contained in this Non-Competition Agreement are inserted for convenience of reference only, and will not be deemed to be a part of this Non-Competition Agreement for any purposes, and will not in any way define or affect the meaning, construction or scope of any of the provisions of this Non-Competition Agreement.

(c)Governing Law. This Non-Competition Agreement will be construed under the laws of the Commonwealth of Pennsylvania, without regard to its conflict of law provisions, and the parties consent and agree that the federal and state courts of the Commonwealth of Pennsylvania will have exclusive jurisdiction over any dispute relating to this Non- Competition Agreement.

(d)Supplemental Nature of this Non-Competition Agreement. The restrictions set forth in paragraph 1 of this Non-Competition Agreement will be in addition to any other such restrictive covenants agreed to through separate agreements, if any, between Grantee and the Company and will survive the exercise of the equity award evidenced by the Agreement.

(e)Waiver. The failure by the Company to enforce any right or remedy available to it under this Non-Competition Agreement will not be construed to be a waiver of such right or remedy with respect to any other prior, concurrent or subsequent breach or failure. No waiver of rights under this Non-Competition Agreement will be effective unless made in writing with specific reference to this Non-Competition Agreement.

(f)Notification. Grantee agreed that the Company may notify any third party about Grantee's obligations under this Non-Competition Agreement until such time as Grantee has performed all of Grantee's obligations hereunder. Upon the Company's request, Grantee agrees to provide the Company with information, including, but not limited to, supplying details of Grantee's subsequent employment, sufficient to verify that Grantee has not breached, or is not breaching, any covenant in this Non-Competition Agreement.

(g)Tolling. In the event that Grantee violates any of the covenants set forth in this Non-Competition Agreement, then the Company shall have the benefit

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of the full period of the covenants such that the covenants shall have the duration of the Restricted Period computed from the date Grantee ceased violation of the covenants, either by order of the court or otherwise.

(h)Acknowledgments.

(i)    Grantee acknowledges and agrees that this Non-Competition Agreement is in consideration of, (A) the grant evidenced by the Agreement, (B) access to Confidential/Proprietary Trade Secret Information, as required by Grantee's job duties, and (C) access to important customer relationships and the associated customer goodwill of the Company.

(ii)    Grantee acknowledges that he or she has carefully read and considered the provisions of this Non-Competition Agreement, and that this Non-Competition Agreement is reasonable as to time and scope and activities prohibited, given the Company's need to protect its interests and given the consideration provided to Grantee in the form of the grant evidenced by the Agreement.

(iii)    Grantee acknowledges that he or she has had an opportunity to consult with an independent legal counsel of Grantee's choosing, and accept the grant contained in the Agreement and continuing employment on the terms set forth in this Non-Competition Agreement.

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EXHIBIT B

Additional Terms and Conditions for International Employees

TERMS AND CONDITIONS

This Exhibit B (this "Exhibit"), which is part of the Agreement, contains additional terms and conditions that govern the RSUs granted to the Grantee under the Plan if he or she resides outside the United States. The terms and conditions in Part A apply to all Grantees outside the United States. The country-specific terms and conditions and/or notifications in Part B will also apply to the Grantee if he or she resides in one of the countries listed below. Unless otherwise defined, capitalized terms used but not defined in this Exhibit have the meanings set forth in the Plan and/or the Agreement.

NOTIFICATIONS

This Exhibit also includes information regarding exchange controls and certain other issues of which the Grantee should be aware with respect to participation in the Plan. The information is based on the exchange control, securities and other laws in effect in the respective countries as of November 2017. Such laws are often complex and change frequently. As a result, the Company strongly recommends that the Grantee not rely on the information in this Exhibit as the only source of information relating to the consequences of his or her participation in the Plan because the information may be out of date at the time that the Grantee vests in the RSUs or sell shares of Common Stock acquired under the Plan.

In addition, the information contained herein is general in nature and may not apply to the Grantee's particular situation, and the Company is not in a position to assure the Grantee of a particular result. Accordingly, the Grantee is advised to seek appropriate professional advice as to how the relevant laws in his or her country may apply to the Grantee's situation.

Finally, if the Grantee is a citizen or resident, or is considered a resident, of a country other than the one in which he or she is currently working, or transferred employment after the RSUs were granted to him or her, the information contained herein may not be applicable. In addition, the Company shall, in its sole discretion, determine to what extent the additional terms and conditions included herein will apply to you under these circumstances.

A.ALL NON-U.S. COUNTRIES ADDITIONAL TERMS AND CONDITIONS

The following additional terms and conditions will apply to the Grantee if he or she resides in any country outside the United States.

Responsibility for Taxes. The following section replaces Section 8 of the Agreement in its entirety:

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The Grantee acknowledges that, regardless of any action taken by the Company or, if different, the Grantee's employer (the "Employer"), the ultimate liability for all income tax, social insurance, payroll tax, fringe benefits tax, payment on account or other tax-related items related to the Grantee's participation in the Plan and legally applicable to the Grantee ("Tax-Related Items") is and remains the Grantee's responsibility and may exceed the amount actually withheld by the Company or the Employer. The Grantee further acknowledges that the Company and/or the Employer (1) make no representations or undertakings regarding the treatment of any Tax-Related Items in connection with any aspect of the RSU, including, but not limited to, the grant, vesting or settlement of the RSUs, the subsequent sale of shares of Common Stock acquired pursuant to such settlement and the receipt of any dividends and/or any dividend equivalents; and (2) do not commit to and are under no obligation to structure the terms of the grant or any aspect of the RSUs to reduce or eliminate the Grantee's liability for Tax-Related Items or achieve any particular tax result. Further, if the Grantee is subject to Tax-Related Items in more than one jurisdiction between the Date of Grant and the date of any relevant taxable or tax withholding event, as applicable, the Grantee acknowledges that the Company and/or the Employer (or former employer, as applicable) may be required to withhold or account for Tax-Related Items in more than one jurisdiction.

Prior to any relevant taxable or tax withholding event, as applicable, the Grantee agrees to make adequate arrangements satisfactory to the Company and/or the Employer to satisfy all Tax- Related Items. In this regard, the Grantee authorizes the Company and/or the Employer to satisfy the obligations with regard to all Tax-Related Items by one or a combination of the following methods: (i) requiring payment by the Grantee to the Company, on demand, by cash, check or other method of payment as may be determined acceptable by the Company; or (ii) withholding from the Grantee's wages or other cash compensation paid to the Grantee by the Company and/or the Employer; or (iii) withholding from proceeds of the sale of shares of Common Stock acquired at vesting of the RSUs either through a voluntary sale or through a mandatory sale arranged by the Company (on the Grantee's behalf pursuant to this authorization) without further consent; or (iv) withholding shares of Common Stock issuable at vesting of the RSUs.

Depending on the withholding method, the Company and/or the Employer may withhold or account for Tax-Related Items by considering applicable minimum statutory withholding rates or other applicable withholding rates, including maximum applicable rates, in which case the Grantee will receive a refund of any over-withheld amount in cash and will have no entitlement to the Common Stock equivalent. If the obligation for Tax-Related Items is satisfied by withholding in shares of Common Stock, for tax purposes, the Grantee is deemed to have been issued the full number of shares of Common Stock subject to the vested RSUs, notwithstanding that a number of the shares of Common Stock are held back solely for the purpose of paying the Tax-Related Items.

Finally, the Grantee agrees to pay the Company or the Employer any amount of Tax-Related Items that the Company or the Employer may be required to withhold or account for as a result of the Grantee's participation in the Plan that cannot be satisfied by the means previously described. The Company may refuse to issue or deliver the shares or the proceeds of the sale of shares of Common Stock, if the Grantee fails to comply with the Grantee's obligations in connection with the Tax-Related Items.

Nature of Grant. In accepting the grant, the Grantee acknowledges, understands and agrees that: (1) the Plan is established voluntarily by the Company, it is discretionary in nature and it may be modified, amended, suspended or terminated by the Company at any time, to the extent permitted by the Plan; (2) all decisions with respect to future RSU or other grants, if any, will be at the sole discretion of the Company; (3) the Grantee is voluntarily participating in the Plan; (4)

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the RSU and the shares of Common Stock subject to the RSU are not intended to replace any pension rights or compensation; (5) the future value of the underlying shares of Common Stock is unknown, indeterminable and cannot be predicted with certainty; (6) no claim or entitlement to compensation or damages shall arise from forfeiture of the RSUs resulting from the termination of the Grantee's employment or other service relationship (for any reason whatsoever, whether or not later found to be invalid or in breach of employment laws in the jurisdiction where the Grantee is employed or the terms of the Grantee's employment agreement, if any), and in consideration of the grant of the RSUs to which the Grantee is otherwise not entitled, the Grantee irrevocably agrees never to institute any claim against the Company, any of its Subsidiaries or the Employer, waives the Grantee's ability, if any, to bring any such claim, and releases the Company, its Subsidiaries and the Employer from any such claim; if, notwithstanding the foregoing, any such claim is allowed by a court of competent jurisdiction, then, by participating in the Plan, the Grantee shall be deemed irrevocably to have agreed not to pursue such claim and agree to execute any and all documents necessary to request dismissal or withdrawal of such claim; (7) for purposes of the RSUs, the Grantee's employment or service relationship will be considered terminated as of the date the Grantee is no longer actively providing services to the Company or one of its Subsidiaries (regardless of the reason for such termination and whether or not later found to be invalid or in breach of employment laws in the jurisdiction where the Grantee is employed or providing services or the terms of the Grantee's employment or service agreement, if any) and unless otherwise expressly provided in these Terms and Conditions or determined by the Company, the Grantee's right to vest in the RSUs under the Plan, if any, will terminate as of such date and will not be extended by any notice period (e.g., the Grantee's period of service would not include any contractual notice period or any period of "garden leave" or similar period mandated under employment laws in the jurisdiction where the Grantee is employed or providing services or the terms of the Grantee's employment or service agreement, if any); the Company shall have the exclusive discretion to determine when the Grantee is no longer actively providing services for purposes of the Grantee's RSU grant (including whether the Grantee may still be considered to be providing services while on an approved leave of absence); (8) unless otherwise provided in the Plan or by the Company in its discretion, the RSUs and the benefits evidenced by these Terms and Conditions do not create any entitlement to have the RSUs or any such benefits transferred to, or assumed by, another company nor to be exchanged, cashed out or substituted for, in connection with any corporate transaction affecting the shares of the Company; (9) the RSUs and the shares of Common Stock subject to the RSUs, and the income and value of same, are not part of normal or expected compensation for any purpose, including, without limitation, calculating severance, resignation, termination, redundancy, dismissal, end-of-service payments, bonuses, long-service awards, pension or retirement or welfare benefits or similar payments; and (10) the Grantee acknowledges and agrees that neither the Company, the Employer nor any subsidiary or affiliate of the Company shall be liable for any foreign exchange rate fluctuation between the Grantee's local currency and the United States Dollar that may affect the value of the RSUs or of any amounts due to the Grantee pursuant to the settlement of the RSUs or the subsequent sale of any shares of Common Stock acquired upon settlement.

No Advice Regarding Grant. The Company is not providing any tax, legal or financial advice, nor is the Company making any recommendations regarding the Grantee's participation in the Plan, or the Grantee's acquisition or sale of the underlying shares of Common Stock. The Grantee is hereby advised to consult with the Grantee's own personal tax, legal and financial advisors regarding the Grantee's participation in the Plan before taking any action related to the Plan.

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Data Privacy for Grantees not based in the European Economic Area or the United Kingdom.

The Grantee hereby explicitly and unambiguously consents to the collection, use and transfer, in electronic or other form, including email, of the Grantee's personal data as described in the Agreement and any other RSU grant materials ("Data") by and among, as applicable, the Employer, the Company and its subsidiaries and affiliates for the exclusive purpose of implementing, administering and managing the Grantee's participation in the Plan.

The Grantee understands that the Company and the Employer may hold certain personal information about the Grantee, including, but not limited to, the Grantee's name, home

address and telephone number, date of birth, social insurance number or other identification number, salary, nationality, job title, any shares of stock or directorships held in the Company, details of all RSUs or any other entitlement to shares of stock awarded, canceled, exercised, vested, unvested or outstanding in the Grantee's favor, for the exclusive purpose of implementing, administering and managing the Plan.

The Grantee understands that Data will be transferred to the Company's stock transfer agent and/or broker, or such other stock plan service provider as may be selected by the Company in the future, which is assisting the Company with the implementation, administration and management of the Plan.The Grantee understands that the recipients of the Data may be located in the United States or elsewhere (including outside the EEA), and that the recipients' country (e.g., the United States) may have different data privacy laws and protections than the Grantee's country.The Grantee understands that the Grantee may request a list with the names and addresses of any potential recipients of the Data by contacting the Grantee's local human resources representative. The Grantee authorizes the Company, the Company's stock transfer agent and/or broker, and any other possible recipients which may assist the Company (presently or in the future) with implementing, administering and managing the Plan to receive, possess, use, retain and transfer the Data, in electronic or other form, for the sole purpose of implementing, administering and managing the Grantee's participation in the Plan. The Grantee understands that Data will be held only as long as is necessary to implement, administer and manage the Grantee's participation in the Plan. The Grantee understands that the Grantee may, at any time, view Data, request additional information about the storage and processing of Data, require any necessary amendments to Data or refuse or withdraw the consents herein, in any case without cost, by contacting in writing the Grantee's local human resources representative. Further, the Grantee understands that the Grantee is providing the consents herein on a purely voluntary basis.If the Grantee does not consent, or if the Grantee later seeks to revoke the Grantee's consent, the Grantee's employment status or service and career with the Employer will not be adversely affected; the only adverse consequence of refusing or withdrawing the Grantee's consent is that the Company would not be able to grant the Grantee RSUs or other equity awards or administer or maintain such awards. Therefore, the Grantee understands that refusing or withdrawing the Grantee's consent may affect the Grantee's ability to participate in the Plan. For more information on the consequences of the Grantee's refusal to consent or withdrawal of consent, the Grantee understands that the Grantee may contact the Grantee's local human resources representative.

DataPrivacy for Grantees based in the European Economic Area (including the United Kingdom).

The Company and its subsidiaries and affiliates will process the data of the Grantee in accordance with (i) the applicable data privacy policy or policies adopted by the Company or its

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subsidiaries and affiliates; and (ii) the data privacy notice(s) provided to the Grantee covering the processing of the Grantee's data in connection with the Plan.

The Grantee understands and acknowledges that the processing of their data by the Company and its subsidiaries and affiliates in relation to the operation of the Plan is necessaryfor (i) the performance of the Agreement; (ii) to comply with any legal obligation in relation to the operation of the Plan; and (iii) to account for any tax and duties in relation to the Plan.

Governing Law and Venue. The RSU grant and the provisions of the Agreement are governed by, and subject to, the internal substantive laws of the State of Delaware in the United States of America (with the exception of its conflict of law provisions).

For purposes of litigating any dispute that arises directly or indirectly from the relationship of the parties evidenced by this grant or the Agreement, the parties hereby submit to and consent to the exclusive jurisdiction of the Commonwealth of Pennsylvania in the United States of America and agree that such litigation shall be conducted only in the courts of Cumberland County, the Commonwealth of Pennsylvania, or the federal courts for the United States of America for the Middle District of Pennsylvania, and no other courts, where this grant is made and/or to be performed.

Compliance with Law. The following section supplements Section 9 of the Agreement: Notwithstanding any other provision of the Plan or the Agreement, unless there is an available exemption from any registration, qualification or other legal requirement applicable to the shares of Common Stock, the Company shall not be required to deliver any shares issuable upon settlement of the RSUs prior to the completion of any registration or qualification of the shares under any local, state, federal or foreign securities or exchange control law or under rulings or regulations of the U.S. Securities and Exchange Commission ("SEC") or of any other governmental regulatory body, or prior to obtaining any approval or other clearance from any local, state, federal or foreign governmental agency, which registration, qualification or approval the Company shall, in its absolute discretion, deem necessary or advisable. The Grantee understands that the Company is under no obligation to register or qualify the shares with the SEC or any state or foreign securities commission or to seek approval or clearance from any governmental authority for the issuance or sale of the shares. Further, the Grantee agrees that Company shall have unilateral authority to amend the Plan and the Agreement without the Grantee's consent to the extent necessary to comply with securities or other laws applicable to issuance of shares.

Language. If the Grantee has received the Agreement or any other document related to the Plan translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control.

Electronic Delivery and Acceptance. The Company may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means, including email. The Grantee hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through an on-line or electronic system established and maintained by the Company or a third party designated by the Company.

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Severability. The provisions of these Terms and Conditions are severable and if any one or more provisions are determined to be illegal or otherwise unenforceable, in whole or in part, the remaining provisions shall nevertheless be binding and enforceable.

Imposition of Other Requirements. Subject to Section 14 of the Agreement, the Company reserves the right to impose other requirements on the Grantee's participation in the Plan, on the RSUs and on any shares of Common Stock acquired under the Plan, to the extent the Company determines it is necessary or advisable for legal or administrative reasons, and to require the Grantee to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing.

Waiver. The Grantee acknowledges that a waiver by the Company of breach of any provision of these Terms and Conditions shall not operate or be construed as a waiver of any other provision of these Terms and Conditions, or of any subsequent breach by the Grantee or any other Participant.

B.COUNTRY-SPECIFIC ADDITIONAL TERMS AND CONDITIONS AND NOTIFICATIONS

AUSTRALIA

TERMS AND CONDITIONS

Settlement of RSUs. Notwithstanding anything to the contrary in the Agreement, upon the vesting of the RSUs, the Grantee will receive a cash payment in an amount equal to the value of the shares of Common Stock underlying the vested RSUs on the vesting date. As long as the Grantee resides in Australia, he or she may not receive or hold shares of Common Stock in connection with the RSUs under the Plan. Accordingly, any provisions in the Agreement referring to issuance of shares of Common Stock shall not be applicable to the Grantee as long as he or she resides in Australia.

NOTIFICATIONS

Exchange Control Information. Exchange control reporting is required for cash transactions exceeding $10,000 and international fund transfers. The Australian bank assisting with the transaction will file the report.

BELGIUM

NOTIFICATIONS

Tax Reporting Information. Grantee is required to report any bank accounts opened and maintained outside of Belgium on his or her annual Belgian tax return.

BRAZIL

TERMS AND CONDITIONS

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Compliance with Law. By accepting the RSUs, the Grantee acknowledges that he or she agrees to comply with applicable Brazilian laws and pay any and all applicable taxes associated with the vesting of the RSUs, the receipt of any dividends, and the sale of shares of Common Stock acquired under the Plan.

NOTIFICATIONS

Exchange Control Information. If the Grantee is resident or domiciled in Brazil, he or she will be required to submit annually a declaration of assets and rights held outside of Brazil to the Central Bank of Brazil if the aggregate value of such assets and rights is equal to or greater than US $100,000. Assets and rights that must be reported include shares of Common Stock.

CANADA

TERMS AND CONDITIONS

Settlement. Notwithstanding any discretion in the Plan or anything to the contrary in this Agreement, this grant of RSUs, along with any dividend equivalent amounts otherwise payable under Section 6 of this Agreement, shall only be settled in newly-issued shares of Common Stock, and without the use of any form of employee benefit trust.This provision is without prejudice to the application of Section 8 of this Agreement, provided the Grantee has been given a reasonably opportunity to pay (either out his/her own funds or via payroll deduction) the relevant withholding tax amounts.

Continuous Employment.The following provision supplements this Agreement and the Plan:

A Grantee’s “continuous employment” (or substantially similar term) with the Company or a Subsidiary, as the case may be, will be deemed to have been terminated (regardless of the reason for the termination and whether or not later found to be invalid or in breach of applicable law in the jurisdiction where Grantee is rendering services or the terms of Grantee’s employment or other service agreement, if any) on the date that is the earliest of (1) the termination date of Grantee’s status as an employee, (2) the date Grantee receives written notice of termination of Grantee’s status as an employee or service provider, or (3) the date Grantee is no longer actively employed by or actively providing services to the Company or any of its Subsidiaries regardless of any notice period or period of pay in lieu of such notice mandated under applicable law (including, but not limited to, statutory law, regulatory law and/or common law) in the jurisdiction where Grantee is employed or rendering service or the terms of Grantee’s employment or other service agreement, if any.

Notwithstanding the foregoing, if applicable employment or labour standards legislation explicitly requires continued participation in the Plan during a statutory notice period, Grantee acknowledges that his or her right to participate in the Plan, if any, will terminate effective as of the last day of Grantee’s minimum statutory notice period, but Grantee will not earn or be entitled to pro-rata vesting if the vesting date falls after the end of Grantee’s statutory notice period, nor will Grantee be entitled to any compensation for lost vesting.

Cause. For purposes of this Agreement and the Plan, “Cause” means the occurrence of any of the following: (A) an act or acts of personal dishonesty taken by the Grantee and intended to result in substantial personal enrichment of the Grantee at the expense of the Company; (B)

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repeated failure by the Grantee to devote reasonable attention and time during normal business hours to the business and affairs of the Company or to use the Grantee's reasonable best efforts to perform faithfully and efficiently the responsibilities assigned to the Grantee (provided that such failure is demonstrated to be willful and deliberate on the Grantee's part and is not remedied in a reasonable period of time after receipt of written notice from the Company); or (C) the conviction of the Grantee of a felony, indictable offence, or summary conviction offence that is related to the employment or intended employment of the Grantee; provided, however, that if the Grantee is employed in the Province of Ontario, “Cause” instead means willful misconduct, disobedience or willful neglect of duty that is not trivial and has not been condoned by the Company or a Subsidiary.

NOTIFICATIONS

Securities Law Information.

Your participation in the Plan is voluntary, and you acknowledge and agree that you have not been induced to enter into this Agreement or acquire any RSUs or Common Stock by expectation of employment, engagement or appointment or continued employment, engagement or appointment.

You understand that you are permitted to sell Common Stock acquired pursuant to the Plan, provided that the Company is a “foreign issuer” that is not a public company in any jurisdiction of Canada and the sale of the Common Stock acquired pursuant to the Plan takes place: (i) through an exchange, or a market, outside of Canada on the distribution date; or (ii) to a person or company outside of Canada. For purposes hereof, in addition to not being a reporting issuer in any jurisdiction of Canada, a “foreign issuer” is an issuer that: (i) is not incorporated or existing pursuant to the laws of Canada or any jurisdiction of Canada; (ii) does not have its head office in Canada; and (iii) does not have a majority of its executive officers or directors ordinarily resident in Canada. If any designated broker is appointed under the Plan, you shall sell such securities through the designated broker.

For Grantees in the Province of Ontario

Non-Competition Agreement. Section 1(b) of the Non-Competition Agreement does not apply to non-Executive Grantees employed in the Province of Ontario, where “Executive” has the meaning given to it in the Working for Workers Act (Ontario).

Foreign Asset/Account Reporting Information.Grantee is required to report any foreign specified property on form T1135 (Foreign Income Verification Statement) if the total value of the “foreign specified property” exceeds C$100,000 at any time in the year.Foreign specified property includes Common Stock acquired under the Plan, and may include the RSUs.The RSUs must be reported (generally at a nil cost) if the $100,000 cost threshold is exceeded because of other foreign property Grantee holds.If Common Stock is acquired, its cost generally is the adjusted cost base (“ACB”) of the Common Stock.The ACB ordinarily would equal the fair market value of the Common Stock at the time of acquisition, but if Grantee owns other Common Stock, this ACB may have to be averaged with the ACB of the other Common Stock.The form must be filed by April 30 following the taxation year in question.Grantee

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should consult with his or her personal legal and tax advisor, as the case may be, to ensure compliance with applicable reporting obligations.

CHINA

TERMS AND CONDITIONS

Settlement of RSUs. Notwithstanding anything to the contrary in the Agreement, due to local regulatory requirements, upon the vesting of the RSUs, the Grantee will receive a cash payment in China via the Company's local Chinese payroll in an amount equal to the value of the shares of Common Stock underlying the vested RSUs on a vesting date. As long as the Grantee resides in China, he or she may not receive or hold shares of Common Stock in connection with the RSUs under the Plan. Accordingly, any provisions in the Agreement referring to issuance of shares of Common Stock shall not be applicable to the Grantee as long as he or she resides in China.

FRANCE

TERMS AND CONDITIONS

Consent to Receive Information in English. By accepting the grant of the RSUs, the Grantee confirms having read and understood the Plan and the Agreement, which were provided in the English language. The Grantee accepts the terms of those documents accordingly.

En acceptant cette attribution gratuite d'actions, le Grantee confirme avoir lu et compris lePlan et ce Contrat, incluant tous leurs termes et conditions, qui ont été transmis en langue anglaise. Le Grantee accepte les dispositions de ces documents en connaissance de cause.

NOTIFICATIONS

Tax Notification. The RSUs are not intended to be French tax-qualified. Please be aware that the Company intends that any outstanding RSUs granted to you pursuant to the 1995 Executive Incentive Compensation Plan Sub-plan for Restricted Stock Units Granted to Participants in France will continue to meet the requirements for qualified status under French law; therefore, different terms and conditions will apply to such outstanding RSUs. Please refer to the Restricted Stock Unit Agreement for Employees in France applicable to your grant for further details.

Exchange Control Notification. The Grantee may hold shares of Common Stock acquired under the Plan outside of France provided that he or she declares all foreign accounts (including any accounts that were opened or closed during the tax year) on his or her annual French income tax return.

GERMANY

TERMS AND CONDITIONS

Parties to the Agreement. The Agreement is exclusively concluded between Harsco Corporation and the Grantee. The local Harsco entity employing the Grantee is not in any way party to the Agreement or entitled/committed hereby.

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Vesting of RSUs. Notwithstanding anything to the contrary in the Agreement or in the Plan, the Grantee shall be considered "Disabled" for the purposes of this Agreement, if the Grantee's employment contract ends as a consequence of the Grantee being granted a permanent statutory pension for full occupational disability (unbefristete Rente wegen voller Erwerbsminderung) by the competent authorities.

Non-Competition Agreement. Notwithstanding anything to the contrary in the Non-Competition Agreement, it is exclusively concluded between Harsco Corporation and the Grantee. The employer of the Grantee is not in any way party to the Non-Competition Agreement or entitled/committed hereby. The Non-Competition Agreement does not affect in any way a separate non-competition agreement concluded between the Grantee and his/her employer.

INDIA

TERMS AND CONDITIONS

The Grantee hereby agrees that it shall hold the shares of the Common Stock pursuant to this Agreement and the Plan, at all times in accordance with the applicable laws in India, including but not limited to the (Indian) Foreign Exchange Management (Transfer or Issue of Any Foreign Security) Regulations, 2004 (and as amended or replaced), relevant master circulars, directions, notifications issued in this regard by the Reserve Bank of India from time to time and shall carry out the necessary reporting with the Reserve Bank of India at all stages of granting and vesting, if and as may be required. The Grantee agrees to indemnify the Company and/or Subsidiary of the Company with respect to any non-compliance and/or non-adherence by the Grantee of any of the applicable laws in India arising out of holding of the shares of the Common Stock by the Grantee.

The Grantee shall declare the holding of shares of the Common Stock, if and as may be necessary, in its income for taxation purposes and agrees to indemnify the Company and/or Subsidiary of the Company with respect to any and all taxes that it shall be obligated to pay with respect to the shares of the Common Stock such as including but not limited to income tax, capital gain taxes etc., under this Agreement and which may arise as a result of the sale of the shares of the Common Stock and the transactions contemplated hereunder.

LUXEMBOURG

NOTIFICATIONS

Exchange Control Information. Grantee understands that Grantee is required to report any inward remittances of funds to the Banque Centrale de Luxembourg and/or the Service Central de la Statistique et des Études Économiques within 15 working days following the month during which the transaction occurred unless such payment is reported by a Luxembourg-resident financial institution.

MALAYSIA

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Tax Reporting Information.By accepting the RSUs, the Grantee acknowledges that he or she agrees to comply with applicable Malaysian laws and pay any and all applicable taxes associated with the vesting of the RSUs, The Grantee is required to ensure that the local Harsco entity employing the Grantee to reports such share benefit to the Malaysian Inland Revenue Board.

THE NETHERLANDS

TERMS AND CONDITIONS

Non-Competition Agreement. The non-competition agreement entered into between the Company and the Grantee shall be in addition to any non-compete arrangements between the Grantee and his or her employer.

SWITZERLAND

TERMS AND CONDITIONS

Vesting: With the acceptance of a Grant, the Grantee expressly acknowledges that any RSU, PSU and/or SAR shall not give the Grantee any right or entitlement until such Grant is fully vested. The Grant remains fully discretionary until full vesting.

Continuous Employment: In Switzerland, "continuously employed" (or substantially similar term) means the absence of any interruption or termination (issuance of termination notice) of the Grantee's employment with the Company or with a Subsidiary of the Company. Continuous employment shall not be considered interrupted or terminated in the case of sick leave, military leave or any other leave of absence approved by the Company for which compensation needs to be paid by the Company or salary replacement benefits are granted by any insurance or in the case of transfers between locations of the Company and its Subsidiaries. For the avoidance of any doubt, continuous employment ends in any case with the end of the employment, even if any salary replacement benefits continue to be paid by any insurance, pension scheme or social security.

Retirement: For the purpose of the Plan, only a retirement under the rules and conditions of the Swiss pension scheme of the Subsidiary employing the Grantee shall qualify as retirement for the purpose of vesting of RSU, PSU or termination of SAR, and only if such retirements is (A) at age 62 or older while employed by the Company or any of its Subsidiaries; or (B) at or after such time as the Grantee's age (minimum of age 55), plus full years of continuous employment by the Company or any of its Subsidiaries, equals 75.

Disability: For purposes of the Plan, the Grantee shall be considered "Disabled" if the Grantee is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or qualifies as permanent full disability under the applicable Swiss social security and/or pension laws.

Non-Competition Agreement: For the avoidance of any doubt, any non-competition agreement entered into between the Grantee and the Company in connection with the Plan and grants

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thereunder shall be in addition to any non-competition agreement agreed between the Grantee and the employing Subsidiary and shall not replace such non-competition agreement.

NOTIFICATIONS

Exchange Control Notification. The Grantee may hold shares of Common Stock acquired under the Plan outside of Switzerland provided that he or she declares all foreign accounts (including any accounts that were opened or closed during the tax year) on his or her annual Swiss tax declaration.

UNITED ARAB EMIRATES

NOTIFICATIONS

Securities Law Notice. RSUs under the Plan are granted only to select executive officers and other employees of the Company and its subsidiaries for the purpose of providing such eligible persons with incentives and rewards for performance. The Agreement, including this Exhibit, the Plan and any documents the Grantee may receive in connection with the RSUs are intended for distribution to such eligible persons and must not be delivered to, or relied on, by any other person.

The Emirates Securities and Commodities Authority, the Central Bank, the Ministry of Economy and the Dubai Department of Economic Development do not have any responsibility for reviewing or verifying any documents in connection with the Plan nor have they reviewed or approved the Plan or the Agreement. The securities to which this statement relates may be illiquid and/or subject to restrictions on their resale. The Grantee and/or prospective purchasers of the securities offered should conduct their own due diligence on the securities.

If the Grantee does not understand the contents of the Agreement, including this Exhibit, or the Plan, the Grantee should consult an authorized financial adviser.

UNITED KINGDOM

TERMS AND CONDITIONS

U.K. Sub-Plan. The terms of the U.K. Sub-plan apply to the RSUs.

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EX-10.2

Exhibit 10.2

HARSCO CORPORATION

PERFORMANCE SHARE UNITS AGREEMENT

(FORM)

This PERFORMANCE SHARE UNITS AGREEMENT (this "Agreement") is made as of March 4, 2022, by and between Harsco Corporation, a Delaware corporation, and [Participant Name:First Name Last Name](the "Grantee").

1.Certain Definitions. Capitalized terms used, but not otherwise defined, in this Agreement will have the meanings given to such terms in the Company's 2013 Equity and Incentive Compensation Plan, as amended by Amendment No. 1 to the 2013 Equity and Incentive Compensation Plan (the "Plan").

2.Grant of PSUs. Subject to and upon the terms, conditions and restrictions set forth in this Agreement, including, without limitation, Exhibit A attached hereto (the "Non-Competition Agreement"), any additional terms and conditions for the Grantee's country (Grantees outside the United States only) set forth in the attached Exhibit B which forms part of this Agreement, and in the Plan, the Company grants to the Grantee, as of March 4, 2022 (the "Date of Grant"), a target number of [Granted:Target]performance-based Restricted Stock Units ("PSUs"). Notwithstanding anything in this Section 2 or otherwise in this Agreement to the contrary, the Grantee acknowledges and agrees to be bound by the restrictive covenant terms, conditions and provisions in the Non-Competition Agreement as a "Grantee" as referred to therein.

3.Restrictions on Transfer of PSUs. Subject to Section 15 of the Plan, neither the PSUs granted hereby nor any interest therein or in the Common Stock related thereto shall be transferable prior to payment to the Grantee pursuant to Section 5 hereof other than by will or pursuant to the laws of descent and distribution.

4.Vesting of PSUs.

(a)Subject to the terms and conditions of Section 4 and Section 5 hereof and Exhibit C hereto, the Grantee's right to receive Common Stock in settlement of the PSUs shall become nonforfeitable with respect to (i) 0% to 200% of the PSUs on the basis of the RTSR achievement during the Performance Period as set forth in the Statement of Management Objectives attached hereto as Exhibit C (the "Earned PSUs"). The Earned PSUs will be determined on the date following the end of the Performance Period on which the Committee determines the level of attainment of the Management Objectives for the Performance Period, which date must occur within 60 days after the end of the Performance Period (the "Committee Determination Date"). Except as otherwise provided herein, the Grantee's right to receive Common Stock in settlement of the PSUs is contingent upon his or her remaining in the continuous employ of the Company or a Subsidiary through the end of the Performance Period.

010-8970-2145/1/AMERICAS

(b)For purposes of this Agreement:

(i)"Continuously employed" (or substantially similar term) means the absence of any interruption or termination of the Grantee's employment with the Company or with a Subsidiary of the Company. Continuous employment shall not be considered interrupted or terminated in the case of sick leave, military leave or any other leave of absence approved by the Company or in the case of transfers between locations of the Company and its Subsidiaries;

(ii)"Management Objectives" means the threshold, target and maximum goals established by the Committee for the Performance Period with respect to RTSR, as described in the Statement of Management Objectives. No adjustment of the Management Objectives shall be permitted in respect of any PSUs granted to the Grantee if at the Date of Grant he or she is a Covered Employee if such adjustment would result in the PSUs failing to qualify as a Qualified Performance-Based Award.

(iii)"Performance Period" means the three-year period commencing January 1, 2022 and ending on December 31, 2024.

(iv)"Relative Total Stockholder Return" or "RTSR" has the meaning as set forth in the Statement of Management Objectives.

(c)Notwithstanding the other provisions of this Section 4:

(i)If the Grantee dies or becomes Disabled during any calendar year of the Performance Period while the Grantee is continuously employed by the Company or any of its Subsidiaries (the "Death/Disability Year"), provided that the PSUs have not previously been forfeited or become nonforfeitable at such time, then (notwithstanding anything in the Statement of Management Objectives to the contrary): (A) the Performance Period will be deemed to end on December 31 of the Death/Disability Year (the "Death/Disability Measurement Date"); (B) the PSUs will continue to be eligible to become nonforfeitable (and payable in accordance with Section 5 hereof) as if the Grantee continued to be employed until the end of the Death/Disability Measurement Date; (C) the Earned PSUs will be determined based on RTSR achievement from the start of the Performance Period through the Death/Disability Measurement Date based on the S&P600® Industrials Index as constituted on the first day of the Performance Period; (D) the ending stock price for Total Stockholder Return determination purposes will be based on the average closing stock price for the 30 calendar days immediately preceding the January 1st immediately following the Death/Disability Measurement Date on the principal stock exchange on which the stock then trades; and (E) the Earned PSUs will be determined on the date following the Death/

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Disability Measurement Date on which the Committee determines the level of attainment of the Management Objectives for the shortened Performance Period, which date must occur within 60 days after the Death/Disability Measurement Date.

(ii)If the Grantee retires from the Company prior to the end of the Performance Period (A) at age 62 or older while continuously employed by the Company or any of its Subsidiaries or (B) at or after such time as the Grantee's age (minimum of age 55), plus full years of continuous employment by the Company or any of its Subsidiaries, equals 75, provided that the PSUs have not previously been forfeited or become nonforfeitable at such time, then the PSUs will continue to be eligible to become nonforfeitable in accordance with this Section 4 (and payable in accordance with Section 5 hereof) as if the Grantee continued to be employed until the end of the Performance Period.

(d)(i) Notwithstanding Section 4(a) or Section 4(c) above, if at any time before the Committee Determination Date or forfeiture of the PSUs, and while the Grantee is continuously employed by the Company or a Subsidiary, a Change in Control occurs, provided that the PSUs have not previously been forfeited or become nonforfeitable at such time, then (except to the extent that a Replacement Award is provided to the Grantee in accordance with Section 4(d)(ii) to continue, replace or assume the PSUs covered by this Agreement (the "Replaced Award")) the PSUs will become nonforfeitable and payable to the Grantee in accordance with Section 5 hereof as follows (notwithstanding anything in the Statement of Management Objectives to the contrary): (A) the Performance Period will be deemed to have ended on the date of the Change in Control (the "CIC Measurement Date"); (B) the Earned PSUs will be determined based on RTSR achievement from the start of the Performance Period through the CIC Measurement Date based on the S&P600® Industrials Index as constituted on the first day of the Performance Period; (C) the ending stock price for Total Stockholder Return determination purposes will be based on the average closing stock price for the 30 calendar days immediately preceding the CIC Measurement Date on the principal stock exchange on which the stock then trades; and (D) the Earned PSUs will be determined on the date of the Change in Control.

(ii)For purposes of this Agreement, a "Replacement Award" means an award (A) of the same type (e.g., performance-based restricted stock units) as the Replaced Award, (B) that has a value at least equal to the value of the Replaced Award, (C) that relates to publicly traded equity securities of the Company or its successor in the Change in Control or another entity that is affiliated with the Company or its successor following the Change in Control or is payable solely in cash, (D) if the Grantee holding the Replaced Award is subject to U.S. federal income tax under the Code, the tax consequences of which to such Grantee

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under the Code are not less favorable to such Grantee than the tax consequences of the Replaced Award, and (E) the other terms and conditions of which are not less favorable to the Grantee holding the Replaced Award than the terms and conditions of the Replaced Award (including the provisions that would apply in the event of a subsequent Change in Control). A Replacement Award may be granted only to the extent it does not result in the Replaced Award or Replacement Award failing to comply with or be exempt from Section 409A of the Code. Without limiting the generality of the foregoing, the Replacement Award may take the form of a continuation of the Replaced Award if the requirements of the two preceding sentences are satisfied. The determination of whether the conditions of this Section 4(d)(ii) are satisfied will be made by the Committee, as constituted immediately before the Change in Control, in its sole discretion.

(iii)If, upon receiving a Replacement Award, the Grantee's employment with the Company or a Subsidiary (or any of their successors) (as applicable, the "Successor") is subsequently terminated by the Grantee for Good Reason or by the Successor without Cause within a period of two years after the Change in Control, 100% of the Replacement Award will become nonforfeitable and payable with respect to the performance-based restricted stock units covered by such Replacement Award.

(iv)A termination by the Grantee for "Good Reason" means Grantee's termination of his or her employment with the Successor as a result of the occurrence of any of the following: (A) a change in the Grantee's principal location of employment that is greater than 50 miles from such location as of the date of this Agreement without the Grantee's consent; provided, however, that the Grantee hereby acknowledges that the Grantee may be required to engage in travel in connection with the performance of the Grantee's duties and that such travel shall not constitute a change in the Grantee's principal location of employment for purposes hereof; (B) a material diminution in the Grantee's base compensation; (C) a change in the Grantee's position with the Successor without the Grantee's consent such that there is a material diminution in the Grantee's authority, duties or responsibilities; or (D) any other action or inaction that constitutes a material breach by the Successor of the agreement, if any, under which the Grantee provides services to the Successor or its subsidiaries. Notwithstanding the foregoing, the Grantee's termination of the Grantee's employment with the Successor as a result of the occurrence of any of the foregoing shall not constitute a termination for "Good Reason" unless (X) the Grantee gives the Successor written notice of such occurrence within 90 days of such occurrence and such occurrence is not cured by the Successor within 30 days of the date on which such written notice is received by the Successor and (Y) the Grantee actually terminates his

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or her employment with the Successor prior to the 365th day following such occurrence.

(v)A termination by the Successor without "Cause" means the Successor's termination of the Grantee's employment with the Successor under circumstances that do not involve or relate to the occurrence of any of the following: (A) an act or acts of personal dishonesty taken by the Grantee and intended to result in substantial personal enrichment of the Grantee at the expense of the Company; (B) repeated failure by the Grantee to devote reasonable attention and time during normal business hours to the business and affairs of the Company or to use the Grantee's reasonable best efforts to perform faithfully and efficiently the responsibilities assigned to the Grantee (provided that such failure is demonstrated to be willful and deliberate on the Grantee's part and is not remedied in a reasonable period of time after receipt of written notice from the Company); or (C) the conviction of the Grantee of a felony.

(e)The PSUs shall be forfeited to the extent they fail to become nonforfeitable as of the Committee Determination Date and, except as otherwise provided in this Section 4, if the Grantee ceases to be employed by the Company or a Subsidiary at any time prior to such PSUs becoming nonforfeitable, or to the extent they are forfeited under Section 16 hereof.

5.Form and Time of Payment of Earned PSUs.

(a)Payment for the PSUs, after and to the extent they have become nonforfeitable, shall be made in the form of shares of Common Stock. Payment shall be made within 70 days following the date that the PSUs become nonforfeitable pursuant to Section 4 hereof.

(b)Except to the extent provided by Section 409A of the Code and permitted by the Committee, no Common Stock may be issued to the Grantee at a time earlier than otherwise expressly provided in this Agreement.

6.The Company's obligations to the Grantee with respect to the PSUs will be satisfied in full upon the issuance of Common Stock corresponding to such PSUs.

7.Dividend Equivalents, Voting, and Other Rights.

(a)The Grantee shall have no rights of ownership in the Common Stock underlying the PSUs and no right to vote the Common Stock underlying the PSUs until the date on which the shares of Common Stock underlying the PSUs are issued or transferred to the Grantee pursuant to Section 5 above.

(b)From and after the Date of Grant and until the earlier of (i) the time when the PSUs become nonforfeitable and are paid in accordance with Section

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5 hereof or (ii) the time when the Grantee's right to receive Common Stock in payment of the PSUs is forfeited in accordance with Section 4 hereof, on the date that the Company pays a cash dividend (if any) to holders of Common Stock generally, the Grantee shall become entitled to receive (subject to the following sentence) a number of additional whole PSUs determined by dividing (x) the product of (1) the dollar amount of the cash dividend paid per share of Common Stock on such date and (2) the total number of PSUs (including dividend equivalents) previously credited to the Grantee as of such date, by (y) the Market Value per Share on such date. Such dividend equivalents (if any) shall be subject to the same terms and conditions and shall be paid or forfeited in the same manner and at the same time as the PSUs to which the dividend equivalents were credited.

(c)The obligations of the Company under this Agreement will be merely that of an unfunded and unsecured promise of the Company to deliver shares of Common Stock in the future, and the rights of the Grantee will be no greater than that of an unsecured general creditor. No assets of the Company will be held or set aside as security for the obligations of the Company under this Agreement.

8.Adjustments. The PSUs and their terms under this Agreement are subject to mandatory adjustment under the terms of Section 11 of the Plan.

9.Withholding Taxes. To the extent that the Company is required to withhold federal, state, local or foreign taxes in connection with the delivery to the Grantee of Common Stock or any other payment to the Grantee or any other payment or vesting event under this Agreement, the Grantee hereby authorizes withholding from payroll and any other amounts payable to the Grantee, including amounts payable hereunder, and otherwise agrees to make adequate provision for, any sums required to satisfy such tax withholding obligations of the Company. The Company shall have no obligation to make delivery or payment hereunder until the tax withholding obligations of the Company have been satisfied by the Grantee. If all or any part of such withholding requirement be satisfied by retention by the Company of a portion of the Common Stock to be delivered to the Grantee or by delivering to the Company other shares of Common Stock held by the Grantee, the shares so retained shall be credited against such withholding requirement at the Market Value per Share of such Common Stock on the date of such delivery. In no event will the market value of the Common Stock to be withheld and/or delivered pursuant to this Section 9 to satisfy applicable withholding taxes exceed the minimum amount of taxes required to be withheld, unless otherwise agreed to by the Grantee, provided, however, that such amount shall not exceed the statutory maximum withholding rates.

10.Compliance With Law. The Company shall make reasonable efforts to comply with all applicable federal and state securities laws; provided, however, notwithstanding any other provision of the Plan and this Agreement, the Company shall not be obligated to issue any Common Stock pursuant to this Agreement if the issuance thereof would result in a violation of any such law.

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11.Compliance With Section 409A of the Code. To the extent applicable, it is intended that this Agreement and the Plan comply with the provisions of Section 409A of the Code. This Agreement and the Plan shall be administered in a manner consistent with this intent, and any provision that would cause this Agreement or the Plan to fail to satisfy Section 409A of the Code shall have no force or effect until amended to comply with Section 409A of the Code (which amendment may be retroactive to the extent permitted by Section 409A of the Code and may be made by the Company without the consent of the Grantee).

12.Interpretation. Any reference in this Agreement to Section 409A of the Code will also include any proposed, temporary or final regulations, or any other guidance, promulgated with respect to such Section by the U.S. Department of the Treasury or the Internal Revenue Service. Except as expressly provided in this Agreement, capitalized terms used herein will have the meaning ascribed to such terms in the Plan.

13.No Employment Rights. The grant of the PSUs under this Agreement to the Grantee is a voluntary, discretionary award being made on a one-time basis and it does not constitute a commitment to make any future awards. The grant of the PSUs and any payments made hereunder will not be considered salary or other compensation for purposes of any severance pay or similar allowance, except as otherwise required by law. Nothing contained in this Agreement shall confer upon the Grantee any right to be employed or remain employed by the Company or any of its Subsidiaries, nor limit or affect in any manner the right of the Company or any of its Subsidiaries to terminate the employment or adjust the compensation of the Grantee.

14.Relation to Other Benefits. Any economic or other benefit to the Grantee under this Agreement or the Plan shall not be taken into account in determining any benefits to which the Grantee may be entitled under any profit-sharing, retirement or other benefit or compensation plan maintained by the Company or any of its Subsidiaries and shall not affect the amount of any life insurance coverage available to any beneficiary under any life insurance plan covering employees of the Company or any of its Subsidiaries.

15.Amendments. Any amendment to the Plan shall be deemed to be an amendment to this Agreement to the extent that the amendment is applicable hereto; provided, however, that (a) no amendment shall adversely affect the rights of the Grantee under this Agreement without the Grantee's written consent, and (b) the Grantee's consent shall not be required to an amendment that is deemed necessary by the Company to ensure compliance with Section 409A of the Code.

16.Severability. In the event that one or more of the provisions of this Agreement shall be invalidated for any reason by a court of competent jurisdiction, any provision so invalidated shall be deemed to be separable from the other provisions hereof, and the remaining provisions hereof shall continue to be valid and fully enforceable.

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17.Relation to Plan. This Agreement is subject to the terms and conditions of the Plan. In the event of any inconsistency between the provisions of this Agreement and the Plan, the Plan shall govern. The Committee acting pursuant to the Plan, as constituted from time to time, shall, except as expressly provided otherwise herein or in the Plan, have the right to determine any questions which arise in connection with this Agreement. In addition, the PSUs shall be subject to the terms and conditions of the Company's clawback policy in effect on the Date of Grant as if such PSUs were "Incentive-Based Compensation" (as such term is defined in such clawback policy).

18.Successors and Assigns. Without limiting Section 3 hereof, the provisions of this Agreement shall inure to the benefit of, and be binding upon, the successors, administrators, heirs, legal representatives and assigns of the Grantee, and the successors and assigns of the Company.

19.Governing Law. This Agreement will be construed under the laws of the Commonwealth of Pennsylvania, without regard to its conflict of law provisions, and the parties consent and agree that the federal and state courts of the Commonwealth of Pennsylvania will have exclusive jurisdiction over any dispute relating to this Agreement.

20.Acknowledgement. The Grantee acknowledges that the Grantee (a) has received a copy of the Plan, (b) has had an opportunity to review the terms of this Agreement and the Plan, (c) understands the terms and conditions of this Agreement and the Plan and (d) agrees to such terms and conditions.

21.Counterparts. This Agreement may be executed in one or more counterparts, each of which shall be deemed to be an original but all of which together will constitute one and the same agreement.

[signature page follows]

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IN WITNESS WHEREOF, the Company has caused this Agreement to be executed on its behalf by its duly authorized officer and the Grantee has executed this Agreement, effective as of the day and year first above written.

HARSCO CORPORATION

By: /s/ F. Nicholas Grasberger III

Name: F. Nicholas Grasberger III

Title: Chairman, President and CEO

The undersigned hereby acknowledges receipt of an executed version of this Agreement and accepts the award of PSUs granted hereunder on the terms and conditions set forth herein and in the Plan (including the terms of the Non-Competition Agreement, attached hereto as Exhibit A).

GRANTEE

By: Name:

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EXHIBIT A

Non-Competition Agreement

1.Grant. Grantee acknowledges that Grantee has access to the confidential and proprietary trade secret information of Harsco Corporation, including its subsidiaries, joint ventures, and operating divisions (the "Company"), as further described below ("Confidential/Proprietary Trade Secret Information"). Further, Grantee acknowledges that Grantee derives significant value from the Company and from the Confidential/Proprietary Trade Secret Information provided during the term of employment with the Company, which enables Grantee to optimize the performance of the Company's performance and Grantee's own personal, professional, and financial benefit. In consideration of the grant described in the award agreement (the "Agreement") to which these terms, conditions and provisions (the "Non-Competition Agreement") are attached as an exhibit, Grantee agrees that, during Grantee's employment by the Company, and for a period of twelve (12) months after the cessation of such employment for any reason (both such periods collectively referred to as the "Restricted Period"), Grantee will not, directly or indirectly, engage in any of the following competitive activities:

(a)For Grantee or on behalf of any other corporation, business, partnership, individual, or other entity, directly or indirectly solicit, divert, contract with, or attempt to solicit, divert, or contract with, any customer with whom Grantee had Material Contact during the final two (2) years of Grantee's employment with the Company concerning any products or services that are similar to those that Grantee was responsible for or were otherwise involved with during Grantee's employment with the Company. For purposes of this Non-Competition Agreement, the Grantee will have had "Material Contact" with a customer if: (i) Grantee had business dealings with the customer on the Company's behalf; (ii) Grantee was responsible for supervising or coordinating the dealings between the Company and the customer; or (iii) Grantee obtained Confidential/Proprietary Trade Secret Information about the customer as a result of Grantee's association with the Company;

(b)Within the geographic territory where Grantee was employed by the Company, obtained knowledge of Confidential/Proprietary Trade Secret Information, or had contact with the Company's customers, become employed by or otherwise render services to (as a director, employee, contractor or consultant) or have any ownership interest in any business which is engaged in offering the same or similar products or services as, or otherwise competes with those Company, including its subsidiaries and operating unit(s) with which Grantee was employed or in any way involved during the last twelve (12) months of employment with the Company; or

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(c)(i) induce, offer, assist, encourage or suggest that another business or enterprise offer employment to or enter into a consulting arrangement with any employee, agent or representative of the Company or (ii) induce, offer, assist, encourage or suggest that any employee, agent or representative of the Company, including its subsidiaries and joint ventures, terminate his or her employment or business affiliation with the Company or accept employment with any other business or enterprise.

(d)Confidential/Proprietary Trade Secret Information.

(i)Grantee agrees to keep secret and confidential all Confidential/Proprietary Trade Secret Information (further described below) acquired by Grantee while employed by the Company or concerning the business and affairs of the Company, its vendors, its customers, and its affiliates (whether of a business, commercial or technological nature), and further agrees that Grantee will not disclose any such Confidential/Proprietary Trade Secret Information so acquired to any individual, partner, company, firm, corporation or other person or use the same in any manner other than in connection with the business and affairs of the Company and its affiliates. Except in the performance of services for the Company, the Grantee will not, for so long as the Confidential/Proprietary Trade Secret Information remains so designated under applicable law, use, disclose, reproduce, distribute, transmit, reverse engineer, decompile, disassemble, or transfer the Confidential/Proprietary Trade Secret Information or any portion thereof.

(ii)For purposes of this Non-Competition Agreement, "Confidential/Proprietary Trade Secret Information" includes all information of a confidential or proprietary nature that relates to the business, products, services, research or development of the Company, and its affiliates or their respective suppliers, distributors, customers, independent contractors or other business relations. Confidential/Proprietary Trade Secret Information also includes, but is not limited to, the following: (A) internal business information (including information relating to strategic and staffing plans and practices, business, training, financial, marketing, promotional and sales plans and practices, cost, rate and pricing structures, accounting and business methods and customer and supplier lists); (B) identities of, individual requirements of, specific contractual arrangements with and information about, the Company's suppliers, distributors, customers, independent contractors or other business relations and their confidential information; (C) trade secrets, copyrightable works and other confidential information (including ideas, formulas, recipes, compositions, inventions, innovations, improvements, developments, methods, know-how, manufacturing and production processes and techniques, research and development information, compilations of data and analyses, data and databases relating

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thereto, techniques, systems, records, manuals, documentation, models, drawings, specifications, designs, plans, proposals, reports and all similar or related information whether patentable or unpatentable and whether or not reduced to practice); (D) other intellectual property rights of the Company, or any of its affiliates; and (E) any other information that would constitute a trade secret under the Pennsylvania Uniform Trade Secrets Act, as amended from time to time (or any successor). The term "Confidential/Proprietary Trade Secret Information" also includes any information or data described above which the Company obtains from another party and which the Company treats as proprietary or designates as trade secrets, whether or not owned or developed by the Company.

(iii)All documents and materials supplied to Grantee or developed by Grantee in the course of, or as a result of Grantee's employment at the Company whether in hard copy, electronic format or otherwise shall be the sole property of the Company. Grantee will at any time upon the request of the Company and in any event promptly upon termination of Grantee's employment or relationship with the Company, but in any event no later than five (5) business days after such termination, deliver all such materials to the Company and will not retain any originals or copies of such materials, whether in hard copy form or as computerized and/or electronic records. Except to the extent approved by the Company or required by Grantee's bona fide job duties for the Company, the Grantee also agrees that Grantee will not copy or remove from the Company's place of business or the place of business of a customer of the Company, property or information belonging to the Company or the customer or entrusted to the Company or the customer. In addition, the Grantee agrees that Grantee will not provide any such materials to any competitor of or entity seeking to compete with the Company unless specifically approved in writing by the Company. Notwithstanding anything in paragraph 1(d)(3) of this Non-Competition Agreement to the contrary, if the Company needs to take legal action to secure such return delivery of such materials, Grantee shall be responsible for all legal fees, costs and expenses incurred by the Company in doing so.

(iv)Grantee understands that nothing contained in this Agreement limits Grantee’s ability to file a charge or complaint with any federal, state or local governmental agency or commission (“Government Agencies”). Grantee further understands that this Agreement does not limit Grantee’s ability to communicate with any Government Agencies or otherwise participate in any investigation or proceeding that may be commenced by any Government Agency including providing documents or other information without notice to the Company. This Agreement does not limit the Grantee’s right to receive an award for information provided to any Government Agencies.

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2.Subsequent Employment.

(a)Advise the Company of New Employment. In the event of a cessation of Grantee's employment with the Company, and during the Restricted Period described in paragraph 1 above, Grantee agrees to disclose to the Company, the name and address of any new employer or business affiliation within ten (10) calendar days of Grantee's accepting such position. In the event that Grantee fails to notify the Company of such new employment or business affiliation as required above, the Restricted Period will be extended by a period equal to the period of nondisclosure.

(b)Grantee's Ability to Earn Livelihood. Grantee acknowledges that, in the event of a cessation of Grantee's employment with the Company, for any reason and at any time, the provisions of paragraph 1 of this Non-Competition Agreement will not unreasonably restrict Grantee's ability to earn a living. Grantee and the Company acknowledge that Grantee's rights have been limited by this Non-Competition Agreement only to the extent reasonably necessary to protect the legitimate interests of the Company in its Confidential/Proprietary Trade Secret Information.

3.Enforcement. Grantee agrees that if Grantee violates the covenants and agreements set forth in this Non-Competition Agreement, the Company would suffer irreparable harm, and that such harm to the Company may be impossible to measure in monetary damages. Accordingly, in addition to any other remedies which the Company may have at law or in equity, the Company will have the right to have all obligations, undertakings, agreements, covenants and other provisions of this Non-Competition Agreement specifically performed by Grantee, and the Company will have the right to obtain preliminary and permanent injunctive relief to secure specific performance, and to prevent a breach or contemplated breach, of this Non- Competition Agreement. In such event, the Company will be entitled to an accounting and repayment of all profits, compensation, remunerations or benefits which Grantee or others, directly or indirectly, have realized or may realize as a result of, growing out of, or in conjunction with any violation of this Non-Competition Agreement. Such remedies will be an addition to and not in limitation of any injunctive relief or other rights or remedies to which the Company is or may be entitled at law or in equity. In the event that the Company obtains any requested relief in any action brought to enforce the terms of this Non-Competition Agreement through court proceedings, the Company will be entitled to reimbursement for all legal fees, costs and expenses incident to enforcement.

4.Severability. If any section, paragraph, term or provision of this Non-Competition Agreement, or the application thereof, is determined by a competent court or tribunal to be invalid or unenforceable, then the other parts of such section, paragraph, term or provision will not be affected thereby and will be given full force and effect without regard to the invalid or unenforceable portions, and the section, paragraph, term or provision of this Non-Competition Agreement will be deemed modified to the extent necessary to render it valid and enforceable.

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5.Miscellaneous.

(a)Employment.

(i)This Non-Competition Agreement does not constitute a guarantee of employment and termination of employment will not affect the enforceability of this Non-Competition Agreement.

(ii)Grantee agrees that if Grantee is transferred from the entity or division which was Grantee's employer at the time Grantee signed this Non-Competition Agreement to employment by another division or another company that is a subsidiary or affiliate of Harsco Corporation, and Grantee has not entered into a superseding agreement with the new employer covering the subject matter of this Non-Competition Agreement, then this Non-Competition Agreement will continue in effect and the Grantee's new employer will be termed "the Company" for all purposes hereunder and will have the right to enforce this Non-Competition Agreement as Grantee's employer. In the event of any subsequent transfer, Grantee's new employer will succeed to all rights under this Non- Competition Agreement so long as such employer will be Harsco Corporation or one of its subsidiaries or affiliates and so long as this Non-Competition Agreement has not been superseded.

(b)Headings. The headings contained in this Non-Competition Agreement are inserted for convenience of reference only, and will not be deemed to be a part of this Non-Competition Agreement for any purposes, and will not in any way define or affect the meaning, construction or scope of any of the provisions of this Non-Competition Agreement.

(c)Governing Law. This Non-Competition Agreement will be construed under the laws of the Commonwealth of Pennsylvania, without regard to its conflict of law provisions, and the parties consent and agree that the federal and state courts of the Commonwealth of Pennsylvania will have exclusive jurisdiction over any dispute relating to this Non- Competition Agreement.

(d)Supplemental Nature of this Non-Competition Agreement. The restrictions set forth in paragraph 1 of this Non-Competition Agreement will be in addition to any other such restrictive covenants agreed to through separate agreements, if any, between Grantee and the Company and will survive the exercise of the equity award evidenced by the Agreement.

(e)Waiver. The failure by the Company to enforce any right or remedy available to it under this Non-Competition Agreement will not be construed to be a waiver of such right or remedy with respect to any other prior, concurrent or subsequent breach or failure. No waiver of rights under this

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Non-Competition Agreement will be effective unless made in writing with specific reference to this Non-Competition Agreement.

(f)Notification. Grantee agreed that the Company may notify any third party about Grantee's obligations under this Non-Competition Agreement until such time as Grantee has performed all of Grantee's obligations hereunder. Upon the Company's request, Grantee agrees to provide the Company with information, including, but not limited to, supplying details of Grantee's subsequent employment, sufficient to verify that Grantee has not breached, or is not breaching, any covenant in this Non-Competition Agreement.

(g)Tolling. In the event that Grantee violates any of the covenants set forth in this Non-Competition Agreement, then the Company shall have the benefit of the full period of the covenants such that the covenants shall have the duration of the Restricted Period computed from the date Grantee ceased violation of the covenants, either by order of the court or otherwise.

(h)Acknowledgments.

(i)Grantee acknowledges and agrees that this Non-Competition Agreement is in consideration of, (A) the grant evidenced by the Agreement, (B) access to Confidential/Proprietary Trade Secret Information, as required by Grantee's job duties, and (C) access to important customer relationships and the associated customer goodwill of the Company.

(ii)Grantee acknowledges that he or she has carefully read and considered the provisions of this Non-Competition Agreement, and that this Non-Competition Agreement is reasonable as to time and scope and activities prohibited, given the Company's need to protect its interests and given the consideration provided to Grantee in the form of the grant evidenced by the Agreement.

(iii)Grantee acknowledges that he or she has had an opportunity to consult with an independent legal counsel of Grantee's choosing, and accept the grant contained in the Agreement and continuing employment on the terms set forth in this Non-Competition Agreement.

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EXHIBIT B

Additional Terms and Conditions for International Employees

TERMS AND CONDITIONS

This Exhibit B (this "Exhibit"), which is part of the Agreement, contains additional terms and conditions that govern the PSUs granted to the Grantee under the Plan if he or she resides outside the United States. The terms and conditions in Part A apply to all Grantees outside the United States. The country-specific terms and conditions and/or notifications in Part B will also apply to the Grantee if he or she resides in one of the countries listed below. Unless otherwise defined, capitalized terms used but not defined in this Exhibit have the meanings set forth in the Plan and/or the Agreement.

NOTIFICATIONS

This Exhibit also includes information regarding exchange controls and certain other issues of which the Grantee should be aware with respect to participation in the Plan. The information is based on the exchange control, securities and other laws in effect in the respective countries as of November 2017. Such laws are often complex and change frequently. As a result, the Company strongly recommends that the Grantee not rely on the information in this Exhibit as the only source of information relating to the consequences of his or her participation in the Plan because the information may be out of date at the time that the Grantee vests in the PSUs or sell shares of Common Stock acquired under the Plan.

In addition, the information contained herein is general in nature and may not apply to the Grantee's particular situation, and the Company is not in a position to assure the Grantee of a particular result. Accordingly, the Grantee is advised to seek appropriate professional advice as to how the relevant laws in his or her country may apply to the Grantee's situation.

Finally, if the Grantee is a citizen or resident, or is considered a resident, of a country other than the one in which he or she is currently working, or transferred employment after the PSUs were granted to him or her, the information contained herein may not be applicable. In addition, the Company shall, in its sole discretion, determine to what extent the additional terms and conditions included herein will apply to you under these circumstances.

A.ALL NON-U.S. COUNTRIES ADDITIONAL TERMS AND CONDITIONS

The following additional terms and conditions will apply to the Grantee if he or she resides in any country outside the United States.

Responsibility for Taxes. The following section replaces Section 9 of the Agreement in its entirety:

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The Grantee acknowledges that, regardless of any action taken by the Company or, if different, the Grantee's employer (the "Employer"), the ultimate liability for all income tax, social insurance, payroll tax, fringe benefits tax, payment on account or other tax-related items related to the Grantee's participation in the Plan and legally applicable to the Grantee ("Tax-Related Items") is and remains the Grantee's responsibility and may exceed the amount actually withheld by the Company or the Employer. The Grantee further acknowledges that the Company and/or the Employer (1) make no representations or undertakings regarding the treatment of any Tax-Related Items in connection with any aspect of the PSU, including, but not limited to, the grant, vesting or settlement of the PSUs, the subsequent sale of shares of Common Stock acquired pursuant to such settlement and the receipt of any dividends and/or any dividend equivalents; and (2) do not commit to and are under no obligation to structure the terms of the grant or any aspect of the PSUs to reduce or eliminate the Grantee's liability for Tax-Related Items or achieve any particular tax result. Further, if the Grantee is subject to Tax-Related Items in more than one jurisdiction between the Date of Grant and the date of any relevant taxable or tax withholding event, as applicable, the Grantee acknowledges that the Company and/or the Employer (or former employer, as applicable) may be required to withhold or account for Tax-Related Items in more than one jurisdiction.

Prior to any relevant taxable or tax withholding event, as applicable, the Grantee agrees to make adequate arrangements satisfactory to the Company and/or the Employer to satisfy all Tax- Related Items. In this regard, the Grantee authorizes the Company and/or the Employer to satisfy the obligations with regard to all Tax-Related Items by one or a combination of the following methods: (i) requiring payment by the Grantee to the Company, on demand, by cash, check or other method of payment as may be determined acceptable by the Company; or (ii) withholding from the Grantee's wages or other cash compensation paid to the Grantee by the Company and/or the Employer; or (iii) withholding from proceeds of the sale of shares of Common Stock acquired at vesting of the PSUs either through a voluntary sale or through a mandatory sale arranged by the Company (on the Grantee's behalf pursuant to this authorization) without further consent; or (iv) withholding shares of Common Stock issuable at vesting of the PSUs.

Depending on the withholding method, the Company and/or the Employer may withhold or account for Tax-Related Items by considering applicable minimum statutory withholding rates or other applicable withholding rates, including maximum applicable rates, in which case the Grantee will receive a refund of any over-withheld amount in cash and will have no entitlement to the Common Stock equivalent. If the obligation for Tax-Related Items is satisfied by withholding in shares of Common Stock, for tax purposes, the Grantee is deemed to have been issued the full number of shares of Common Stock subject to the vested PSUs, notwithstanding that a number of the shares of Common Stock are held back solely for the purpose of paying the Tax-Related Items.

Finally, the Grantee agrees to pay the Company or the Employer any amount of Tax-Related Items that the Company or the Employer may be required to withhold or account for as a result of the Grantee's participation in the Plan that cannot be satisfied

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by the means previously described. The Company may refuse to issue or deliver the shares or the proceeds of the sale of shares of Common Stock, if the Grantee fails to comply with the Grantee's obligations in connection with the Tax-Related Items.

Nature of Grant. In accepting the grant, the Grantee acknowledges, understands and agrees that: (1) the Plan is established voluntarily by the Company, it is discretionary in nature and it may be modified, amended, suspended or terminated by the Company at any time, to the extent permitted by the Plan; (2) all decisions with respect to future PSU or other grants, if any, will be at the sole discretion of the Company; (3) the Grantee is voluntarily participating in the Plan; (4) the PSU and the shares of Common Stock subject to the PSU are not intended to replace any pension rights or compensation; (5) the future value of the underlying shares of Common Stock is unknown, indeterminable and cannot be predicted with certainty; (6) no claim or entitlement to compensation or damages shall arise from forfeiture of the PSUs resulting from the termination of the Grantee's employment or other service relationship (for any reason whatsoever, whether or not later found to be invalid or in breach of employment laws in the jurisdiction where the Grantee is employed or the terms of the Grantee's employment agreement, if any), and in consideration of the grant of the PSUs to which the Grantee is otherwise not entitled, the Grantee irrevocably agrees never to institute any claim against the Company, any of its Subsidiaries or the Employer, waives the Grantee's ability, if any, to bring any such claim, and releases the Company, its Subsidiaries and the Employer from any such claim; if, notwithstanding the foregoing, any such claim is allowed by a court of competent jurisdiction, then, by participating in the Plan, the Grantee shall be deemed irrevocably to have agreed not to pursue such claim and agree to execute any and all documents necessary to request dismissal or withdrawal of such claim; (7) for purposes of the PSUs, the Grantee's employment or service relationship will be considered terminated as of the date the Grantee is no longer actively providing services to the Company or one of its Subsidiaries (regardless of the reason for such termination and whether or not later found to be invalid or in breach of employment laws in the jurisdiction where the Grantee is employed or providing services or the terms of the Grantee's employment or service agreement, if any) and unless otherwise expressly provided in these Terms and Conditions or determined by the Company, the Grantee's right to vest in the PSUs under the Plan, if any, will terminate as of such date and will not be extended by any notice period (e.g., the Grantee's period of service would not include any contractual notice period or any period of "garden leave" or similar period mandated under employment laws in the jurisdiction where the Grantee is employed or providing services or the terms of the Grantee's employment or service agreement, if any); the Company shall have the exclusive discretion to determine when the Grantee is no longer actively providing services for purposes of the Grantee's PSU grant (including whether the Grantee may still be considered to be providing services while on an approved leave of absence); (8) unless otherwise provided in the Plan or by the Company in its discretion, the PSUs and the benefits evidenced by these Terms and Conditions do not create any entitlement to have the PSUs or any such benefits transferred to, or assumed by, another company nor to be exchanged, cashed out or substituted for, in connection with any corporate transaction affecting the shares of the Company; (9) the PSUs and the shares of Common Stock subject to the PSUs, and the income and value of same, are not part of normal or expected compensation for any purpose, including, without limitation,

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calculating severance, resignation, termination, redundancy, dismissal, end-of-service payments, bonuses, long-service awards, pension or retirement or welfare benefits or similar payments; and (10) the Grantee acknowledges and agrees that neither the Company, the Employer nor any subsidiary or affiliate of the Company shall be liable for any foreign exchange rate fluctuation between the Grantee's local currency and the United States Dollar that may affect the value of the PSUs or of any amounts due to the Grantee pursuant to the settlement of the PSUs or the subsequent sale of any shares of Common Stock acquired upon settlement.

No Advice Regarding Grant. The Company is not providing any tax, legal or financial advice, nor is the Company making any recommendations regarding the Grantee's participation in the Plan, or the Grantee's acquisition or sale of the underlying shares of Common Stock. The Grantee is hereby advised to consult with the Grantee's own personal tax, legal and financial advisors regarding the Grantee's participation in the Plan before taking any action related to the Plan.

Data Privacy for Grantees not based in the European Economic Area or the United Kingdom

The Grantee hereby explicitly and unambiguously consents to the collection, use and transfer, in electronic or other form, including email, of the Grantee's personal data as described in the Agreement and any other PSU grant materials ("Data") by and among, as applicable, the Employer, the Company and its subsidiaries and affiliates for the exclusive purpose of implementing, administering and managing the Grantee's participation in the Plan.

The Grantee understands that the Company and the Employer may hold certain personal information about the Grantee, including, but not limited to, the Grantee's name, home address and telephone number, date of birth, social insurance number or other identification number, salary, nationality, job title, any shares of stock or directorships held in the Company, details of all PSUs or any other entitlement to shares of stock awarded, canceled, exercised, vested, unvested or outstanding in the Grantee's favor, for the exclusive purpose of implementing, administering and managing the Plan.

The Grantee understands that Data will be transferred to the Company's stock transfer agent and/or broker, or such other stock plan service provider as may be selected by the Company in the future, which is assisting the Company with the implementation, administration and management of the Plan. The Grantee understands that the recipients of the Data may be located in the United States or elsewhere (including outside the EEA), and that the recipients' country (e.g., the United States) may have different data privacy laws and protections than the Grantee's country. The Grantee understands that the Grantee may request a list with the names and addresses of any potential recipients of the Data by contacting the Grantee's local human resources representative. The Grantee authorizes the Company, the Company's stock transfer agent and/or broker, and any other possible recipients which may assist the Company (presently or in the future) with implementing, administering and managing the Plan to receive, possess, use, retain and transfer the Data, in electronic or other form, for the sole purpose of implementing, administering and managing the Grantee's participation in the Plan. The Grantee understands that Data will be held only as long as is necessary to implement, administer and manage the Grantee's participation in the Plan. The

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Grantee understands that the Grantee may, at any time, view Data, request additional information about the storage and processing of Data, require any necessary amendments to Data or refuse or withdraw the consents herein, in any case without cost, by contacting in writing the Grantee's local human resources representative. Further, the Grantee understands that the Grantee is providing the consents herein on a purely voluntary basis. If the Grantee does not consent, or if the Grantee later seeks to revoke the Grantee's consent, the Grantee's employment status or service and career with the Employer will not be adversely affected; the only adverse consequence of refusing or withdrawing the Grantee's consent is that the Company would not be able to grant the Grantee PSUs or other equity awards or administer or maintain such awards. Therefore, the Grantee understands that refusing or withdrawing the Grantee's consent may affect the Grantee's ability to participate in the Plan. For more information on the consequences of the Grantee's refusal to consent or withdrawal of consent, the Grantee understands that the Grantee may contact the Grantee's local human resources representative.

Data Privacy for Grantees based in the European Economic Area (including the United Kingdom)

The Company and its subsidiaries and affiliates will process the data of the Grantee in accordance with (i) the applicable data privacy policy or policies adopted by the Company or its subsidiaries and affiliates; and (ii) the data privacy notice(s) provided to the Grantee covering the processing of the Grantee's data in connection with the Plan.

The Grantee understands and acknowledges that the processing of their data by the Company and its subsidiaries and affiliates in relation to the operation of the Plan is necessaryfor (i) the performance of the Agreement; (ii) to comply with any legal obligation in relation to the operation of the Plan; and (iii) to account for any tax and duties in relation to the Plan.

Governing Law and Venue. The PSU grant and the provisions of the Agreement are governed by, and subject to, the internal substantive laws of the State of Delaware, United States of America (with the exception of its conflict of law provisions).

For purposes of litigating any dispute that arises directly or indirectly from the relationship of the parties evidenced by this grant or the Agreement, the parties hereby submit to and consent to the exclusive jurisdiction of the Commonwealth of Pennsylvania in the United States of America and agree that such litigation shall be conducted only in the courts of Cumberland County, the Commonwealth of Pennsylvania, or the federal courts for the United States of America for the Middle District of Pennsylvania, and no other courts, where this grant is made and/or to be performed.

Compliance with Law. The following section supplements Section 10 of the Agreement: Notwithstanding any other provision of the Plan or the Agreement, unless there is an available exemption from any registration, qualification or other legal requirement applicable to the shares of Common Stock, the Company shall not be required to deliver any shares issuable upon settlement of the PSUs prior to the completion of any registration or qualification of the shares under any local, state,

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federal or foreign securities or exchange control law or under rulings or regulations of the U.S. Securities and Exchange Commission ("SEC") or of any other governmental regulatory body, or prior to obtaining any approval or other clearance from any local, state, federal or foreign governmental agency, which registration, qualification or approval the Company shall, in its absolute discretion, deem necessary or advisable. The Grantee understands that the Company is under no obligation to register or qualify the shares with the SEC or any state or foreign securities commission or to seek approval or clearance from any governmental authority for the issuance or sale of the shares. Further, the Grantee agrees that Company shall have unilateral authority to amend the Plan and the Agreement without the Grantee's consent to the extent necessary to comply with securities or other laws applicable to issuance of shares.

Language. If the Grantee has received the Agreement or any other document related to the Plan translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control.

Electronic Delivery and Acceptance. The Company may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means, including email. The Grantee hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through an on-line or electronic system established and maintained by the Company or a third party designated by the Company.

Severability. The provisions of these Terms and Conditions are severable and if any one or more provisions are determined to be illegal or otherwise unenforceable, in whole or in part, the remaining provisions shall nevertheless be binding and enforceable.

Imposition of Other Requirements. Subject to Section 15 of the Agreement, the Company reserves the right to impose other requirements on the Grantee's participation in the Plan, on the PSUs and on any shares of Common Stock acquired under the Plan, to the extent the Company determines it is necessary or advisable for legal or administrative reasons, and to require the Grantee to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing.

Waiver. The Grantee acknowledges that a waiver by the Company of breach of any provision of these Terms and Conditions shall not operate or be construed as a waiver of any other provision of these Terms and Conditions, or of any subsequent breach by the Grantee or any other Participant.

B.COUNTRY-SPECIFIC ADDITIONAL TERMS AND CONDITIONS AND NOTIFICATIONS

AUSTRALIA

TERMS AND CONDITIONS

Settlement of PSUs. Notwithstanding anything to the contrary in the Agreement, upon the vesting of the PSUs, the Grantee will receive a cash payment in an amount equal to

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the value of the shares of Common Stock underlying the vested PSUs on the vesting date. As long as the Grantee resides in Australia, he or she may not receive or hold shares of Common Stock in connection with the PSUs under the Plan. Accordingly, any provisions in the Agreement referring to issuance of shares of Common Stock shall not be applicable to the Grantee as long as he or she resides in Australia.

NOTIFICATIONS

Exchange Control Information. Exchange control reporting is required for cash transactions exceeding $10,000 and international fund transfers. The Australian bank assisting with the transaction will file the report.

BELGIUM

NOTIFICATIONS

Tax Reporting Information. Grantee is required to report any bank accounts opened and maintained outside of Belgium on his or her annual Belgian tax return.

BRAZIL

TERMS AND CONDITIONS

Compliance with Law. By accepting the PSUs, the Grantee acknowledges that he or she agrees to comply with applicable Brazilian laws and pay any and all applicable taxes associated with the vesting of the PSUs, the receipt of any dividends, and the sale of shares of Common Stock acquired under the Plan.

NOTIFICATIONS

Exchange Control Information. If the Grantee is resident or domiciled in Brazil, he or she will be required to submit annually a declaration of assets and rights held outside of Brazil to the Central Bank of Brazil if the aggregate value of such assets and rights is equal to or greater than US $100,000. Assets and rights that must be reported include shares of Common Stock.

CANADA

TERMS AND CONDITIONS

Settlement. Notwithstanding any discretion in the Plan or anything to the contrary in this Agreement, this grant of RSUs, along with any dividend equivalent amounts otherwise payable under Section 6 of this Agreement, shall only be settled in newly-issued shares of Common Stock, and without the use of any form of employee benefit trust.This provision is without prejudice to the application of Section 8 of this Agreement, provided the Grantee has been given a reasonably opportunity to pay (either out his/her own funds or via payroll deduction) the relevant withholding tax amounts.

Continuous Employment.The following provision supplements this Agreement and the Plan:

A Grantee’s “continuous employment” (or substantially similar term) with the Company or a Subsidiary, as the case may be, will be deemed to have been terminated (regardless of the reason for the termination and whether or not later found to be invalid or in breach of applicable law in the jurisdiction where Grantee is rendering services or the terms of Grantee’s

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employment or other service agreement, if any) on the date that is the earliest of (1) the termination date of Grantee’s status as an employee, (2) the date Grantee receives written notice of termination of Grantee’s status as an employee or service provider, or (3) the date Grantee is no longer actively employed by or actively providing services to the Company or any of its Subsidiaries regardless of any notice period or period of pay in lieu of such notice mandated under applicable law (including, but not limited to, statutory law, regulatory law and/or common law) in the jurisdiction where Grantee is employed or rendering service or the terms of Grantee’s employment or other service agreement, if any.

Notwithstanding the foregoing, if applicable employment or labour standards legislation explicitly requires continued participation in the Plan during a statutory notice period, Grantee acknowledges that his or her right to participate in the Plan, if any, will terminate effective as of the last day of Grantee’s minimum statutory notice period, but Grantee will not earn or be entitled to pro-rata vesting if the vesting date falls after the end of Grantee’s statutory notice period, nor will Grantee be entitled to any compensation for lost vesting.

Cause. For purposes of this Agreement and the Plan, “Cause” means the occurrence of any of the following: (A) an act or acts of personal dishonesty taken by the Grantee and intended to result in substantial personal enrichment of the Grantee at the expense of the Company; (B) repeated failure by the Grantee to devote reasonable attention and time during normal business hours to the business and affairs of the Company or to use the Grantee's reasonable best efforts to perform faithfully and efficiently the responsibilities assigned to the Grantee (provided that such failure is demonstrated to be willful and deliberate on the Grantee's part and is not remedied in a reasonable period of time after receipt of written notice from the Company); or (C) the conviction of the Grantee of a felony, indictable offence, or summary conviction offence that is related to the employment or intended employment of the Grantee; provided, however, that if the Grantee is employed in the Province of Ontario, “Cause” instead means willful misconduct, disobedience or willful neglect of duty that is not trivial and has not been condoned by the Company or a Subsidiary.

NOTIFICATIONS

Securities Law Information.

Your participation in the Plan is voluntary, and you acknowledge and agree that you have not been induced to enter into this Agreement or acquire any RSUs or Common Stock by expectation of employment, engagement or appointment or continued employment, engagement or appointment.

You understand that you are permitted to sell Common Stock acquired pursuant to the Plan, provided that the Company is a “foreign issuer” that is not a public company in any jurisdiction of Canada and the sale of the Common Stock acquired pursuant to the Plan takes place: (i) through an exchange, or a market, outside of Canada on the distribution date; or (ii) to a person or company outside of Canada. For purposes hereof, in addition to not being a reporting issuer in any jurisdiction of Canada, a “foreign issuer” is an issuer that: (i) is not incorporated or existing pursuant to the laws of Canada or any jurisdiction of Canada; (ii) does not have its head office in Canada; and (iii) does not have a majority of its executive officers or directors ordinarily resident in Canada. If any designated broker is appointed under the Plan, you shall sell such securities through the designated broker.

For Grantees in the Province of Ontario

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Non-Competition Agreement. Section 1(b) of the Non-Competition Agreement does not apply to non-Executive Grantees employed in the Province of Ontario, where “Executive” has the meaning given to it in the Working for Workers Act (Ontario).

Foreign Asset/Account Reporting Information.Grantee is required to report any foreign specified property on form T1135 (Foreign Income Verification Statement) if the total value of the “foreign specified property” exceeds C$100,000 at any time in the year.Foreign specified property includes Common Stock acquired under the Plan, and may include the RSUs.The RSUs must be reported (generally at a nil cost) if the $100,000 cost threshold is exceeded because of other foreign property Grantee holds.If Common Stock is acquired, its cost generally is the adjusted cost base (“ACB”) of the Common Stock.The ACB ordinarily would equal the fair market value of the Common Stock at the time of acquisition, but if Grantee owns other Common Stock, this ACB may have to be averaged with the ACB of the other Common Stock.The form must be filed by April 30 following the taxation year in question.Grantee should consult with his or her personal legal and tax advisor, as the case may be, to ensure compliance with applicable reporting obligations.

CHINA

TERMS AND CONDITIONS

Settlement of PSUs. Notwithstanding anything to the contrary in the Agreement, due to local regulatory requirements, upon the vesting of the PSUs, the Grantee will receive a cash payment in China via the Company's local Chinese payroll in an amount equal to the value of the shares of Common Stock underlying the vested PSUs on the vesting date. As long as the Grantee resides in China, he or she may not receive or hold shares of Common Stock in connection with the PSUs under the Plan. Accordingly, any provisions in the Agreement referring to issuance of shares of Common Stock shall not be applicable to the Grantee as long as he or she resides in China.

FRANCE

TERMS AND CONDITIONS

Consent to Receive Information in English. By accepting the grant of the PSUs, the Grantee confirms having read and understood the Plan and the Agreement, which were provided in the English language. The Grantee accepts the terms of those documents accordingly.

En acceptant cette attribution gratuite d'actions, le Grantee confirme avoir lu et compris le Plan et ce Contrat, incluant tous leurs termes et conditions, qui ont été transmis en langueanglaise. Le Grantee accepte les dispositions de ces documents en connaissance de cause.

NOTIFICATIONS

Tax Notification. The PSUs are not intended to be French tax-qualified. Please be aware that the Company intends that any outstanding PSUs granted to you pursuant to the 1995 Executive Incentive Compensation Plan Sub-plan for Restricted Stock Units Granted to Participants in France will continue to meet the requirements for qualified

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status under French law; therefore, different terms and conditions will apply to such outstanding PSUs. Please refer to the Restricted Stock Unit Agreement for Employees in France applicable to your grant for further details.

Exchange Control Notification. The Grantee may hold shares of Common Stock acquired under the Plan outside of France provided that he or she declares all foreign accounts (including any accounts that were opened or closed during the tax year) on his or her annual French income tax return.

GERMANY

TERMS AND CONDITIONS

Parties to the Agreement. The Agreement is exclusively concluded between Harsco Corporation and the Grantee. The local Harsco entity employing the Grantee is not in any way party to the Agreement or entitled/committed hereby.

Vesting of PSUs. Notwithstanding anything to the contrary in the Agreement or in the Plan, the Grantee shall be considered "Disabled" for the purposes of this Agreement, if the Grantee's employment contract ends as a consequence of the Grantee being granted a permanent statutory pension for full occupational disability (unbefristete Rente wegen voller Erwerbsminderung) by the competent authorities.

Non-Competition Agreement. Notwithstanding anything to the contrary in the Non-Competition Agreement, it is exclusively concluded between Harsco Corporation and the Grantee. The employer of the Grantee is not in any way party to the Non-Competition Agreement or entitled/committed hereby. The Non-Competition Agreement does not affect in any way a separate non-competition agreement concluded between the Grantee and his/her employer.

INDIA

TERMS AND CONDITIONS

The Grantee hereby agrees that it shall hold the shares of the Common Stock pursuant to this Agreement and the Plan, at all times in accordance with the applicable laws in India, including but not limited to the (Indian) Foreign Exchange Management (Transfer or Issue of Any Foreign Security) Regulations, 2004 (and as amended or replaced), relevant master circulars, directions, notifications issued in this regard by the Reserve Bank of India from time to time and shall carry out the necessary reporting with the Reserve Bank of India at all stages of granting and vesting, if and as may be required. The Grantee agrees to indemnify the Company and/or Subsidiary of the Company with respect to any non-compliance and/or non-adherence by the Grantee of any of the applicable laws in India arising out of holding of the shares of the Common Stock by the Grantee.

The Grantee shall declare the holding of shares of the Common Stock, if and as may be necessary, in its income for taxation purposes and agrees to indemnify the Company and/or Subsidiary of the Company with respect to any and all taxes that it shall be obligated to pay with respect to the shares of the Common Stock such as including but

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not limited to income tax, capital gain taxes etc., under this Agreement and which may arise as a result of the sale of the shares of the Common Stock and the transactions contemplated hereunder.

LUXEMBOURG

NOTIFICATIONS

Exchange Control Information. Grantee understands that Grantee is required to report any inward remittances of funds to the Banque Centrale de Luxembourg and/or the Service Central de la Statistique et des Études Économiques within 15 working days following the month during which the transaction occurred unless such payment is reported by a Luxembourg-resident financial institution.

THE NETHERLANDS

TERMS AND CONDITIONS

Non-Competition Agreement. The non-competition agreement entered into between the Company and the Grantee shall be in addition to any non-compete arrangements between the Grantee and his or her employer.

MALAYSIA

Tax Reporting Information.By accepting the PSUs, the Grantee acknowledges that he or she agrees to comply with applicable Malaysian laws and pay any and all applicable taxes associated with the vesting of the PSUs, The Grantee is required to ensure that the local Harsco entity employing the Grantee reports such share benefit to the Malaysian Inland Revenue Board.

SWITZERLAND

TERMS AND CONDITIONS

Vesting: With the acceptance of a Grant, the Grantee expressly acknowledges that any RSU, PSU and/or SAR shall not give the Grantee any right or entitlement until such Grant is fully vested. The Grant remains fully discretionary until full vesting.

Continuous Employment: In Switzerland, "continuously employed" (or substantially similar term) means the absence of any interruption or termination (issuance of termination notice) of the Grantee's employment with the Company or with a Subsidiary of the Company. Continuous employment shall not be considered interrupted or terminated in the case of sick leave, military leave or any other leave of absence approved by the Company for which compensation needs to be paid by the Company or salary replacement benefits are granted by any insurance or in the case of transfers between locations of the Company and its Subsidiaries. For the avoidance of any doubt, continuous employment ends in any case with the end of the employment, even if any salary replacement benefits continue to be paid by any insurance, pension scheme or social security.

Retirement: For the purpose of the Plan, only a retirement under the rules and conditions of the Swiss pension scheme of the Subsidiary employing the Grantee shall

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qualify as retirement for the purpose of vesting of RSU, PSU or termination of SAR, and only if such retirements is (A) at age 62 or older while employed by the Company or any of its Subsidiaries; or (B) at or after such time as the Grantee's age (minimum of age 55), plus full years of continuous employment by the Company or any of its Subsidiaries, equals 75.

Disability: For purposes of the Plan, the Grantee shall be considered "Disabled" if the Grantee is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or qualifies as permanent full disability under the applicable Swiss social security and/or pension laws.

Non-Competition Agreement: For the avoidance of any doubt, any non-competition agreement entered into between the Grantee and the Company in connection with the Plan and grants thereunder shall be in addition to any non-competition agreement agreed between the Grantee and the employing Subsidiary and shall not replace such non-competition agreement.

NOTIFICATIONS

Exchange Control Notification. The Grantee may hold shares of Common Stock acquired under the Plan outside of Switzerland provided that he or she declares all foreign accounts (including any accounts that were opened or closed during the tax year) on his or her annual Swiss tax declaration.

UNITED ARAB EMIRATES

NOTIFICATIONS

Securities Law Notice. PSUs under the Plan are granted only to select executive officers and other employees of the Company and its subsidiaries for the purpose of providing such eligible persons with incentives and rewards for performance. The Agreement, including this Exhibit, the Plan and any documents the Grantee may receive in connection with the PSUs are intended for distribution to such eligible persons and must not be delivered to, or relied on, by any other person.

The Emirates Securities and Commodities Authority, the Central Bank, the Ministry of Economy and the Dubai Department of Economic Development do not have any responsibility for reviewing or verifying any documents in connection with the Plan nor have they reviewed or approved the Plan or the Agreement. The securities to which this statement relates may be illiquid and/or subject to restrictions on their resale. The Grantee and/or prospective purchasers of the securities offered should conduct their own due diligence on the securities.

If the Grantee does not understand the contents of the Agreement, including this Exhibit, or the Plan, the Grantee should consult an authorized financial adviser.

UNITED KINGDOM

TERMS AND CONDITIONS

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1.Sub-Plan. The terms of the U.K. Sub-plan apply to the PSUs.

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EXHIBIT C

Statement of Management Objectives

This Statement of Management Objectives applies to the performance-based Restricted Stock Units granted to the Grantee on the Date of Grant and applies with respect to the Performance Share Units Agreement between the Company and the Grantee (the "Agreement"). Capitalized terms used in the Agreement that are not specifically defined in this Statement of Management Objectives have the meanings assigned to them in the Agreement or in the Plan, as applicable.

Section 1. Definitions. For purposes hereof:

•"Peer Group" means S&P600® Industrials Index as constituted on the first day of the Performance Period.

•"Relative Total Stockholder Return" or "RTSR" means the percentile rank of the Company's Total Stockholder Return among the Total Stockholder Returns of all members of the Peer Group, ranked in descending order, at the end of the Performance Period.

•"Total Stockholder Return" means, with respect to the Common Stock and the common stock of each of the members of the Peer Group, a rate of return reflecting stock price appreciation, plus the reinvestment of dividends in additional shares of stock on the ex-dividend date, from the beginning of the Performance Period through the end of the Performance Period. For purposes of calculating Total Stockholder Return for each of the Company and the members of the Peer Group, the beginning stock price will be based on the average closing stock price for the 30 calendar days immediately preceding January 1, 2022 on the principal stock exchange on which the stock then traded and the ending stock price will be based on the average closing stock price for the 30 calendar days immediately preceding January 1, 2025 on the principal stock exchange on which the stock then trades.

Section 2. Performance Matrix.

From 0% to 200% of the PSUs will be earned based on achievement of the Management Objectives measured by RTSR during the Performance Period as follows:

Performance Level	Relative Total Stockholder Return	PSUs Earned
Below Threshold	Ranked below 25th percentile	0%
Threshold	Ranked at 25th percentile	25%
Target	Ranked at 50th percentile	100%
Maximum	Ranked at or above 75th percentile	200%

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Notwithstanding anything in this Statement of Management Objectives or the Agreement to the contrary, if Total Stockholder Return for the Company for the Performance Period is negative the maximum amount of PSUs earned shall be 100% of the PSUs.

Section 3. Number of PSUs Earned. Following the Performance Period, on the Committee Determination Date, the Committee shall determine whether and to what extent the goals relating to the Management Objectives have been satisfied for the Performance Period and shall determine the number of PSUs that shall become nonforfeitable hereunder and under the Agreement on the basis of the following:

•Below Threshold. If, upon the conclusion of the Performance Period, RTSR for the Performance Period falls below the threshold level, as set forth in the Performance Matrix, no PSUs shall become nonforfeitable.

•Threshold. If, upon the conclusion of the Performance Period, RTSR for the Performance Period equals the threshold level, as set forth in the Performance Matrix, 25% of the PSUs (rounded down to the nearest whole number of PSUs) shall become nonforfeitable.

•Between Threshold and Target. If, upon the conclusion of the Performance Period, RTSR for the Performance Period exceeds the threshold level, but is less than the target level, as set forth in the Performance Matrix, a percentage between 25% and 100% (determined on the basis of straight-line mathematical interpolation) of the PSUs (rounded down to the nearest whole number of PSUs) shall become nonforfeitable.

•Target. If, upon the conclusion of the Performance Period, RTSR for the Performance Period equals the target level, as set forth in the Performance Matrix, 100% of the PSUs shall become nonforfeitable.

•Between Target and Maximum. If, upon the conclusion of the Performance Period, RTSR for the Performance Period exceeds the target level, but is less than the maximum level, as set forth in the Performance Matrix, a percentage between 100% and 200% (determined on the basis of straight-line mathematical interpolation) of the PSUs (rounded down to the nearest whole number of PSUs) shall become nonforfeitable.

•Equals or Exceeds Maximum. If, upon the conclusion of the Performance Period, RTSR for the Performance Period equals or exceeds the maximum level, as set forth in the Performance Matrix, 200% of the PSUs shall become nonforfeitable.

Before all or any portion of any Qualified Performance-Based Award of PSUs shall become nonforfeitable or paid in accordance with this Statement of Management Objectives or the Agreement, the Committee shall determine in writing that the Management Objectives have been satisfied.

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EX-10.3

Exhibit 10.3

HARSCO CORPORATION

STOCK APPRECIATION RIGHTS AGREEMENT (FORM)

This STOCK APPRECIATION RIGHTS AGREEMENT (this "Agreement") is made as of March 4, 2022, by and between Harsco Corporation, a Delaware corporation and [Participant Name:First Name Last Name] (the "Grantee").

1.Certain Definitions. Capitalized terms used, but not otherwise defined, in this Agreement will have the meanings given to such terms in the Company's 2013 Equity and Incentive Compensation Plan, as amended by Amendment No. 1 to the 2013 Equity and Incentive Compensation Plan (the "Plan"). In addition, for purposes of this Agreement, "Base Price" means [Price:Option Price] , and “Date of Grant” means March 4, 2022.

2.Grant of SARs. Subject to and upon the terms, conditions and restrictions set forth in this Agreement, including, without limitation, Exhibit Aattached hereto (the "Non-Competition Agreement"), any additional terms and conditions for the Grantee's country (Grantees outside the United States only) set forth in the attached Exhibit Bwhich forms part of this Agreement, and in the Plan the Company grants to the Grantee, as of the Date of Grant, [Granted:Options Granted] Free-Standing Appreciation Rights ("SARs"). The SARs represent the right of the Grantee to receive shares of Common Stock in an amount equal to 100% of the Spread on the date on which the SARs are exercised. Notwithstanding anything in this Section 2or otherwise in this Agreement to the contrary, the Grantee acknowledges and agrees to be bound by the restrictive covenant terms, conditions and provisions in the Non-Competition Agreement as a "Grantee" as referred to therein.

3.Vesting of SARs.

(a)Subject to the terms and conditions of this Agreement and the Plan, the SARs covered by this Agreement shall become exercisable as described in this Section. One-third of the SARs shall become exercisable on the first anniversary of the Date of Grant if the Grantee remains in the continuous employ of the Company or one of its Subsidiaries from the Date of Grant through such first anniversary. An additional one-third of the SARs shall become exercisable on each subsequent anniversary of the Date of Grant, through the third anniversary of the Date of Grant, when the remaining SARs shall have become exercisable, if the Grantee remains in the continuous employ of the Company or one of its Subsidiaries from the Date of Grant through each such anniversary.For purposes of this Agreement, "continuous employ" (or substantially similar term) means the absence of any interruption or termination of the Grantee's employment with the Company or with a Subsidiary of the Company. Continuous employment shall not be considered interrupted or terminated in the case of sick leave, military leave or any other leave of absence approved by the Company or in the case of transfers between locations of the Company and its Subsidiaries.

(b)Notwithstanding Section 3(a)above, the SARs granted hereby shall become immediately exercisable in full if at any time during the continuous employment of the Grantee with the Company or a Subsidiary of the Company and prior to the termination of the SARs any of the following events occur:

010-8970-2122/1

(i)the Grantee's death or becoming Disabled while the Grantee is continuously employed by the Company or any of its Subsidiaries; or

(ii)the Grantee's retirement (A) at age 62 or older while continuously employed by the Company or any of its Subsidiaries; or (B) at or after such time as the Grantee's age (minimum of age 55), plus full years of continuous employment by the Company or any of its Subsidiaries, equals 75.

(c)For purposes of this Section 3, the Grantee shall be considered "Disabled" if the Grantee is: (i) unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than twelve months, or (ii) by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than twelve months, receiving income replacement benefits for a period of not less than three months under an accident and health plan covering employees of the Company.

(d)(i)Notwithstanding Section 3(a)above, if at any time before the third anniversary of the Date of Grant or the termination of the SARs, and while the Grantee is continuously employed by the Company or a Subsidiary, a Change in Control occurs, then the SARs will become fully exercisable, except to the extent that a Replacement Award is provided to the Grantee in accordance with Section 3(d)(ii)to continue, replace or assume the SARs covered by this Agreement (the "Replaced Award").

(ii)For purposes of this Agreement, a "Replacement Award" means an award (A) of the same type (e.g., time-based stock appreciation rights) as the Replaced Award, (B) that has a value at least equal to the value of the Replaced Award, (C) that relates to publicly traded equity securities of the Company or its successor in the Change in Control or another entity that is affiliated with the Company or its successor following the Change in Control or is payable solely in cash, (D) if the Grantee holding the Replaced Award is subject to U.S. federal income tax under the Code, the tax consequences of which to such Grantee under the Code are not less favorable to such Grantee than the tax consequences of the Replaced Award, and (E) the other terms and conditions of which are not less favorable to the Grantee holding the Replaced Award than the terms and conditions of the Replaced Award (including the provisions that would apply in the event of a subsequent Change in Control). A Replacement Award may be granted only to the extent it does not result in the Replaced Award or Replacement Award failing to comply with or be exempt from Section 409A of the Code. Without limiting the generality of the foregoing, the Replacement Award may take the form of a continuation of the Replaced Award if the requirements of the two preceding sentences are satisfied. The determination of whether the conditions of this Section 3(d)(ii)are satisfied will be made by the Committee, as constituted immediately before the Change in Control, in its sole discretion.

(iii)If, upon receiving a Replacement Award, the Grantee's employment with the Company or a Subsidiary (or any of their successors) (as applicable, the "Successor") is subsequently terminated by the Grantee for Good Reason or by the Successor without Cause within a

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period of two years after the Change in Control, 100% of the Replacement Award will become exercisable with respect to the time- based stock appreciation rights covered by such Replacement Award.

(iv)A termination by the Grantee for "Good Reason" means Grantee's termination of his or her employment with the Successor as a result of the occurrence of any of the following: (A) a change in the Grantee's principal location of employment that is greater than 50 miles from such location as of the date of this Agreement without the Grantee's consent; provided, however, that the Grantee hereby acknowledges that the Grantee may be required to engage in travel in connection with the performance of the Grantee's duties and that such travel shall not constitute a change in the Grantee's principal location of employment for purposes hereof; (B) a material diminution in the Grantee's base compensation; (C) a change in the Grantee's position with the Successor without the Grantee's consent such that there is a material diminution in the Grantee's authority, duties or responsibilities; or (D) any other action or inaction that constitutes a material breach by the Successor of the agreement, if any, under which the Grantee provides services to the Successor or its subsidiaries. Notwithstanding the foregoing, the Grantee's termination of the Grantee's employment with the Successor as a result of the occurrence of any of the foregoing shall not constitute a termination for "Good Reason" unless (X) the Grantee gives the Successor written notice of such occurrence within 90 days of such occurrence and such occurrence is not cured by the Successor within 30 days of the date on which such written notice is received by the Successor and (Y) the Grantee actually terminates his or her employment with the Successor prior to the 365th day following such occurrence.

(v)A termination by the Successor without "Cause" means the Successor's termination of the Grantee's employment with the Successor under circumstances that do not involve or relate to the occurrence of any of the following:

(A)an act or acts of personal dishonesty taken by the Grantee and intended to result in substantial personal enrichment of the Grantee at the expense of the Company;

(B)repeated failure by the Grantee to devote reasonable attention and time during normal business hours to the business and affairs of the Company or to use the Grantee's reasonable best efforts to perform faithfully and efficiently the responsibilities assigned to the Grantee (provided that such failure is demonstrated to be willful and deliberate on the Grantee's part and is not remedied in a reasonable period of time after receipt of written notice from the Company); or (C) the conviction of the Grantee of a felony.

4.Exercise of SARs.

(a)To the extent exercisable as provided in Section 3of this Agreement, the SARs may be exercised in whole or in part by delivery to the Company of a notice in form and

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substance satisfactory to the Company specifying the number of SARs to be exercised and the date of exercise.

(b)Upon exercise, the Company will issue to the Grantee, with respect to the number of SARs that are exercised, the number of shares of Common Stock that equals the Market Value per Share of Common Stock on the date of exercise divided into the Spread, rounded down to the nearest whole share.

5.Termination of SARs. Both exercisable and nonexercisable SARs shall terminate, as provided below, after the end of the earliest to occur of the following periods:

(a)90 days after the Grantee ceases to be an employee of the Company or a Subsidiary, unless the Grantee ceases to be such employee in a manner described in clause (b), (c), (d) or (e) of this Section;

(b)One year after the Grantee's becoming Disabled, if the Grantee becomes Disabled while continuously employed by the Company or a Subsidiary;

(c)One year after the death of the Grantee, if the Grantee dies while continuously employed by the Company or a Subsidiary or within the period specified in clause above or clause (d) below if applicable to the Grantee;

(d)One year after the Grantee retires from continuous employment with the Company or a Subsidiary if (i) the Grantee is at the time of such retirement at least age 62, or (ii) when the Grantee retires, the Grantee's age, plus full years of continuous employment by the Company or any of its Subsidiaries, equals 75;

(e)One year after the Grantee ceases to be an employee of the Successor under the conditions specified in Section 3(d)of this Agreement; and

(f)Ten years from the Date of Grant.

6.Transferability. Subject to Section 15 of the Plan, no SAR or any interest therein shall be transferable prior to exercise pursuant to Section 4hereof other than by will or pursuant to the laws of descent and distribution and may be exercised during the Grantee's lifetime only by the Grantee or, in the event of the Grantee's legal incapacity to do so, by the Grantee's guardian or legal representative acting on behalf of the Grantee in a fiduciary capacity under state law or court supervision.

7.Compliance with Law. The SARs shall not be exercisable if such exercise would involve a violation of any applicable federal or state securities law, and the Company hereby agrees to make reasonable efforts to comply with any applicable federal and state securities laws.

8.Adjustments. The SARs are subject to mandatory adjustment under the terms of Section 11 of the Plan.

9.Withholding Taxes. To the extent that the Company is required to withhold federal, state, local or foreign taxes in connection with the delivery to the Grantee of Common Stock or any other payment to the Grantee or any other payment or vesting event under this Agreement, the Grantee hereby authorizes withholding from payroll and any other amounts

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payable to the Grantee, including amounts payable hereunder, and otherwise agrees to make adequate provision for, any sums required to satisfy such tax withholding obligations of the Company. The Company shall have no obligation to make delivery or payment hereunder until the tax withholding obligations of the Company have been satisfied by the Grantee. If all or any part of such withholding requirement be satisfied by retention by the Company of a portion of the Common Stock to be delivered to the Grantee or by delivering to the Company other shares of Common Stock held by the Grantee, the shares so retained shall be credited against such withholding requirement at the Market Value per Share of such Common Stock on the date of such delivery. In no event will the market value of the Common Stock to be withheld and/or delivered pursuant to this Section 9to satisfy applicable withholding taxes exceed the minimum amount of taxes required to be withheld, unless otherwise agreed to by the Grantee, provided, however, that such amount shall not exceed the statutory maximum withholding rates.

10.No Employment Rights. The grant of the SARs under this Agreement to the Grantee is a voluntary, discretionary award being made on a one-time basis and it does not constitute a commitment to make any future awards. The grant of the SARs and any payments made hereunder will not be considered salary or other compensation for purposes of any severance pay or similar allowance, except as otherwise required by law. Nothing in this Agreement will give the Grantee any right to continue employment with the Company or any Subsidiary, as the case may be, or interfere in any way with the right of the Company or a Subsidiary to terminate the employment of the Grantee at any time.

11.Relation to Other Benefits. Any economic or other benefit to the Grantee under this Agreement or the Plan shall not be taken into account in determining any benefits to which the Grantee may be entitled under any profitsharing, retirement or other benefit or compensation plan maintained by the Company or a Subsidiary and shall not affect the amount of any life insurance coverage available to any beneficiary under any life insurance plan covering employees of the Company or a Subsidiary.

12.Amendments. Any amendment to the Plan shall be deemed to be an amendment to this Agreement to the extent that the amendment is applicable hereto; provided, however, that (a) no amendment shall adversely affect the rights of the Grantee under this Agreement without the Grantee's written consent, and (b) the Grantee's consent shall not be required to an amendment that is deemed necessary by the Company to ensure compliance with Section 409A of the Code.

13.Severability. In the event that one or more of the provisions of this Agreement shall be invalidated for any reason by a court of competent jurisdiction, any provision so invalidated shall be deemed to be separable from the other provisions hereof, and the remaining provisions hereof shall continue to be valid and fully enforceable.

14.Relation to Plan. This Agreement is subject to the terms and conditions of the Plan. In the event of any inconsistency between the provisions of this Agreement and the Plan, the Plan shall govern. The Committee acting pursuant to the Plan, as constituted from time to time, shall, except as expressly provided otherwise herein or in the Plan, have the right to determine any questions which arise in connection with this Agreement. In addition, the SARs shall be subject to the terms and conditions of the Company's clawback policy in effect on the Date of Grant as if such SARs were "Incentive-Based Compensation" (as such term is defined in such clawback policy).

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15.Successors and Assigns. Without limiting Section 6hereof, the provisions of this Agreement shall inure to the benefit of, and be binding upon, the successors, administrators, heirs, legal representatives and assigns of the Grantee, and the successors and assigns of the Company.

16.Governing Law. This Agreement will be construed under the laws of the Commonwealth of Pennsylvania, without regard to its conflict of law provisions, and the parties consent and agree that the federal and state courts of the Commonwealth of Pennsylvania will have exclusive jurisdiction over any dispute relating to this Agreement.

17.Acknowledgement. The Grantee acknowledges that the Grantee (a) has received a copy of the Plan, (b) has had an opportunity to review the terms of this Agreement and the Plan, (c) understands the terms and conditions of this Agreement and the Plan and (d) agrees to such terms and conditions.

18.Counterparts. This Agreement may be executed in one or more counterparts, each of which shall be deemed to be an original but all of which together will constitute one and the same Agreement.

[signature page follows]

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IN WITNESS WHEREOF, the Company has caused this Agreement to be executed on its behalf by its duly authorized officer and the Grantee has executed this Agreement, effective as of the day and year first above written.

HARSCO CORPORATION

By: /s/ F. Nicholas Grasberger III Name: F. Nicholas Grasberger III Title: Chairman, President and CEO

The undersigned hereby acknowledges receipt of an executed version of this Agreement and accepts the award of SARs granted hereunder on the terms and conditions set forth herein and in the Plan (including the terms of the Non-Competition Agreement, attached hereto as Exhibit A).

GRANTEE

By:

Name:

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EXHIBIT A

Non-Competition Agreement

1.Grant. Grantee acknowledges that Grantee has access to the confidential and proprietary trade secret information of Harsco Corporation, including its subsidiaries, joint ventures, and operating divisions (the "Company"), as further described below ("Confidential/Proprietary Trade Secret Information"). Further, Grantee acknowledges that Grantee derives significant value from the Company and from the Confidential/Proprietary Trade Secret Information provided during the term of employment with the Company, which enables Grantee to optimize the performance of the Company's performance and Grantee's own personal, professional, and financial benefit. In consideration of the grant described in the award agreement (the "Agreement") to which these terms, conditions and provisions (the "Non-Competition Agreement") are attached as an exhibit, Grantee agrees that, during Grantee's employment by the Company, and for a period of twelve (12) months after the cessation of such employment for any reason (both such periods collectively referred to as the "Restricted Period"), Grantee will not, directly or indirectly, engage in any of the following competitive activities:

(a)For Grantee or on behalf of any other corporation, business, partnership, individual, or other entity, directly or indirectly solicit, divert, contract with, or attempt to solicit, divert, or contractwith,anycustomerwithwhomGranteehadMaterialContactduringthefinaltwo (2) years of Grantee's employment with the Company concerning any products or services that are similar to those that Grantee was responsible for or were otherwise involved with during Grantee's employment with the Company. For purposes of this Non-Competition Agreement, the Grantee will have had "Material Contact" with a customer if: (i) Grantee had business dealings with the customer on the Company's behalf; (ii) Grantee was responsible for supervising or coordinating the dealings between the Company and the customer; or (iii) Grantee obtained Confidential/Proprietary Trade Secret Information about the customer as a result of Grantee's association with the Company;

(b)Within the geographic territory where Grantee was employed by the Company, obtained knowledge of Confidential/Proprietary Trade Secret Information, or had contact with the Company's customers, become employed by or otherwise render services to (as a director, employee, contractor or consultant) or have any ownership interest in any business which is engaged in offering the same or similar products or services as, or otherwise competes with those Company, including its subsidiaries and operating unit(s) with which Grantee was employed or in any way involved during the last twelve (12) months of employment with the Company; or

(c)(i) induce, offer, assist, encourage or suggest that another business or enterprise offer employment to or enter into a consulting arrangement with any employee, agent or representative of the Company or (ii) induce, offer, assist, encourage or suggest that any employee, agent or representative of the Company, including its subsidiaries and joint ventures, terminate his or

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her employment or business affiliation with the Company or accept employment with any other business or enterprise.

(d)Confidential/Proprietary Trade Secret Information.

(i)Grantee agrees to keep secret and confidential all Confidential/Proprietary Trade Secret Information (further described below) acquired by Granteewhileemployedby the Company or concerning the business and affairs of the Company, its vendors, its customers, and its affiliates (whether of a business, commercial or technological nature), and further agrees that Grantee will not disclose any such Confidential/Proprietary Trade Secret Information so acquired to any individual, partner, company, firm, corporation or other person or use the same in any manner other thanin connection with the business and affairs of the Company and its affiliates. Except in the performance of services for the Company, the Grantee will not, for so long as the Confidential/Proprietary Trade Secret Information remains so designated under applicable law, use, disclose, reproduce, distribute, transmit, reverse engineer, decompile, disassemble, or transfer the Confidential/Proprietary Trade Secret Information or any portion thereof.

(ii)For purposes of this Non-Competition Agreement, "Confidential/Proprietary Trade Secret Information" includes all information of a confidential or proprietary nature that relates to the business, products, services, research or development of the Company, and its affiliates or their respective suppliers, distributors, customers, independent contractors or other business relations. Confidential/Proprietary Trade Secret Information also includes, but is not limited to, the following: (A) internal business information (including information relating to strategic and staffing plans and practices, business, training, financial, marketing, promotional and sales plans and practices, cost, rate and pricing structures, accounting and business methods and customer and supplier lists); (B) identities of, individual requirements of, specific contractual arrangements with and information about, the Company's suppliers, distributors, customers, independent contractors or other business relations and their confidential information; (C) trade secrets, copyrightable works and other confidential information (including ideas, formulas, recipes, compositions, inventions, innovations, improvements, developments, methods, know-how, manufacturing and production processes and techniques, research and development information, compilations of data and analyses, data and databases relating thereto, techniques, systems, records, manuals, documentation, models, drawings, specifications, designs, plans, proposals, reports and all similar or related information whether patentable or unpatentable and whether or not reduced to practice); (D) other intellectual property rights of the Company, or any of its affiliates; and (E) any other information that would constitute a trade secret under the Pennsylvania Uniform Trade Secrets Act, as amended

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from time to time (or any successor). The term "Confidential/Proprietary Trade Secret Information" also includes any information or data described above which the Company obtains from another party and which the Company treats as proprietary or designates as trade secrets, whether or not owned or developed by the Company.

(iii)All documents and materials supplied to Grantee or developed by Grantee in the course of, or as a result of Grantee's employment at the Company whether in hard copy, electronic format or otherwise shall be the sole property of the Company. Grantee will at any time upon the request of the Company and in any event promptly upon termination of Grantee's employment or relationship with the Company, but in any event no later than five (5) business days after such termination, deliver all such materials to the Company and will not retain any originals or copies of such materials, whether in hard copy form or as computerized and/or electronic records. Except to the extent approved by the Company or required by Grantee's bona fide job duties for the Company, the Grantee also agrees that Grantee will not copy or remove from the Company's place of business or the place of business of a customer of the Company, property or information belonging to the Company or the customer or entrusted to the Company or the customer. In addition, the Grantee agrees that Grantee will not provide any such materials to any competitor of or entity seeking to compete with the Company unless specifically approved in writing by the Company. Notwithstanding anything in paragraph 1(d)(3) of this Non-Competition Agreement to the contrary, if the Company needs to take legal action to secure such return delivery of such materials, Grantee shall be responsible for all legal fees, costs and expenses incurred by the Company in doing so.

(iv)Grantee understands that nothing contained in this Agreement limits Grantee’s ability to file a charge or complaint with any federal, state or local governmental agency or commission (“Government Agencies”). Grantee further understands that this Agreement does not limit Grantee’s ability to communicate with any Government Agencies or otherwise participate in any investigation or proceeding that may be commenced by any Government Agency including providing documents or other information without notice to the Company. This Agreement does not limit the Grantee’s right to receive an award for information provided to any Government Agencies.

2.Subsequent Employment.

(a)Advise the Company of New Employment. In the event of a cessation of Grantee's employment with the Company, and during the Restricted Period described in paragraph 1 above, Grantee agrees to disclose to the Company, the name and address of any new employer or business affiliation within ten (10) calendar days of Grantee's accepting such position. In the event that Grantee fails to notify the Company of such new employment or business

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affiliation as required above, the Restricted Period will be extended by a period equal to the period of nondisclosure.

(b)Grantee's Ability to Earn Livelihood. Grantee acknowledges that, in the event of a cessation of Grantee's employment with the Company, for any reason and at any time, the provisions of paragraph 1 of this Non-Competition Agreement will not unreasonably restrict Grantee's ability to earn a living. Grantee and the Company acknowledge that Grantee's rights have been limited by this Non-Competition Agreement only to the extent reasonably necessary to protect the legitimate interests of the Company in its Confidential/Proprietary Trade Secret Information.

(c)Enforcement. Grantee agrees that if Grantee violates the covenants and agreements set forth in this Non-Competition Agreement, the Company would suffer irreparable harm, and that such harm to the Company may be impossible to measure in monetary damages. Accordingly, in addition to any other remedies which the Company may have at law or in equity, the Company will have the right to have all obligations, undertakings, agreements, covenants and other provisions of this Non-Competition Agreement specifically performed by Grantee, and the Company will have the right to obtain preliminary and permanent injunctive relief to secure specific performance, and to prevent a breach or contemplated breach, of this Non- Competition Agreement. In such event, the Company will be entitled to an accounting and repayment of all profits, compensation, remunerations or benefits which Grantee or others, directly or indirectly, have realized or may realize as a result of, growing out of, or in conjunction with any violation of this Non-Competition Agreement. Such remedies will be an addition to and not in limitation of any injunctive relief or other rights or remedies to which the Company is or may be entitled at law or in equity. In the event that the Company obtains any requested relief in any action brought to enforce the terms of this Non-Competition Agreement through court proceedings, the Company will be entitled to reimbursement for all legal fees, costs and expenses incident to enforcement.

3.Severability. If any section, paragraph, term or provision of this Non-Competition Agreement, or the application thereof, is determined by a competent court or tribunal to be invalid or unenforceable, then the other parts of such section, paragraph, term or provision will not be affected thereby and will be given full force and effect without regard to the invalid or unenforceable portions, and the section, paragraph, term or provision of this Non-Competition Agreement will be deemed modified to the extent necessary to render it valid and enforceable.

4.Miscellaneous.

(a)Employment.

(i)This Non-Competition Agreement does not constitute a guarantee of employment and termination of employment will not affect the enforceability of this Non-Competition Agreement.

(ii)Grantee agrees that if Grantee is transferred from the entity or division which was Grantee's employer at the time Grantee signed this Non-

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Competition Agreement to employment by another division or another company that is a subsidiary or affiliate of Harsco Corporation, and Grantee has not entered into a superseding agreement with the new employer covering the subject matter of this Non-Competition Agreement, then this Non-Competition Agreement will continue in effect and the Grantee's new employer will be termed "the Company" for all purposes hereunder and will have the right to enforce this Non-Competition Agreement as Grantee's employer. In the event of any subsequent transfer, Grantee's new employer will succeed to all rights under this Non- Competition Agreement so long as such employer will be Harsco Corporation or one of its subsidiaries or affiliates and so long as this Non-Competition Agreement has not been superseded.

(b)Headings. The headings contained in this Non-Competition Agreement are inserted for convenience of reference only, and will not be deemed to be a part of this Non-Competition Agreement for any purposes, and will not in any way define or affect the meaning, construction or scope of any of the provisions of this Non-Competition Agreement.

(c)Governing Law. This Non-Competition Agreement will be construed under the laws of the Commonwealth of Pennsylvania, without regard to its conflict of law provisions, and the parties consent and agree that the federal and state courts of the Commonwealth of Pennsylvania will have exclusive jurisdiction over any dispute relating to this Non- Competition Agreement.

(d)Supplemental Nature of this Non-Competition Agreement. The restrictions set forth in paragraph 1 of this Non-Competition Agreement will be in addition to any other such restrictive covenants agreed to through separate Non-Competition Agreements, if any, between Grantee and the Company and will survive the vesting or exercise of the equity award evidenced by the Agreement.

(e)Waiver. The failure by the Company to enforce any right or remedy available to it under this Non-Competition Agreement will not be construed to be a waiver of such right or remedy with respect to any other prior, concurrent or subsequent breach or failure. No waiver of rights under this Non-Competition Agreement will be effective unless made in writing with specific reference to this Non-Competition Agreement.

(f)Notification. Grantee agreed that the Company may notify any third party about Grantee's obligations under this Non-Competition Agreement until such time as Grantee has performed all of Grantee's obligations hereunder. Upon the Company's request, Grantee agrees to provide the Company with information, including, but not limited to, supplying details of Grantee's subsequent employment, sufficient to verify that Grantee has not breached, or is not breaching, any covenant in this Non-Competition Agreement.

(g)Tolling. In the event that Grantee violates any of the covenants set forth in this Non-Competition Agreement, then the Company shall have the benefit of the full period of the covenants such that the covenants shall have the duration of the Restricted Period computed from the date Grantee ceased violation of the covenants, either by order of the court or otherwise.

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5.Acknowledgments.

(i)Grantee acknowledges and agrees that this Non-Competition Agreement is in consideration of, (A) the grant evidenced by the Agreement, (B) access to Confidential/Proprietary Trade Secret Information, as required by Grantee's job duties, and (C) access to important customer relationships and the associated customer goodwill of the Company.

(ii)Grantee acknowledges that he or she has carefully read and considered the provisions of this Non-Competition Agreement, and that this Non-Competition Agreement is reasonable as to time and scope and activities prohibited, given the Company's need to protect its interests and given the consideration provided to Grantee in the form of the grant evidenced by the Agreement.

(iii)Grantee acknowledges that he or she has had an opportunity to consult with an independent legal counsel of Grantee's choosing, and accept the grant contained in the Agreement and continuing employment on the terms set forth in this Non-Competition Agreement.

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EXHIBIT B

Additional Terms and Conditions for International Employees

TERMS AND CONDITIONS

This Exhibit B (this "Exhibit"), which is part of the Agreement, contains additional terms and conditions that govern the SARs granted to the Grantee under the Plan if he or she resides outside the United States. The terms and conditions in Part A apply to all Grantees outside the United States. The country-specific terms and conditions and/or notifications in Part B will also apply to the Grantee if he or she resides in one of the countries listed below. Unless otherwise defined, capitalized terms used but not defined in this Exhibit have the meanings set forth in the Plan and/or the Agreement.

NOTIFICATIONS

This Exhibit also includes information regarding exchange controls and certain other issues of which the Grantee should be aware with respect to participation in the Plan. The information is based on the exchange control, securities and other laws in effect in the respective countries as of November 2017. Such laws are often complex and change frequently. As a result, the Company strongly recommends that the Grantee not rely on the information in this Exhibit as the only source of information relating to the consequences of his or her participation in the Plan because the information may be out of date at the time that the Grantee exercises the SARs or sell shares of Common Stock acquired under the Plan.

In addition, the information contained herein is general in nature and may not apply to the Grantee's particular situation, and the Company is not in a position to assure the Grantee of a particular result. Accordingly, the Grantee is advised to seek appropriate professional advice as to how the relevant laws in his or her country may apply to the Grantee's situation.

Finally, if the Grantee is a citizen or resident, or is considered a resident, of a country other than the one in which he or she is currently working, or transferred employment after the SARs were granted to him or her, the information contained herein may not be applicable. In addition, the Company shall, in its sole discretion, determine to what extent the additional terms and conditions included herein will apply to you under these circumstances.

A.ALL NON-U.S. COUNTRIES ADDITIONAL TERMS AND CONDITIONS

The following additional terms and conditions will apply to the Grantee if he or she resides in any country outside the United States.

Responsibility for Taxes. The following section replaces Section 9 of the Agreement in its entirety:

The Grantee acknowledges that, regardless of any action taken by the Company or, if different, the Grantee's employer (the "Employer"), the ultimate liability for all income tax, social insurance, payroll tax, fringe benefits tax, payment on account or other tax-related items related to the Grantee's participation in the Plan and legally applicable to the Grantee ("Tax-Related Items") is and remains the Grantee's responsibility and may exceed the amount actually withheld by the Company or the Employer. The Grantee further acknowledges that the Company and/or the Employer (i) make no representations or undertakings regarding the

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treatment of any Tax-Related Items in connection with any aspect of the SARs, including, but not limited to, the grant, vesting or exercise of the SARs, the subsequent sale of shares of Common Stock acquired pursuant to such exercise and the receipt of any dividends; and (ii) do not commit to and are under no obligation to structure the terms of the grant or any aspect of the SARs to reduce or eliminate the Grantee's liability for Tax-Related Items or achieve any particular tax result. Further, if the Grantee is subject to Tax-Related Items in more than one jurisdiction between the Date of Grant and the date of any relevant taxable or tax withholding event, as applicable, the Grantee acknowledges that the Company and/or the Employer (or former employer, as applicable) may be required to withhold or account for Tax-Related Items in more than one jurisdiction.

Prior to the relevant taxable or tax withholding event, as applicable, the Grantee agrees to make adequate arrangements satisfactory to the Company and/or the Employer to satisfy all Tax- Related Items. In this regard, the Grantee authorizes the Company and/or the Employer, or their respective agents, at their discretion, to satisfy the obligations with regard to all Tax-Related Items by any one or a combination of the following methods: (i) requiring payment by the Grantee to the Company, on demand, by cash, check or other method of payment as may be determined acceptable by the Company; or (ii) withholding from the Grantee's wages or other cash compensation paid to the Grantee by the Company and/or the Employer; or (iii) withholding from proceeds of the sale of shares of Common Stock acquired at exercise of the SARs either through a voluntary sale or through a mandatory sale arranged by the Company (on the Grantee's behalf pursuant to this authorization) without further consent; or (iv) withholding shares of Common Stock issuable at exercise of the SARs.

Depending on the withholding method, the Company may withhold or account for Tax-Related Items by considering applicable minimum statutory withholding amounts or other applicable withholding rates, including maximum applicable rates, in which case the Grantee will receive a refund of any over-withheld amount in cash and will have no entitlement to the Common Stock equivalent. If the obligation for Tax-Related Items is satisfied by withholding in shares of Common Stock, for tax purposes, the Grantee is deemed to have been issued the full number of shares of Common Stock subject to the exercised SARs, notwithstanding that a number of the shares of Common Stock are held back solely for the purpose of paying the Tax-Related Items.

Finally, the Grantee agrees to pay to the Company or the Employer any amount of Tax-Related Items that the Company or the Employer may be required to withhold or account for as a result of the Grantee's participation in the Plan that cannot be satisfied by the means previously described. The Company may refuse to issue or deliver the shares or the proceeds of the sale of shares of Common Stock, if the Grantee fails to comply with his or her obligations in connection with the Tax-Related Items.

Nature of Grant. In accepting the SARs, the Grantee acknowledges, understands and agrees that: (1) the Plan is established voluntarily by the Company, it is discretionary in nature, and may be amended, suspended or terminated by the Company at any time, to the extent permitted by the Plan; (2) all decisions with respect to future SARs or other grants, if any, will be at the sole discretion of the Company; (3) the Grantee is voluntarily participating in the Plan; (4) the SARs and any shares of Common Stock acquired under the Plan are not intended to replace any pension rights or compensation; (5) the future value of the shares of Common Stock underlying the SARs is unknown, indeterminable and cannot be predicted with certainty; (6) if the underlying shares of Common Stock do not increase in value, the SARs will have no value; (7) if the Grantee exercises the SARs and acquires shares of Common Stock, the value of such shares of Common Stock may increase or decrease in value, even below the Base Price; (8) no claim or entitlement to compensation or damages shall arise from forfeiture of the SARs

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resulting from the termination of the Grantee's employment or other service relationship (for any reason whatsoever, whether or not later found to be invalid or in breach of employment laws in the jurisdiction where the Grantee is employed or providing services or the terms of the Grantee's employment or service agreement, if any), and in consideration of the grant of the SARs to which the Grantee is otherwise not entitled, the Grantee irrevocably agrees never to institute any claim against the Company, any of its subsidiaries or affiliates or the Employer, waives his or her ability, if any, to bring any such claim, and releases the Company, its subsidiaries and affiliates and the Employer from any such claim; if, notwithstanding the foregoing, any such claim is allowed by a court of competent jurisdiction, then, by participating in the Plan, the Grantee shall be deemed irrevocably to have agreed not to pursue such claim and agrees to execute any and all documents necessary to request dismissal or withdrawal of such claim; (9) for purposes of the SARs, the Grantee's employment or service relationship will be considered terminated as of the date the Grantee is no longer actively providing services to the Company or one of its subsidiaries and affiliates (regardless of the reason for such termination and whether or not later found to be invalid or in breach of employment laws in the jurisdiction where the Grantee is employed or providing services or the terms of the Grantee's employment or service agreement, if any), and unless otherwise expressly provided in the Agreement or determined by the Company, (i) the Grantee's right to vest in the SARs under the Plan, if any, will terminate as of such date and will not be extended by any notice period (e.g., the Grantee's period of service would not include any contractual notice period or any period of "garden leave" or similar period mandated under employment laws in the jurisdiction where the Grantee is employed or providing services or the terms of the Grantee's employment or service agreement, if any); and (ii) the period (if any) during which the Grantee may exercise the SARs after such termination of the Grantee's employment or service relationship will commence on the date the Grantee ceases to actively provide services and will not be extended by any notice period mandated under employment laws in the jurisdiction where the Grantee is employed or providing services or terms of the Grantee's employment or service agreement, if any; and (iii) the Company shall have the exclusive discretion to determine when the Grantee is no longer actively providing services for purposes of his or her SARs grant (including whether the Grantee may still be considered to be providing services while on a leave of absence); unless otherwise provided in the Plan or by the Company in its discretion, the SARs and the benefits evidenced by the Agreement do not create any entitlement to have the SARs or any such benefits transferred to, or assumed by, another company nor to be exchanged, cashed out or substituted for, in connection with any corporate transaction affecting the shares of the Company; the SARs and any shares of Common Stock acquired under the Plan and the income and value of same, are not part of normal or expected compensation for any purpose, including, without limitation, calculating any severance, resignation, termination, redundancy, dismissal, end- of-service payments, bonuses, long-service awards, pension, or retirement or welfare benefits or similar payments; and (12) the Grantee acknowledges and agrees that neither the Company, the Employer nor any Subsidiary of the Company shall be liable for any foreign exchange rate fluctuation between the Grantee's local currency and the United States Dollar that may affect the value of the SARs or of any amounts due to the Grantee pursuant to the exercise of the SARs or the subsequent sale of any shares of Common Stock acquired upon exercise of the SARs.

No Advice Regarding Grant. The Company is not providing any tax, legal or financial advice, nor is the Company making any recommendations regarding the Grantee's participation in the Plan, or the Grantee's acquisition or sale of the underlying shares of Common Stock. The Grantee is hereby advised to consult with his or her own personal tax, legal and financial advisors regarding his or her participation in the Plan before taking any action related to the Plan.

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Data Privacy for Grantees not based in the European Economic Area or the United Kingdom.

The Grantee hereby explicitly and unambiguously consents to the collection, use and transfer, in electronic or other form, including email, of the Grantee's personal data as described in the Agreement and any other SARs grant materials ("Data") by and among, as applicable, the Employer, the Company and its subsidiaries and affiliates for the exclusive purpose of implementing, administering and managing the Grantee's participation in the Plan.

The Grantee understands that the Company and the Employer may hold certain personal information about the Grantee, including, but not limited to, the Grantee's name, home address and telephone number, date of birth, social insurance number or other identification number, salary, nationality, job title, any shares of stock or directorships held in the Company, details of all SARs or any other entitlement to shares of stock awarded, canceled, exercised, vested, unvested or outstanding in the Grantee's favor, for the exclusive purpose of implementing, administering and managing the Plan.

The Grantee understands that Data will be transferred to the Company's stock transfer agent and/or broker, or such other stock plan service provider as may be selected by the Company in the future, which is assisting the Company with the implementation, administration and management of the Plan. The Grantee understands that the recipients of the Data may be located in the United States or elsewhere (including outside the EEA), and that the recipient's country (e.g., the United States) may have different data privacy laws and protections than the Grantee's country. The Grantee understands that he or she may request a list with the names and addresses of any potential recipients of the Data by contacting his or her local human resources representative. The Grantee authorizes the Company, the Company's stock transfer agent and /or broker, and any other possible recipients which may assist the Company (presently or in the future) with implementing, administering and managing the Plan to receive, possess, use, retain and transfer the Data, in electronic or other form, for the sole purposes of implementing, administering and managing the Grantee's participation in the Plan. The Grantee understands that Data will be held only as long as is necessary to implement, administer and manage the Grantee's participation in the Plan. The Grantee understands that he or she may, at any time, view Data, request additional information about the storage and processing of Data, require any necessary amendments to Data or refuse or withdraw the consents herein, in any case without cost, by contacting in writing his or her local human resources representative.

Further, the Grantee understands that he or she is providing the consents herein on a purely voluntary basis. If the Grantee does not consent, or if the Grantee later seeks to revoke his or her consent, his or her employment status or service and career with the Employer will not be adversely affected; the only adverse consequence of refusing or withdrawing the Grantee's consent is that the Company would not be able to grant the Grantee SARs or other equity awards or administer or maintain such awards. Therefore, the Grantee understands that refusing or withdrawing his or her consent may affect the Grantee's ability to participate in the Plan. For more information on the consequences of the Grantee's refusal to consent or withdrawal of consent, the Grantee understands that he or she may contact his or her local human resources representative.

DataPrivacy for Grantees based in the European Economic Area (including the United Kingdom).

The Company and its subsidiaries and affiliates will process the data of the Grantee in accordance with (i) the applicable data privacy policy or policies adopted by the Company or its

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subsidiaries and affiliates; and (ii) the data privacy notice(s) provided to the Grantee covering the processing of the Grantee's data in connection with the Plan.

The Grantee understands and acknowledges that the processing of their data by the Company and its subsidiaries and affiliates in relation to the operation of the Plan is necessaryfor (i) the performance of the Agreement; (ii) to comply with any legal obligation in relation to the operation of the Plan; and (iii) to account for any tax and duties in relation to the Plan.

Governing Law and Venue. The SARs grant and the provisions of the Agreement are governed by, and subject to, the internal substantive laws of the State of Delaware in the United States of America (with the exception of its conflict of law provisions).

For purposes of litigating any dispute that arises directly or indirectly from the relationship of the parties evidenced by this grant or the Agreement, the parties hereby submit to and consent to the exclusive jurisdiction of the Commonwealth of Pennsylvania in the United States of America and agree that such litigation shall be conducted only in the courts of Cumberland County, the Commonwealth of Pennsylvania, or the federal courts for the United States of America for the Middle District of Pennsylvania, and no other courts, where this grant is made and/or to be performed.

Compliance with Law. The following provision supplements Section 7 of the Agreement: Notwithstanding any other provision of the Plan or the Agreement, unless there is an available exemption from any registration, qualification or other legal requirement applicable to the shares of Common Stock, the Company shall not be required to deliver any shares of Common Stock issuable upon exercise of the SARs prior to the completion of any registration or qualification of the shares under any local, state, federal or foreign securities or exchange control law or under rulings or regulations of the U.S. Securities and Exchange Commission ("SEC") or of any other governmental regulatory body, or prior to obtaining any approval or other clearance from any local, state, federal or foreign governmental agency, which registration, qualification or approval the Company shall, in its absolute discretion, deem necessary or advisable.The Grantee understands that the Company is under no obligation to register or qualify the shares with the SEC or any state or foreign securities commission or to seek approval or clearance from any governmental authority for the issuance or sale of the shares.Further, the Grantee agrees that the Company shall have unilateral authority to amend the Plan and the Agreement without the Grantee's consent to the extent necessary to comply with securities or other laws applicable to issuance of shares.

Electronic Delivery and Acceptance. The Company may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means, including email. The Grantee hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through an on-line or electronic system established and maintained by the Company or a third party designated by the Company.

Language. If the Grantee has received the Agreement or any other document related to the SARs and/or the Plan translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control.

Severability. The provisions of the Agreement are severable and if any one or more provisions are determined to be illegal or otherwise unenforceable, in whole or in part, the remaining provisions shall nevertheless be binding and enforceable.

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010-8970-2122/1

Imposition of Other Requirements. The Company reserves the right to impose other requirements on the Grantee's participation in the Plan, on the SARs and on any shares of Common Stock purchased upon exercise of the SARs, to the extent the Company determines it is necessary or advisable for legal or administrative reasons, and to require the Grantee to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing.

Waiver. The Grantee acknowledges that a waiver by the Company of breach of any provision of the Agreement shall not operate or be construed as a waiver of any other provision of the Agreement, or of any subsequent breach by the Grantee or any other Participant.

B.COUNTRY-SPECIFIC ADDITIONAL TERMS AND CONDITIONS AND NOTIFICATIONS

AUSTRALIA

TERMS AND CONDITIONS

Settlement of SARs. Notwithstanding anything to the contrary in the Agreement, upon the vesting of the SARs, the Grantee will receive a cash payment in an amount equal to the value of the shares of Common Stock underlying the vested SARs on a vesting date. As long as the Grantee resides in Australia, he or she may not receive or hold shares of Common Stock in connection with the SARs under the Plan. Accordingly, any provisions in the Agreement referring to issuance of shares of Common Stock shall not be applicable to the Grantee as long as he or she resides in Australia.

NOTIFICATIONS

Exchange Control Information. Exchange control reporting is required for cash transactions exceeding $10,000 and international fund transfers. The Australian bank assisting with the transaction will file the report.

BELGIUM

NOTIFICATIONS

Tax Reporting Information. Grantee is required to report any bank accounts opened and maintained outside of Belgium on his or her annual Belgian tax return.

BRAZIL

TERMS AND CONDITIONS

Compliance with Law. By accepting the SARs, the Grantee acknowledges that he or she agrees to comply with applicable Brazilian laws and pay any and all applicable taxes associated with the exercise of the SARs, the receipt of any dividends, and the sale of shares of Common Stock acquired under the Plan.

NOTIFICATIONS

Exchange Control Information. If the Grantee is resident or domiciled in Brazil, he or she will be required to submit annually a declaration of assets and rights held outside of Brazil to the Central Bank of Brazil if the aggregate value of such assets and rights is equal to or greater than US

$100,000. Assets and rights that must be reported include shares of Common Stock.

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010-8970-2122/1

CANADA

TERMS AND CONDITIONS

Settlement. Notwithstanding any discretion in the Plan or anything to the contrary in this Agreement, this grant of RSUs, along with any dividend equivalent amounts otherwise payable under Section 6 of this Agreement, shall only be settled in newly-issued shares of Common Stock, and without the use of any form of employee benefit trust.This provision is without prejudice to the application of Section 8 of this Agreement, provided the Grantee has been given a reasonably opportunity to pay (either out his/her own funds or via payroll deduction) the relevant withholding tax amounts.

Continuous Employment.The following provision supplements this Agreement and the Plan:

A Grantee’s “continuous employment” (or substantially similar term) with the Company or a Subsidiary, as the case may be, will be deemed to have been terminated (regardless of the reason for the termination and whether or not later found to be invalid or in breach of applicable law in the jurisdiction where Grantee is rendering services or the terms of Grantee’s employment or other service agreement, if any) on the date that is the earliest of (1) the termination date of Grantee’s status as an employee, (2) the date Grantee receives written notice of termination of Grantee’s status as an employee or service provider, or (3) the date Grantee is no longer actively employed by or actively providing services to the Company or any of its Subsidiaries regardless of any notice period or period of pay in lieu of such notice mandated under applicable law (including, but not limited to, statutory law, regulatory law and/or common law) in the jurisdiction where Grantee is employed or rendering service or the terms of Grantee’s employment or other service agreement, if any.

Notwithstanding the foregoing, if applicable employment or labour standards legislation explicitly requires continued participation in the Plan during a statutory notice period, Grantee acknowledges that his or her right to participate in the Plan, if any, will terminate effective as of the last day of Grantee’s minimum statutory notice period, but Grantee will not earn or be entitled to pro-rata vesting if the vesting date falls after the end of Grantee’s statutory notice period, nor will Grantee be entitled to any compensation for lost vesting.

Cause. For purposes of this Agreement and the Plan, “Cause” means the occurrence of any of the following: (A) an act or acts of personal dishonesty taken by the Grantee and intended to result in substantial personal enrichment of the Grantee at the expense of the Company; (B) repeated failure by the Grantee to devote reasonable attention and time during normal business hours to the business and affairs of the Company or to use the Grantee's reasonable best efforts to perform faithfully and efficiently the responsibilities assigned to the Grantee (provided that such failure is demonstrated to be willful and deliberate on the Grantee's part and is not remedied in a reasonable period of time after receipt of written notice from the Company); or (C) the conviction of the Grantee of a felony, indictable offence, or summary conviction offence that is related to the employment or intended employment of the Grantee; provided, however, that if the Grantee is employed in the Province of Ontario, “Cause” instead means willful misconduct, disobedience or willful neglect of duty that is not trivial and has not been condoned by the Company or a Subsidiary.

NOTIFICATIONS

Securities Law Information.

Your participation in the Plan is voluntary, and you acknowledge and agree that you have not been induced to enter into this Agreement or acquire any RSUs or Common Stock by

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expectation of employment, engagement or appointment or continued employment, engagement or appointment.

You understand that you are permitted to sell Common Stock acquired pursuant to the Plan, provided that the Company is a “foreign issuer” that is not a public company in any jurisdiction of Canada and the sale of the Common Stock acquired pursuant to the Plan takes place: (i) through an exchange, or a market, outside of Canada on the distribution date; or (ii) to a person or company outside of Canada. For purposes hereof, in addition to not being a reporting issuer in any jurisdiction of Canada, a “foreign issuer” is an issuer that: (i) is not incorporated or existing pursuant to the laws of Canada or any jurisdiction of Canada; (ii) does not have its head office in Canada; and (iii) does not have a majority of its executive officers or directors ordinarily resident in Canada. If any designated broker is appointed under the Plan, you shall sell such securities through the designated broker.

For Grantees in the Province of Ontario

Non-Competition Agreement. Section 1(b) of the Non-Competition Agreement does not apply to non-Executive Grantees employed in the Province of Ontario, where “Executive” has the meaning given to it in the Working for Workers Act (Ontario).

Foreign Asset/Account Reporting Information.Grantee is required to report any foreign specified property on form T1135 (Foreign Income Verification Statement) if the total value of the “foreign specified property” exceeds C$100,000 at any time in the year.Foreign specified property includes Common Stock acquired under the Plan, and may include the RSUs.The RSUs must be reported (generally at a nil cost) if the $100,000 cost threshold is exceeded because of other foreign property Grantee holds.If Common Stock is acquired, its cost generally is the adjusted cost base (“ACB”) of the Common Stock.The ACB ordinarily would equal the fair market value of the Common Stock at the time of acquisition, but if Grantee owns other Common Stock, this ACB may have to be averaged with the ACB of the other Common Stock.The form must be filed by April 30 following the taxation year in question.Grantee should consult with his or her personal legal and tax advisor, as the case may be, to ensure compliance with applicable reporting obligations.

CHINA

TERMS AND CONDITIONS

Settlement of SARs. Notwithstanding anything to the contrary in the SARs Agreement, due to local regulatory requirements, upon the vesting of the SARs the Grantee will receive a cash payment in China via the Company local Chinese payroll in an amount equal to the value of the shares of Common Stock underlying the vested SARs on the vesting date. As long as the Grantee resides in China, he or she may not receive or hold shares of Common Stock in connection with the SARs under the Plan. Accordingly, any provisions in the Agreement referring to issuance of shares of Common Stock shall not be applicable to the Grantee as long as he or she resides in China.

GERMANY

TERMS AND CONDITIONS

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Parties to the Agreement. The Agreement is exclusively concluded between Harsco Corporation and the Grantee. The local Harsco entity employing the Grantee is not in any way party to the Agreement or entitled/committed hereby.

Vesting of SARs. Notwithstanding anything to the contrary in the Agreement or in the Plan, the Grantee shall be considered "Disabled" for the purposes of this Agreement, if the Grantee's employment contract ends as a consequence of the Grantee being granted a permanent statutory pension for full occupational disability (unbefristete Rente wegen voller Erwerbsminderung) by the competent authorities.

Non-Competition Agreement. Notwithstanding anything to the contrary in the Non-Competition Agreement, it is exclusively concluded between Harsco Corporation and the Grantee. The employer of the Grantee is not in any way party to the Non-Competition Agreement or entitled/committed hereby. The Non-Competition Agreement does not affect in any way a separate non-competition agreement concluded between the Grantee and his/her employer.

FRANCE

TERMS AND CONDITIONS

Consent to Receive Information in English. By accepting the grant of the SARs, the Grantee confirms having read and understood the Plan and the Agreement, which were provided in the English language. The Grantee accepts the terms of those documents accordingly.

En acceptant cette attribution gratuite d'actions, le Grantee confirme avoir lu et compris le Plan et ce Contrat, incluant tous leurs termes et conditions, qui ont été transmis en langue anglaise. Le Grantee accepte les dispositions de ces documents en connaissance de cause.

NOTIFICATIONS

Tax Notification. The SARs are not intended to be French tax-qualified.

Exchange Control Notification. The Grantee may hold shares of Common Stock acquired under the Plan outside of France provided that he or she declares all foreign accounts (including any accounts that were opened or closed during the tax year) on his or her annual French income tax return.

INDIA

TERMS AND CONDITIONS

The Grantee hereby agrees that it shall hold the shares of the Common Stock pursuant to this Agreement and the Plan, at all times in accordance with the applicable laws in India, including but not limited to the (Indian) Foreign Exchange Management (Transfer or Issue of Any Foreign Security) Regulations, 2004 (and as amended or replaced), relevant master circulars, directions, notifications issued in this regard by the Reserve Bank of India from time to time and shall carry out the necessary reporting with the Reserve Bank of India at all stages of granting and vesting, if and as may be required. The Grantee agrees to indemnify the Company and/or Subsidiary of the Company with respect to any non-compliance and/or non-adherence by the Grantee of any of the applicable laws in India arising out of holding of the shares of the Common Stock by the Grantee.

The Grantee shall declare the holding of shares of the Common Stock, if and as may be necessary, in its income for taxation purposes and agrees to indemnify the Company and/or Subsidiary of the Company with respect to any and all taxes that it shall be obligated to pay with

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respect to the shares of the Common Stock such as including but not limited to income tax, capital gain taxes etc., under this Agreement and which may arise as a result of the sale of the shares of the Common Stock and the transactions contemplated hereunder.

LUXEMBOURG

NOTIFICATIONS

Exchange Control Information. Grantee understands that Grantee is required to report any inward remittances of funds to the Banque Centrale de Luxembourg and/or the Service Central de la Statistique et des Études Économiques within 15 working days following the month during which the transaction occurred unless such payment is reported by a Luxembourg-resident financial institution.

THE NETHERLANDS

TERMS AND CONDITIONS

Non-Competition Agreement. The non-competition agreement entered into between the Company and the Grantee shall be in addition to any non-compete arrangements between the Grantee and his or her employer.

SWITZERLAND

TERMS AND CONDITIONS

Vesting: With the acceptance of a Grant, the Grantee expressly acknowledges that any RSU, PSU and/or SAR shall not give the Grantee any right or entitlement until such Grant is fully vested. The Grant remains fully discretionary until full vesting.

Continuous Employment: In Switzerland, "continuously employed" (or substantially similar term) means the absence of any interruption or termination (issuance of termination notice) of the Grantee's employment with the Company or with a Subsidiary of the Company. Continuous employment shall not be considered interrupted or terminated in the case of sick leave, military leave or any other leave of absence approved by the Company for which compensation needs to be paid by the Company or salary replacement benefits are granted by any insurance or in the case of transfers between locations of the Company and its Subsidiaries. For the avoidance of any doubt, continuous employment ends in any case with the end of the employment, even if any salary replacement benefits continue to be paid by any insurance, pension scheme or social security.

Retirement: For the purpose of the Plan, only a retirement under the rules and conditions of the Swiss pension scheme of the Subsidiary employing the Grantee shall qualify as retirement for the purpose of vesting of RSU, PSU or termination of SAR, and only if such retirements is (A) at age 62 or older while employed by the Company or any of its Subsidiaries; or (B) at or after such time as the Grantee's age (minimum of age 55), plus full years of continuous employment by the Company or any of its Subsidiaries, equals 75.

Disability: For purposes of the Plan, the Grantee shall be considered "Disabled" if the Grantee is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or qualifies as permanent full disability under the applicable Swiss social security and/or pension laws.

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Non-Competition Agreement: For the avoidance of any doubt, any non-competition agreement entered into between the Grantee and the Company in connection with the Plan and grants thereunder shall be in addition to any non-competition agreement agreed between the Grantee and the employing Subsidiary and shall not replace such non-competition agreement.

NOTIFICATIONS

Exchange Control Notification. The Grantee may hold shares of Common Stock acquired under the Plan outside of Switzerland provided that he or she declares all foreign accounts (including any accounts that were opened or closed during the tax year) on his or her annual Swiss tax declaration.

UNITED ARAB EMIRATES

NOTIFICATIONS

Securities Law Notice. SARs under the Plan are granted only to select executive officers and other employees of the Company and its subsidiaries for the purpose of providing such eligible persons with incentives and rewards for performance. The Agreement, including this Exhibit, the Plan and any documents the Grantee may receive in connection with the SARs are intended for distribution to such eligible persons and must not be delivered to, or relied on, by any other person.

The Emirates Securities and Commodities Authority, the Central Bank, the Ministry of Economy and the Dubai Department of Economic Development do not have any responsibility for reviewing or verifying any documents in connection with the Plan nor have they reviewed or approved the Plan or the Agreement. The securities to which this statement relates may be illiquid and/or subject to restrictions on their resale. The Grantee and/or prospective purchasers of the securities offered should conduct their own due diligence on the securities.

If the Grantee does not understand the contents of the Agreement, including this Exhibit, or the Plan, the Grantee should consult an authorized financial adviser.

UNITED KINGDOM

TERMS AND CONDITIONS

U.K. Sub-Plan. The terms of the U.K. Sub-plan apply to the SARs.

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EX-31.1

Exhibit 31.1

HARSCO CORPORATION

CERTIFICATION PURSUANT TO RULE 13a-14(a) OR 15d-14(a)

AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, F. Nicholas Grasberger, III, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Harsco Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting. 

May 3, 2022

/s/ F. NICHOLAS GRASBERGER III

F. Nicholas Grasberger III

Chairman, President and Chief Executive Officer

EX-31.2

Exhibit 31.2

HARSCO CORPORATION

CERTIFICATION PURSUANT TO RULE 13a-14(a) OR 15d-14(a)

AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Anshooman Aga, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Harsco Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared; 

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and 

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting. 

May 3, 2022

/s/ ANSHOOMAN AGA

Anshooman Aga

Senior Vice President and Chief Financial Officer

EX-32

Exhibit 32

HARSCO CORPORATION

CERTIFICATIONS PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Harsco Corporation (the "Company") on Form 10-Q for the period ending March 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), we certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of our knowledge:

(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

May 3, 2022

/s/ F. NICHOLAS GRASBERGER III

F. Nicholas Grasberger III

Chairman, President and Chief Executive Officer

/s/ ANSHOOMAN AGA

Anshooman Aga

Senior Vice President and Chief Financial Officer

A signed original of this written statement required by Section 906 has been provided to Harsco Corporation and will be retained by Harsco Corporation and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Cover Page - shares	3 Months Ended
	Mar. 31, 2022	Apr. 29, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Entity File Number	001-03970
Entity Registrant Name	HARSCO CORP
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	23-1483991
Entity Address, Address Line One	350 Poplar Church Road,
Entity Address, City or Town	Camp Hill,
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	17011
City Area Code	717
Local Phone Number	763-7064
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Title of 12(b) Security	Common stock, par value $1.25 per share
Trading Symbol	HSC
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		79,417,543
Entity Central Index Key	0000045876
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false

XML

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 85,216	$ 82,908
Restricted cash	4,337	4,220
Trade accounts receivable, net	385,871	377,881
Other receivables	26,128	33,059
Inventories	76,854	70,493
Prepaid expenses	32,393	31,065
Current portion of assets held-for-sale	268,590	265,413
Other current assets	13,096	9,934
Total current assets	892,485	874,973
Property, plant and equipment, net	654,765	653,913
Right-of-use assets, net	96,007	101,576
Goodwill	878,935	883,109
Intangible assets, net	393,733	402,801
Deferred income tax assets	18,207	17,883
Assets held-for-sale	66,518	71,234
Other assets	50,809	48,419
Total assets	3,051,459	3,053,908
Current liabilities:
Short-term borrowings	7,292	7,748
Current maturities of long-term debt	17,379	10,226
Accounts payable	189,896	186,126
Accrued compensation	41,780	48,165
Income taxes payable	4,085	6,378
Current portion of operating lease liabilities	25,055	25,590
Current portion of liabilities of assets held-for-sale	168,412	161,999
Other current liabilities	139,661	155,159
Total current liabilities	593,560	601,391
Long-term debt	1,422,384	1,359,446
Retirement plan liabilities	73,710	93,693
Operating lease liabilities	69,563	74,571
Liabilities of assets held-for-sale	8,326	8,492
Environmental liabilities	27,565	28,435
Deferred tax liabilities	26,832	33,826
Other liabilities	48,424	48,284
Total liabilities	2,270,364	2,248,138
COMMITMENTS AND CONTINGENCIES
HARSCO CORPORATION STOCKHOLDERS' EQUITY
Common stock	145,261	144,883
Additional paid-in capital	218,779	215,528
Accumulated other comprehensive loss	(547,649)	(560,139)
Retained earnings	1,754,671	1,794,510
Treasury stock	(848,254)	(846,622)
Total Harsco Corporation stockholders’ equity	722,808	748,160
Noncontrolling interests	58,287	57,610
Total equity	781,095	805,770
Total liabilities and equity	$ 3,051,459	$ 3,053,908

XML

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenues from continuing operations:
Total revenues	$ 452,797	$ 447,265
Costs and expenses from continuing operations:
Selling, general and administrative expenses	69,153	71,614
Research and development expenses	56	157
Other (income) expenses, net	(1,179)	(991)
Total costs and expenses	445,049	428,147
Operating income from continuing operations	7,748	19,118
Interest income	644	547
Interest expense	(15,092)	(16,256)
Unused debt commitment fees, amendment fees and loss on extinguishment of debt	(532)	(5,258)
Defined benefit pension income	2,410	3,934
Income (loss) from continuing operations before income taxes and equity income	(4,822)	2,085
Income tax benefit (expense) from continuing operations	(1,221)	(2,101)
Equity income (loss) of unconsolidated entities, net	(131)	(119)
Income (loss) from continuing operations	(6,174)	(135)
Discontinued operations:
Income (loss) from discontinued businesses	(39,097)	3,364
Income tax benefit (expense) from discontinued businesses	6,591	(1,664)
Income (loss) from discontinued operations, net of tax	(32,506)	1,700
Net income (loss)	(38,680)	1,565
Less: Net income attributable to noncontrolling interests	(1,159)	(1,430)
Net income (loss) attributable to Harsco Corporation	(39,839)	135
Amounts attributable to Harsco Corporation common stockholders:
Income (loss) from continuing operations, net of tax	(7,333)	(1,565)
Income (loss) from discontinued operations, net of tax	(32,506)	1,700
Net income (loss) attributable to Harsco Corporation	$ (39,839)	$ 135
Weighted-average shares of common stock outstanding	79,363	79,088
Basic earnings (loss) per common share attributable to Harsco Corporation common stockholders:
Continuing operations (in dollars per share)	$ (0.09)	$ (0.02)
Discontinued operations (in dollars per share)	(0.41)	0.02
Basic earnings (loss) per share attributable to Harsco Corporation common stockholders (in dollars per share)	$ (0.50)	$ 0
Diluted weighted-average shares of common stock outstanding (in shares)	79,363	79,088
Diluted earnings (loss) per common share attributable to Harsco Corporation common stockholders:
Continuing operations (in dollars per share)	$ (0.09)	$ (0.02)
Discontinued operations (in dollars per share)	(0.41)	0.02
Diluted earnings (loss) per share attributable to Harsco Corporation common stockholders (in dollars per share)	$ (0.50)	$ 0
Products And Services, Service Revenue
Revenues from continuing operations:
Total revenues	$ 418,435	$ 414,339
Costs and expenses from continuing operations:
Cost of services sold	346,357	329,853
Product Revenues
Revenues from continuing operations:
Total revenues	34,362	32,926
Costs and expenses from continuing operations:
Cost of services sold	$ 30,662	$ 27,514

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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (38,680)	$ 1,565
Other comprehensive income (loss):
Foreign currency translation adjustments, net of deferred income taxes	(2,847)	(3,296)
Net loss on cash flow hedging instruments, net of deferred income taxes	1,140	689
Pension liability adjustments, net of deferred income taxes	13,718	3,819
Unrealized gain (loss) on marketable securities, net of deferred income taxes	(3)	17
Total other comprehensive income (loss)	12,008	1,229
Total comprehensive income (loss)	(26,672)	2,794
Less: Comprehensive (income) loss attributable to noncontrolling interests	(677)	(364)
Comprehensive income (loss) attributable to Harsco Corporation	$ (27,349)	$ 2,430

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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Foreign currency translation adjustments, deferred income taxes	$ (1,838)	$ 623
Net gain (loss) on cash flow hedging instruments, deferred income taxes	(330)	(144)
Pension liability adjustments, deferred income taxes	(352)	(338)
Unrealized gain (loss) on marketable securities, deferred income taxes	$ 0	$ (7)

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net income (loss)	$ (38,680)	$ 1,565
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	33,604	32,748
Amortization	8,586	8,967
Deferred income tax (benefit) expense	(4,275)	(3,421)
Equity (income) loss of unconsolidated entities, net	131	119
Dividends from unconsolidated entities	178	0
Loss on early extinguishment of debt	0	2,668
Other, net	259	1,128
Changes in assets and liabilities, net of acquisitions and dispositions of businesses:
Accounts receivable	(15,364)	(16,446)
Increase (Decrease) in Income Taxes Receivable	7,687	0
Inventories	(4,610)	407
Contract assets	4,843	(19,070)
Right-of-use assets	7,076	6,768
Accounts payable	1,655	(8,592)
Accrued interest payable	(7,393)	(7,320)
Accrued compensation	(5,692)	(1,541)
Advances on contracts	(7,808)	(9,698)
Operating lease liabilities	(7,063)	(6,750)
Retirement plan liabilities, net	(14,519)	(19,267)
Other assets and liabilities	7,070	14,562
Net cash used by operating activities	(34,315)	(23,173)
Cash flows from investing activities:
Purchases of property, plant and equipment	(32,958)	(27,382)
Proceeds from sales of assets	5,976	3,862
Expenditures for intangible assets	(54)	(68)
Net proceeds (payments) from settlement of foreign currency forward exchange contracts	1,061	(1,427)
Payments for settlements of interest rate swaps	1,062	0
Other investing activities, net	124	46
Net cash used by investing activities	(26,913)	(24,969)
Cash flows from financing activities:
Short-term borrowings, net	2,051	575
Current maturities and long-term debt:
Additions	72,005	434,873
Reductions	(2,566)	(374,530)
Stock-based compensation - Employee taxes paid	(1,377)	(2,485)
Payment of contingent consideration	(6,915)	0
Deferred financing costs	0	(6,525)
Other financing activities, net	0	(400)
Net cash provided by financing activities	63,198	51,508
Effect of exchange rate changes on cash and cash equivalents, including restricted cash	455	(710)
Net increase in cash and cash equivalents, including restricted cash	2,425	2,656
Cash and cash equivalents, including restricted cash, at beginning of period	87,128	79,669
Cash and cash equivalents, including restricted cash, at end of period	89,553	82,325
Supplemental Cash Flow Information [Abstract]
Change in accrual for purchases of property, plant and equipment included in accounts payable	$ (745)	$ 1,865

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CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock Issued	Common Stock Treasury	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Beginning balance at Dec. 31, 2020	$ 713,399	$ 144,288	$ (843,230)	$ 204,078	$ 1,797,759	$ (645,741)	$ 56,245
Increase (Decrease) in Stockholders' Equity
Net income (loss)	1,565				135		1,430
Total other comprehensive income	1,229					2,295	(1,066)
Stock appreciation rights exercised, net		9	(70)	(9)
Vesting of restricted stock units and other stock grants, net	(1,850)	312	(1,850)	(312)
Vesting of performance share units, net	(1,032)	155	(1,032)	(155)
Amortization of unearned portion of stock-based compensation, net of forfeitures	3,342			3,342
Ending balance at Mar. 31, 2021	716,583	144,764	(846,182)	206,944	1,797,894	(643,446)	56,609
Beginning balance at Dec. 31, 2021	805,770	144,883	(846,622)	215,528	1,794,510	(560,139)	57,610
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(38,680)				(39,839)		1,159
Total other comprehensive income	12,008					12,490	(482)
Vesting of restricted stock units and other stock grants, net	(1,632)	378	(1,632)	(378)
Amortization of unearned portion of stock-based compensation, net of forfeitures	3,629			3,629
Ending balance at Mar. 31, 2022	$ 781,095	$ 145,261	$ (848,254)	$ 218,779	$ 1,754,671	$ (547,649)	$ 58,287

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CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Stockholders' Equity [Abstract]
Total other comprehensive income, deferred income taxes	$ (2,520)	$ 134
Vesting of restricted stock units and other stock grants (in shares)	176,253	144,967
Stock appreciation rights exercised (in shares)		3,842
Stock Issued During Period, Shares, Other		69,127

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Basis of Presentation

3 Months Ended

Mar. 31, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation

The Company has prepared these unaudited condensed consolidated financial statements in accordance with U.S. GAAP for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the SEC. Accordingly, the unaudited condensed consolidated financial statements do not include all information and disclosure required by U.S. GAAP for annual financial statements. The December 31, 2021 Condensed Consolidated Balance Sheet information contained in this Quarterly Report on Form 10-Q was derived from the 2021 audited consolidated financial statements.  The unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements, including the notes thereto, included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021. In the opinion of management, all adjustments (all of which are of a normal recurring nature) that are necessary for a fair statement are reflected in the unaudited condensed consolidated financial statements. 

Reclassifications

Certain reclassifications have been made to prior year amounts to conform with current year classifications.

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Recently Adopted and Recently Issued Accounting Standards

3 Months Ended

Mar. 31, 2022

Accounting Changes and Error Corrections [Abstract]

Recently Adopted and Recently Issued Accounting Standards

Recently Adopted and Recently Issued Accounting Standards

The following accounting standards have been adopted in 2022:

On January 1, 2022, the Company adopted changes issued by the FASB which simplified the accounting for certain financial instruments with characteristics of liabilities and equity, including convertible instruments and contracts on an entity's own equity. The adoption of these changes did not have a material impact on the Company's condensed consolidated financial statements.

On January 1, 2022, the Company adopted changes issued by the FASB which improve the transparency of government assistance received by entities. Other than expanded annual disclosures, the adoption of these changes did not have a material impact on the Company's consolidated financial statements.

The following accounting standard has been issued and becomes effective for the Company at a future date:

In March 2020, the FASB issued changes that provide companies with optional guidance to ease the potential accounting burden associated with transitioning from reference rates that are expected to be discontinued. In response to the concerns about risks of IBORs and, particularly, the risk of cessation of LIBOR, regulators in several jurisdictions around the world have undertaken reference rate reform initiatives to identify alternative reference rates that are more observable or transaction-based and less susceptible to manipulation. The changes provide optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. In January 2021, the FASB issued additional clarification changes. The changes can be adopted no later than December 31, 2022 with early adoption permitted. Management does not believe these changes will have a material impact on the Company's consolidated financial statements.

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Dispositions

3 Months Ended

Mar. 31, 2022

Business Combinations [Abstract]

Dispositions

Dispositions

Harsco Rail Segment

In November 2021, the Company announced its intention to sell the Rail business. The sales process was ongoing during the first quarter of 2022. The former Harsco Rail Segment has historically been a separate reportable segment with primary operations in the United States, Europe and Asia Pacific.

The former Harsco Rail Segment's balance sheet positions as of March 31, 2022 and December 31, 2021 are presented as Assets held-for-sale and Liabilities of assets held-for-sale in the Condensed Consolidated Balance Sheets and are summarized as follows:

(in thousands)	March 31 2022		December 31 2021
Trade accounts receivable, net	$	41,546	$	33,689
Other receivables	4,615		4,740
Inventories	102,094		103,560
Current portion of contract assets	94,360		94,597
Other current assets	26,427		25,442
Property, plant and equipment, net	40,009		39,524
Right-of-use assets, net	2,664		3,108
Goodwill	13,026		13,026
Intangible assets, net	2,990		3,081
Deferred income tax assets	6,153		6,064
Other assets	1,224		6,432
Total Rail assets included in Assets held-for-sale	$	335,108	$	333,263
Accounts payable	$	42,874	$	46,076
Accrued compensation	3,023		2,171
Current portion of operating lease liabilities	1,456		1,619
Current portion of advances on contracts	53,732		62,401
Other current liabilities	67,327		49,732
Operating lease liabilities	1,474		1,775
Deferred tax liabilities	5,953		5,736
Other liabilities	898		981
Total Rail liabilities included in Liabilities of assets held-for-sale	$	176,737	$	170,491

The results of the former Harsco Rail Segment are presented as discontinued operations and, as such, have been excluded from both continuing operations and segment results for the three months ended March 31, 2022, and 2021. Certain key selected financial information included in Income (loss) from discontinued operations, net of tax for the former Harsco Rail Segment is as follows:

	Three Months Ended March 31
(In thousands)	2022		2021
Amounts directly attributable to the former Harsco Rail Segment:
Service revenues	$	6,710	$	10,109
Product revenues (a)	44,640		71,481
Cost of services sold	4,675		4,653
Cost of products sold	68,981		59,062
Income (loss) from discontinued businesses	(35,895)		5,155
Additional amounts allocated to the former Harsco Rail Segment:
Selling, general and administrative expenses (b)	$	1,649	$	—

(a) The decrease in product revenues for the three months ended March 31, 2022 as compared to the three months ended March 31, 2021 is principally due to the liquidated damages and penalties on certain long-term contracts, as discussed below.

(b) The Company has allocated directly attributable transaction costs to discontinued operations.

The Company has retained corporate overhead expenses previously allocated to the former Harsco Rail Segment of $1.0 million for each of the three months ended March 31, 2022, and 2021 as part of Selling, general and administrative expenses on the Condensed Consolidated Statements of Operations.

The Company's former Harsco Rail Segment is currently manufacturing highly-engineered equipment under large long-term fixed-price contracts with the SBB, the infrastructure manager for most of the railway in the U.K. ("Network Rail"), and the national railway company in Germany ("Deutsche Bahn"). As disclosed previously, in the fourth quarter of 2021, the Company recognized an estimated forward loss provision of $33.4 million related to these contracts. In the first quarter of 2022, the Company encountered continued delays and additional costs in the build of the machines. For the Network Rail contracts, the Company encountered additional supply chain delays in the build of the initial machine, and there were further changes to the production schedule based on the manufacturing experience gained from assembling the first unit during the quarter which had a cascading effect on the delivery schedule of remaining machines. As a result, the Company recorded a $24.2 million forward estimated loss provision for additional estimated contractual liquidated damages. The Company continues to negotiate with Network Rail regarding a reduction to these liquidated damages, which could result in additional favorable or unfavorable adjustments in future periods. For the Deutsche Bahn contract, on March 8, 2022 a European-based supplier of critical components to the project indicated it would be significantly late on the delivery of these components to the project, which has the impact of delaying the overall delivery schedule for the project. As a result, the Company recorded an additional $7.4

million estimated forward loss provision due principally to the estimated contractual penalties that would be triggered by this delay. For the second SBB contract, the Company recorded an additional $3.5 million forward estimated loss provision due to additional supply chain delays and cost overruns. The estimated forward loss provision represents the Company's best estimate based on currently available information. It is possible that the Company's overall estimate of liquidated damages, penalties and costs to complete these contracts may change, which would result in an additional estimated forward loss provision at such time.

The first contract with SBB is complete, and the second contract is 79% complete as of March 31, 2022. The contracts with Network Rail and Deutsche Bahn are 45% and 22% complete, respectively, as of March 31, 2022.

The following is selected financial information included on the Condensed Consolidated Statements of Cash Flows attributable to the former Harsco Rail Segment:

	Three Months Ended March 31
(In thousands)	2022		2021
Non-cash operating items
Depreciation and amortization	$	—	$	1,296
Cash flows from investing activities
Purchases of property, plant and equipment	506		365

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Accounts Receivable (Notes)

3 Months Ended

Mar. 31, 2022

Receivables [Abstract]

Accounts and Nontrade Receivable [Text Block]

Accounts Receivable and Note Receivable

Accounts receivable consist of the following:

(In thousands)	March 31 2022		December 31 2021
Trade accounts receivable	$	392,198	$	385,143
Less: Allowance for expected credit losses	(6,327)		(7,262)
Trade accounts receivable, net	$	385,871	$	377,881
Other receivables (a)	$	26,128	$	33,059

(a) Other receivables include employee receivables, insurance receivable, tax claims and refunds and other miscellaneous items not included in Trade accounts receivable, net.

The provision for expected credit losses related to trade accounts receivable was as follows:

	Three Months Ended
	March 31
(In thousands)	2022		2021
Provision for expected credit losses and doubtful accounts related to trade accounts receivable	$	325	$	654

At March 31, 2022, $6.5 million of the Company's trade accounts receivable were past due by twelve months or more, with $3.5 million of this amount reserved. Collection of the remaining balance is still ultimately expected.

In January 2020 the Company sold IKG for $85.0 million including cash and a note receivable, subject to post-closing adjustments. The note receivable from the buyer has a face value of $40.0 million, bearing interest at 2.50%, that is paid in kind and matures on January 31, 2027. Any unpaid principal, along with any accrued but unpaid interest is payable at maturity. Prepayment is required in case of a change in control or a percentage of excess cash flow, as defined in the note receivable agreement. Because there are no scheduled payments under the terms of the note receivable, the balance is not classified as current as of March 31, 2022 and is included in the caption Other assets on the Condensed Consolidated Balance Sheet. The initial fair value of the note receivable was $34.3 million which was calculated using an average of various discounted cash flow scenarios based on anticipated timing of repayments (Level 3) and was a non-cash transaction. The note receivable is subsequently measured at amortized cost. Key inputs into the valuation model include: projected timing and amount of cash flows, pro forma debt rating, option-adjusted spread and U.S. Treasury spot rate. At March 31, 2022 the amortized cost of the note receivable was $31.4 million, compared with a fair value of $31.8 million.

(In thousands)	March 31 2022		December 31 2021
Note receivable	$	31,425	$	31,025

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Inventories

3 Months Ended

Mar. 31, 2022

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories consist of the following:

(In thousands)	March 31 2022		December 31 2021
Finished goods	$	7,856	$	8,323
Work-in-process	5,963		5,393
Raw materials and purchased parts	22,276		21,188
Stores and supplies	40,759		35,589
Total inventories	$	76,854	$	70,493

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Property, Plant and Equipment

3 Months Ended

Mar. 31, 2022

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, Plant and Equipment

Property, plant and equipment consist of the following:

(In thousands)	March 31 2022		December 31 2021
Land	$	73,071	$	73,067
Land improvements	16,934		16,970
Buildings and improvements	224,746		221,236
Machinery and equipment	1,532,183		1,507,214
Uncompleted construction	59,612		63,816
Gross property, plant and equipment	1,906,546		1,882,303
Less: Accumulated depreciation	(1,251,781)		(1,228,390)
Property, plant and equipment, net	$	654,765	$	653,913

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Leases

3 Months Ended

Mar. 31, 2022

Leases [Abstract]

Leases

Leases

The components of lease expense were as follows:

	Three Months Ended
	March 31
(In thousands)	2022		2021
Finance leases:
Amortization expense	$	978	$	475
Interest on lease liabilities	183		102
Operating leases	8,069		7,896
Variable and short-term lease expense	13,343		12,102
Sublease income	(2)		(49)
Total lease expense from continuing operations	$	22,571	$	20,526

As of March 31, 2022, the Company had additional operating leases for property and equipment that had not yet commenced with estimated operating lease obligations of approximately $16 million to be recognized upon anticipated lease commencement in the second and third quarters of 2022.

Leases

Leases

The components of lease expense were as follows:

	Three Months Ended
	March 31
(In thousands)	2022		2021
Finance leases:
Amortization expense	$	978	$	475
Interest on lease liabilities	183		102
Operating leases	8,069		7,896
Variable and short-term lease expense	13,343		12,102
Sublease income	(2)		(49)
Total lease expense from continuing operations	$	22,571	$	20,526

As of March 31, 2022, the Company had additional operating leases for property and equipment that had not yet commenced with estimated operating lease obligations of approximately $16 million to be recognized upon anticipated lease commencement in the second and third quarters of 2022.

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Goodwill and Other Intangible Assets

3 Months Ended

Mar. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

Goodwill and Other Intangible Assets

The Company tests for goodwill impairment annually, or more frequently if indicators of impairment exist, or if a decision is made to dispose of a business.  The Company performs its annual goodwill impairment test as of October 1 and monitors for triggering events on an ongoing basis.  The Company determined that, as of March 31, 2022, no interim goodwill impairment testing was necessary.  However, a continued economic downturn, including continued cost inflation and labor shortages could impact the Company's future projected cash flows used to estimate fair value, and/or result in a sustained decrease in the Company's share price, which could result in an impairment charge in a future period.

Because of the lower-than-expected results for the Altek Group of the Harsco Environmental Segment for 2021 due to the timing of customer orders, the Company tested Altek's asset group's recoverability in the fourth quarter of 2021 and no impairment was recorded. The long-lived assets (other than goodwill) of the Altek Group within the Harsco Environmental Segment primarily consist of intangible assets which have a carrying value of approximately $36 million at March 31, 2022. The Company has not identified any triggering events for the Altek asset group in the first quarter of 2022. However, if actual results prove inconsistent with the Company’s assumptions and judgments of the projected cash flows, it could result in impairment of the Altek intangible assets in future periods.

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Debt and Credit Agreements

3 Months Ended

Mar. 31, 2022

Debt Disclosure [Abstract]

Debt and Credit Agreements

Debt and Credit Agreements

On February 22, 2022, the Company amended its Senior Credit Facilities to reset the levels of the net debt to consolidated adjusted EBITDA ratio covenant. As a result of this amendment, the net debt to consolidated adjusted EBITDA ratio covenant was set at 5.75 for the quarter ending March 31, 2022, and then decreases quarterly by 0.25 until reaching 4.00 for the quarter ending December 31, 2023 and thereafter. In addition, upon closing on the divestiture of the former Harsco Rail Segment, the net debt to consolidated adjusted EBITDA ratio covenant will decrease by an additional 0.25, provided, however, it will not go below 4.00.

During the three months ended March 31, 2022 and 2021, the Company recognized total expenses of $0.5 million and $5.3 million, respectively, related to the amended Senior Secured Credit Facilities in the caption Unused debt commitment fees, amendment fees and loss on extinguishment of debt on the Condensed Consolidated Statements of Operations.

Long-term debt consists of the following:

(In thousands)	March 31 2022		December 31 2021
Senior Secured Credit Facilities:
New Term Loan	$	496,250	$	497,500
Revolving Credit Facility	434,000		362,000
5.75% Notes, due July 31, 2027	500,000		500,000
Other financing payable (including finance leases) in varying amounts	27,047		28,389
Total debt obligations	1,457,297		1,387,889
Less: deferred financing costs	(17,534)		(18,217)
Total debt obligations, net of deferred financing costs	1,439,763		1,369,672
Less: current maturities of long-term debt	(17,379)		(10,226)
Long-term debt	$	1,422,384	$	1,359,446

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Employee Benefit Plans

3 Months Ended

Mar. 31, 2022

Retirement Benefits [Abstract]

Employee Benefit Plans

Employee Benefit Plans

	Three Months Ended
	March 31
Defined Benefit Pension Plan Income	U.S. Plans				International Plans
(In thousands)	2022		2021		2022		2021
Service cost	$	—	$	—	$	432	$	462
Interest cost	1,429		1,203		4,394		3,177
Expected return on plan assets	(2,699)		(3,050)		(10,384)		(11,331)
Recognized prior service costs	—		—		120		127
Recognized losses	1,183		1,385		3,544		4,563
Defined benefit pension plan income	$	(87)	$	(462)	$	(1,894)	$	(3,002)

	Three Months Ended
Company Contributions	March 31
(In thousands)	2022		2021
Defined benefit pension plans (U.S.)	$	446	$	2,866
Defined benefit pension plans (International)	11,357		12,622
Multiemployer pension plans	457		440
Defined contribution pension plans	3,794		3,379

The Company's estimate of expected contributions to be paid during the remainder of 2022 for the U.S. and international defined benefit pension plans is $1.3 million and $12.6 million, respectively.

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Income Taxes	3 Months Ended
	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income tax expense from continuing operations for the three months ended March 31, 2022 and March 31, 2021 was $1.2 million and $2.1 million, respectively. Income tax expense decreased in 2022 primarily due to change in geographic mix of income. The $1.2 million income tax expense on the $4.8 million pre-tax losses for the three months ended March 31, 2022 is due to pretax losses in various foreign jurisdictions where no tax benefit is recorded. The reserve for uncertain tax positions at March 31, 2022 was $4.9 million, including interest and penalties.  Within the next twelve months, it is reasonably possible that $0.4 million unrecognized income tax benefits will be recognized upon settlement of tax examinations and the expiration of various statutes of limitations.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2022

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Environmental        

The Company is involved in a number of environmental remediation investigations and cleanups and, along with other companies, has been identified as a “potentially responsible party” for certain byproduct disposal sites.  While each of these matters is subject to various uncertainties, it is probable that the Company will agree to make payments toward funding certain of these activities, and it is possible that some of these matters will be decided unfavorably to the Company.  The Company has evaluated its potential liability and its financial exposure is dependent upon such factors as the continuing evolution of environmental laws and regulatory requirements, the availability and application of technology, the allocation of cost among potentially responsible parties, the years of remedial activity required and the remediation methods selected. 

The Company evaluates its liability for future environmental remediation costs on a quarterly basis. Although actual costs to be incurred at identified sites in future periods may vary from the estimates (given inherent uncertainties in evaluating environmental exposures), the Company does not expect that any costs that are reasonably possible to be incurred by the Company in connection with environmental matters in excess of the amounts accrued would have a material adverse effect on the Company's financial condition, results of operations or cash flows.

The following table summarizes information related to the location and undiscounted amount of the Company's environmental liabilities:

(In thousands)	March 31 2022		December 31 2021
Current portion of environmental liabilities (a)	$	7,533	$	7,338
Long-term environmental liabilities	27,565		28,435
Total environmental liabilities	$	35,098	$	35,773

(a)    The current portion of environmental liabilities is included in the caption Other current liabilities on the Condensed Consolidated Balance Sheets.

Legal Proceedings

In the ordinary course of business, the company is a defendant or party to various claims and lawsuits, including those discussed below.

On March 28, 2018, the United States Environmental Protection Agency (the “EPA”) conducted an inspection of ESOL’s off-site waste management facility in Detroit, MI. On November 23, 2021, the EPA proposed a civil penalty of $390,092 as part of a proposed Administrative Consent Order for alleged improper air emissions at the site. The allegations in the proposed Administrative Consent Order and civil penalty relate exclusively to the period prior the Company’s purchase of the ESOL business. The Company is vigorously contesting the allegations. While it is the Company's position that any loss related to this issue will be recoverable under indemnity rights under the ESOL purchase agreement and representations and warranties insurance policies purchased by the Company, there can be no assurance that the Company's position will ultimately prevail.

On January 27, 2020, the U.S. EPA issued a Notice of Potential Liability to the Company, along with several other companies, concerning the Newtown Creek Superfund Site located in Kings and Queens Counties in New York. The Notice alleges certain facilities formerly owned or operated by subsidiaries of the Company may have resulted in the discharge of hazardous substances into Newtown Creek or its Dutch Kills tributary. The site has been subject to CERCLA response activities since approximately 2011. The U.S. EPA expects to propose a sitewide cleanup plan no sooner than 2024 and announced in July 2021 that it would defer its decision on a potential early action response for the lower two miles of the Creek until the sitewide studies are completed. The Company is one of approximately twenty (20) Potentially Responsible Parties that have received notices, though it is believed other PRPs may exist. The Company vigorously contests the allegations of the Notice and currently does not believe that this matter will have a material effect on the Company’s financial position or results from operations.

On June 25 and 26, 2018, the DTSC conducted a compliance enforcement inspection of ESOL’s facility in Rancho Cordova, California, which was then owned by Stericycle, Inc. On February 14, 2020, the DTSC filed an action in the Superior Court for the State of California, Sacramento Division, alleging violations of California’s Hazardous Waste Control Law and the facility’s hazardous waste permit arising from the inspection. On August 27, 2020 the DTSC issued a Notice of Denial of Hazardous Waste Facility Permit Application, denying the renewal of the facility's hazardous waste permit. On April 8, 2022, the DTSC denied the Company's appeal of the Notice of Denial. The Company has the ability to appeal this decision, and is currently reviewing the decision and its options. The Company has filed a Motion for a Temporary Restraining Order to stop the closure of the site pending its appeal of the DTSC's action. The DTSC investigation and compliance issues leading to the compliance tier assignment were ongoing well before the Company's acquisition of the ESOL business, and the Company was aware of the investigation and many of the issues raised in the investigation at the time of the purchase. Accordingly, the Company is indemnified for certain fines and other costs and expenses associated with this matter by Stericycle, Inc. As a result, the administrative appeal and public hearing process is led by Stericycle, Inc. The Company has not accrued any amounts in respect of these alleged violations and cannot estimate the reasonably possible loss or the range of reasonably possible losses that it may incur.

As previously disclosed, the Company has had ongoing meetings with the SCE over processing salt cakes, a processing byproduct, stored at the Al Hafeerah site. The Company’s Bahrain operations that produced the salt cakes has ceased operations. An Environmental Impact Assessment and Technical Feasibility Study for facilities to process the salt cakes was approved by the SCE during the first quarter of 2018. Commissioning of the facilities was completed during the third quarter of 2021 and the processing of the salt cakes has commenced. The current reserve of $6.9 million continues to represent the Company's best estimate of the ultimate costs to be incurred to resolve this matter. The Company continues to evaluate this reserve and any future change in estimated costs could be material to the Company’s results of operations in any one period.

On July 27, 2018 Brazil’s Federal and Rio de Janeiro State Public Prosecution Offices (MPF and MPE) filed a Civil Public Action against one of the Company's customers (CSN), the Company’s Brazilian subsidiary, the Municipality of Volta Redonda, Brazil, and the Instituto Estadual do Ambiente (local environmental protection agency) seeking the implementation of various measures to limit and reduce the accumulation of customer-owned slag at the site in Brazil. On August 6, 2018 the 3rd Federal Court in Volta Redonda granted the MPF and MPE an injunction against the same parties requiring, among other

things, CSN and the Company’s Brazilian subsidiary to limit the volume of slag sent to the site. Because the customer owns the site and the slag located on the site, the Company believes that complying with this injunction is the steel producer’s responsibility.  On March 18, 2019 the Court issued an order fining the Company 5,000 Brazilian reais per day (or approximately $1 thousand per day) and CSN 20,000 Brazilian reais per day (or approximately $4 thousand per day) until the requirements of the injunction are met. On November 1, 2019 the Court issued an additional order increasing the fines assessed to the Company to 25,000 Brazilian reais per day (or approximately $5 thousand per day) and raising the fines assessed to CSN to 100,000 Brazilian reais per day (or approximately $21 thousand per day). The Court also assessed an additional fine of 10,000,000 Brazilian reais (or approximately $2 million) against CSN and the Company jointly. The Company is appealing the fines and the underlying injunction.  Both the Company and CSN continue to have discussions with the Prosecution Offices and governmental authorities on the injunction and the possible resolution of the underlying case. The Company does not believe that a loss relating to this matter is probable or estimable at this point.

On October 19, 2018 local environmental authorities issued an enforcement action against the Company concerning the Company’s operations at a customer site in Ijmuiden, Netherlands. The enforcement action alleged violations of the Company’s environmental permit at the site, which restricts the release of any visible dust emissions. On January 12, 2022, the Administrative Supreme Court upheld the Company’s challenge of these enforcement actions as they relate to the slag tipping area of the site. As a result, all fines asserted against the Company to date have been invalidated and all fines paid to date have been reimbursed. This order is not appealable. On or about October 14, 2021, the Company received a subpoena and two indictments on this matter before the Amsterdam District Court in the Netherlands. The Amsterdam Public Prosecutor’s Office issued the two indictments against the Company, alleging violations in connection with dust releases and/or events alleged to have occurred in 2018 through May 2020 at the site. The action cites provisions which permit fines for the alleged infractions and seeks EURO 100,000 in fines with a smaller amount held in abeyance. On February 25, 2022, the Amsterdam District Court ruled that the Company was liable for only one alleged violation and that this alleged violation was unintentional. The court issued a fine of €5,000, to be held in abeyance. Both the Company and the Public Prosecutor’s Office have appealed this ruling. On February 2, 2022, the prosecutor announced that they would further investigate residents’ claims related to this matter. The Company is vigorously contesting all allegations against it and is also working with its customer to ensure the control of emissions. The Company has contractual indemnity rights from its customer that it believes will substantially cover any fines or penalties.

On March 22, 2022, the U.S. EPA issued a Notice of Intent to File an Administrative Complaint (NOI) alleging violations of the federal Emergency Planning and Community Right-to-Know Act at the Company’s facilities in Tacoma, WA and Kent, WA. The NOI relates exclusively or almost exclusively to the period when Stericycle owned and operated the sites. The NOI proposes a penalty of $3,000,000. The Company is currently reviewing the veracity of the allegations and the corresponding proposed penalty amount. While it is the Company’s position that it has recourse for some or all liabilities, if any, that arise from this matter under the ESOL purchase agreement and representations and warranties insurance policies purchased by the Company, there can be no assurances that the Company’s position will ultimately prevail.

On March 21, 2022, the Company received a draft penalty matrix from the PA DEP concerning alleged reporting, monitoring and related issues at the Company’s Hatfield, PA site prior to the time the Company acquired the site from Stericycle. The draft penalty matrix proposes a penalty of $1,000,000. The Company is currently reviewing the veracity of the allegations. While it is the Company’s position that it has recourse for some or all liabilities, if any, that arise from this matter under the ESOL purchase agreement and representations and warranties insurance policies purchased by the Company, there can be no assurances that the Company’s position will ultimately prevail.

On November 5, 2020, a worker suffered a fatal injury at a site owned by the Company’s customer, Gerdau Ameristeel US, Inc., in Midlothian, TX. Although the Company was not directly involved in the accident, the worker was employed by a sub-contractor of a sub-contractor of the Company. The worker’s family filed suit in the 125th Judicial District Court of Harris County, TX against multiple parties including the Company. The Company is vigorously defending the lawsuit and has insurance coverage subject to a $5 million deductible. Although some loss is probable, it is the Company's position that it has indemnity rights that would offset at least a significant portion of any loss within this deductible; however, there can be no assurances that the Company's position will ultimately prevail.

DEA Investigation

Prior to the Company’s acquisition of ESOL, Stericycle, Inc notified the Company that the DEA had served an administrative subpoena on Stericycle, Inc. and executed a search warrant at a facility in Rancho Cordova, California and an administrative inspection warrant at a facility in Indianapolis, Indiana. The Company has determined that the DEA and the DTSC have launched investigations involving, at least in part, the ESOL business of collecting, transporting, and destroying controlled substances from retail customers that transferred from Stericycle, Inc. to the Company. In connection with these investigations, the DEA also executed a search warrant on an ESOL facility in Austin Texas on July 2, 2020. The Company is cooperating

with these inquiries, which relate primarily to the period before the Company owned the ESOL business. Since the acquisition of the ESOL business, the Company has performed a vigorous review of ESOL’s compliance program related to controlled substances and has made material changes to the manner in which controlled substances are transported from retail customers to DEA-registered facilities for destruction. The Company has not accrued any amounts in respect of these investigations and cannot estimate the reasonably possible loss or the range of reasonably possible losses that it may incur, if any. Investigations of this type are, by their nature, uncertain and unpredictable. While it is the Company’s position that it has recourse for some or all liabilities, if any, that arise from these matters under the ESOL purchase agreement and representations and warranties insurance policies purchased by the Company, there can be no assurances that the Company’s position will ultimately prevail.

Brazilian Tax Disputes

The Company is involved in a number of tax disputes with federal, state and municipal tax authorities in Brazil. These disputes are at various stages of the legal process, including the administrative review phase and the collection action phase, and include assessments of fixed amounts of principal and penalties, plus interest charges that increase at statutorily determined amounts per month and are assessed on the aggregate amount of the principal and penalties. In addition, the losing party, at the collection action or court of appeals phase, could be subject to a charge to cover statutorily mandated legal fees, which are generally calculated as a percentage of the total assessed amounts due, inclusive of penalty and interest. Many of the claims relate to ICMS, services and social security tax disputes. The largest proportion of the assessed amounts relate to ICMS claims filed by the SPRA, encompassing the period from January 2002 to May 2005.

In October 2009, the Company received notification of the SPRA’s final administrative decision regarding the levying of ICMS in the State of São Paulo in relation to services provided to a customer in the State between January 2004 and May 2005.  As of March 31, 2022 the principal amount of the tax assessment from the SPRA with regard to this case is approximately $1.3 million, with penalty, interest and fees assessed to date increasing such amount by an additional $18.1 million.  On June 4, 2018 the Appellate Court of the State of Sao Paulo ruled in favor of the SPRA but ruled that the assessed penalty should be reduced to approximately $1.3 million. After calculating the interest accrued on the penalty, the Company estimates that this ruling reduces the current overall potential liability for this case to approximately $7.7 million. All such amounts include the effect of foreign currency translation. The Company has appealed the ruling in favor of the SPRA to the Superior Court of Justice. Due to multiple court precedents in the Company’s favor, as well as the Company’s ability to appeal, the Company does not believe a loss is probable.

Another ICMS tax case involving the SPRA refers to the tax period from January 2002 to December 2003. In December 2018 the administrative tribunal hearing the case upheld the Company's liability. The Company has appealed to the judicial phase. The aggregate amount assessed by the tax authorities in August 2005 was $5.3 million (the amounts with regard to this claim are valued as of the date of the assessment since it has not yet reached the collection phase), composed of a principal amount of $1.3 million, with penalty and interest assessed through that date increasing such amount by an additional $4.0 million.  On December 6, 2018 the administrative tribunal reduced the applicable penalties to $0.9 million. After calculating the interest accrued on the current penalty, the Company estimates that the current overall liability for this case to be approximately $5.8 million. All such amounts include the effect of foreign currency translation. Due to multiple court precedents in the Company's favor, the Company does not believe a loss is probable.

The Company continues to believe that sufficient coverage for these claims exists as a result of the indemnification obligations of the Company's customer and such customer’s pledge of assets in connection with the October 2009 notice, as required by Brazilian law.

On December 30, 2020, the Company received an assessment from the municipal authority in Ipatinga, Brazil alleging $2.2 million in unpaid service taxes from the period 2015 to 2020. After calculating the interest and penalties accrued, the Company estimates that the current overall potential liability for this case to be approximately $3.7 million. On January 18, 2021, the Company filed a challenge to the assessment. Due to the multiple defenses that are available, the Company does not believe a loss is probable.

The Company intends to continue its practice of vigorously defending itself against these tax claims under various alternatives, including judicial appeal. The Company will continue to evaluate its potential liability with regard to these claims on a quarterly basis; however, it is not possible to predict the ultimate outcome of these tax-related disputes in Brazil. No loss provision has been recorded in the Company's condensed consolidated financial statements for the disputes described above because the loss contingency is not deemed probable, and the Company does not expect that any costs that are reasonably possible to be incurred by the Company in connection with Brazilian tax disputes would have a material adverse effect on the Company's financial condition, results of operations or cash flows.

Brazilian Labor Disputes

The Company is subject to ongoing collective bargaining and individual labor claims in Brazil through the Harsco Environmental Segment which allege, among other things, the Company's failure to pay required amounts for overtime and vacation at certain sites. The Company is vigorously defending itself against these claims; however, litigation is inherently unpredictable, particularly in foreign jurisdictions. While the Company does not currently expect that the ultimate resolution of these claims will have a material adverse effect on the Company’s financial condition, results of operations or cash flows, it is not possible to predict the ultimate outcome of these labor-related disputes. As of March 31, 2022 and December 31, 2021 the Company has established reserves of $3.6 million and $3.2 million, respectively, on the Company's Condensed Consolidated Balance Sheets for amounts considered to be probable and estimable.

Other

The Company is named as one of many defendants (approximately 90 or more in most cases) in legal actions in the U.S. alleging personal injury from exposure to airborne asbestos over the past several decades.  In their suits, the plaintiffs have named as defendants, among others, many manufacturers, distributors and installers of numerous types of equipment or products that allegedly contained asbestos.

The Company believes that the claims against it are without merit. The Company has never been a producer, manufacturer or processor of asbestos fibers. Any asbestos-containing part of a Company product used in the past was purchased from a supplier and the asbestos encapsulated in other materials such that airborne exposure, if it occurred, was not harmful and is not associated with the types of injuries alleged in the pending actions.

At March 31, 2022 there were approximately 17,220 pending asbestos personal injury actions filed against the Company.  Of those actions, approximately 16,590 were filed in the New York Supreme Court (New York County), approximately 120 were filed in other New York State Supreme Court Counties and approximately 510 were filed in courts located in other states.

The complaints in most of those actions generally follow a form that contains a standard damages demand of $20 million or $25 million, regardless of the individual plaintiff’s alleged medical condition, and without identifying any specific Company product.

At March 31, 2022 approximately 16,550 of the actions filed in New York Supreme Court (New York County) were on the Deferred/Inactive Docket created by the court in December 2002 for all pending and future asbestos actions filed by persons who cannot demonstrate that they have a malignant condition or discernible physical impairment. The remaining approximately 40 cases in New York County are pending on the Active or In Extremis Docket created for plaintiffs who can demonstrate a malignant condition or physical impairment.

The Company has liability insurance coverage under various primary and excess policies that the Company believes will be available, if necessary, to substantially cover any liability that might ultimately be incurred in the asbestos actions referred to above. The costs and expenses of the asbestos actions are being paid by the Company's insurers.

In view of the persistence of asbestos litigation in the U.S., the Company expects to continue to receive additional claims in the future. The Company intends to continue its practice of vigorously defending these claims and cases. At March 31, 2022 the Company has obtained dismissal in approximately 28,380 cases by stipulation or summary judgment prior to trial.

It is not possible to predict the ultimate outcome of asbestos-related actions in the U.S. due to the unpredictable nature of this litigation, and no loss provision has been recorded in the Company's condensed consolidated financial statements because a loss contingency is not deemed probable or estimable. Despite this uncertainty, and although results of operations and cash flows for a given period could be adversely affected by asbestos-related actions, the Company does not expect that any costs that are reasonably possible to be incurred by the Company in connection with asbestos litigation would have a material adverse effect on the Company's financial condition, results of operations or cash flows.

The Company is subject to various other claims and legal proceedings covering a wide range of matters that arose in the ordinary course of business. In the opinion of management, all such matters are adequately covered by insurance or by established reserves, and, if not so covered, are without merit or are of such kind, or involve such amounts, as would not have a material adverse effect on the financial position, results of operations or cash flows of the Company.

Insurance liabilities are recorded when it is probable that a liability has been incurred for a particular event and the amount of loss associated with the event can be reasonably estimated. Insurance reserves have been estimated based primarily upon actuarial calculations and reflect the undiscounted estimated liabilities for ultimate losses, including claims incurred but not reported. Inherent in these estimates are assumptions that are based on the Company's history of claims and losses, a detailed analysis of existing claims with respect to potential value, and current legal and legislative trends. If actual claims differ from those projected by management, changes (either increases or decreases) to insurance reserves may be required and would be

recorded through income in the period the change was determined. When a recognized liability has been determined to be covered by third-party insurance, the Company records an insurance claim receivable to reflect the covered liability. Insurance claim receivables are included in Other receivables on the Company's Condensed Consolidated Balance Sheets. See Note 1, Summary of Significant Accounting Policies, to the consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021 for additional information on Accrued insurance and loss reserves.

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Reconciliation of Basic and Diluted Shares

3 Months Ended

Mar. 31, 2022

Earnings Per Share [Abstract]

Reconciliation of Basic and Diluted Shares

Reconciliation of Basic and Diluted Shares

	Three Months Ended
	March 31
(In thousands, except per share amounts)	2022		2021
Income (loss) from continuing operations attributable to Harsco Corporation common stockholders	$	(7,333)	$	(1,565)
Weighted-average shares outstanding:
Weighted-average shares outstanding - basic	79,363		79,088
Dilutive effect of stock-based compensation	—		—
Weighted-average shares outstanding - diluted	79,363		79,088
Earnings (loss) from continuing operations per common share, attributable to Harsco Corporation common stockholders:
Basic	$	(0.09)	$	(0.02)
Diluted	$	(0.09)	$	(0.02)

The following average outstanding stock-based compensation units were not included in the computation of diluted earnings per share because the effect was either antidilutive or the market conditions for the performance share units were not met:

	Three Months Ended
	March 31
(In thousands)	2022	2021
Restricted stock units	825	705
Stock appreciation rights	2,653	2,575
Performance share units	1,226	1,013

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Derivative Instruments, Hedging Activities and Fair Value

3 Months Ended

Mar. 31, 2022

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments, Hedging Activities and Fair Value

Derivative Instruments, Hedging Activities and Fair Value

Derivative Instruments and Hedging Activities

The Company uses derivative instruments, including foreign currency exchange forward contracts and interest rate swaps to manage certain foreign currency and interest rate exposures.  Derivative instruments are viewed as risk management tools by the Company and are not used for trading or speculative purposes. All derivative instruments are recorded on the Company's Condensed Consolidated Balance Sheets at fair value.  The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Hedge accounting generally provides for the matching of the timing of gain or loss recognition on the hedging instrument with the recognition of the earnings effect of the hedged forecasted transactions in a cash flow hedge. The Company may enter into derivative contracts that are intended to economically hedge certain of its risks, even though hedge accounting does not apply or the Company elects not to apply hedge accounting.

The Company primarily applies the market approach for recurring fair value measurements and endeavors to utilize the best available information.  Accordingly, the Company utilizes valuation techniques that maximize the use of observable inputs, such as forward rates, interest rates, the Company’s credit risk and counterparties’ credit risks, and which minimize the use of unobservable inputs.  The Company is able to classify fair value balances based on the ability to observe those inputs.  Foreign currency exchange forward contracts and interest rate swaps are based upon pricing models using market-based inputs (Level 2).  Model inputs can be verified and valuation techniques do not involve significant management judgment.

The fair value of outstanding derivative contracts recorded as assets and liabilities on the Company's Condensed Consolidated Balance Sheets was as follows:

(In thousands)	Balance Sheet Location	Fair Value of Derivatives Designated as Hedging Instruments		Fair Value of Derivatives Not Designated as Hedging Instruments		Total Fair Value
March 31, 2022
Asset derivatives (Level 2):
Foreign currency exchange forward contracts	Other current assets	$	1,038	$	3,235	$	4,273
Total		$	1,038	$	3,235	$	4,273
Liability derivatives (Level 2):
Foreign currency exchange forward contracts	Other current liabilities	$	216	$	1,957	$	2,173
Interest rate swaps	Other current liabilities	2,203		—		2,203
Total		$	2,419	$	1,957	$	4,376
December 31, 2021
Asset derivatives (Level 2):
Foreign currency exchange forward contracts	Other current assets	$	719	$	1,405	$	2,124
Total		$	719	$	1,405	$	2,124
Liability derivatives (Level 2):
Foreign currency exchange forward contracts	Other current liabilities	$	560	$	2,905	$	3,465
Interest rate swaps	Other current liabilities	4,157		—		4,157
Total		$	4,717	$	2,905	$	7,622

All of the Company's derivatives are recorded on the Condensed Consolidated Balance Sheets at gross amounts and not offset. All of the Company's interest rate swaps and certain foreign currency exchange forward contracts are transacted under ISDA documentation. Each ISDA master agreement permits the net settlement of amounts owed in the event of default. The Company's derivative assets and liabilities subject to enforceable master netting arrangements, if offset, would have resulted in a net liability of $0.3 million and $0.9 million at March 31, 2022 and December 31, 2021, respectively.

The effect of derivative instruments on the Company's Condensed Consolidated Statements of Operations and Condensed Consolidated Statements of Comprehensive Income (Loss) was as follows:

Derivatives Designated as Hedging Instruments

	Amount Recognized in OCI on Derivatives				Location of Amount Reclassified from  AOCI into Income	Amount Reclassified from AOCI into Income - Effective Portion or Equity
	Three Months Ended					Three Months Ended
	March 31					March 31
(In thousands)	2022		2021			2022		2021
Foreign currency exchange forward contracts	$	1,009	$	(1)	Income (loss) from discontinued businesses	$	(588)	$	(50)
Interest rate swaps	—		19		Interest expense	1,050		865
	$	1,009	$	18		$	462	$	815

The location and amount of gain (loss) recognized on the Company's Condensed Consolidated Statements of Operations was as follows:

	Three Months Ended
	March 31
	2022				2021
(in thousands)	Interest Expense		Income From Discontinued Businesses		Interest Expense		Income From Discontinued Businesses
Total amounts of line items presented in the Condensed Consolidated Statement of Operations in which the effects of derivatives designated as hedging instruments are recorded	$	(15,092)	$	(32,506)	$	(16,256)	$	1,700
Interest rate swaps:
Gain or (loss) reclassified from AOCI into income	(1,050)		—		(865)		—
Amount recognized in earnings due to ineffectiveness	891		—		—		—
Foreign exchange contracts:
Gain or (loss) reclassified from AOCI into income	—		588		—		50
Amount excluded from effectiveness testing recognized in earnings based on changes in fair value	—		(41)		—		28
Amount excluded from the effectiveness testing recognized in earnings based on an amortization approach	—		(2)		—		1

Derivatives Not Designated as Hedging Instruments

	Location of Gain (Loss) Recognized in Income on Derivatives	Amount of Gain (Loss) Recognized in Income on Derivatives (a)
		Three Months Ended
		March 31
(In thousands)		2022		2021
Foreign currency exchange forward contracts	Cost of services and products sold	$	3,838	$	4,744

(a)      These gains (losses) offset amounts recognized in cost of services and products sold principally as a result of intercompany or third party foreign currency         

exposures.

Foreign Currency Exchange Forward Contracts

The Company conducts business in multiple currencies and, accordingly, is subject to the inherent risks associated with foreign exchange rate movements.  Foreign currency-denominated assets and liabilities are translated into U.S. dollars at the exchange rates existing at the respective consolidated balance sheet dates, and income and expense items are translated at the average exchange rates during the respective periods. 

The Company uses derivative instruments to hedge cash flows related to foreign currency fluctuations.  Foreign currency exchange forward contracts outstanding are part of a worldwide program to minimize foreign currency exchange operating income and balance sheet exposure by offsetting foreign currency exposures of certain future payments between the Company and various subsidiaries, suppliers or customers.  The unsecured contracts are with major financial institutions.  The Company may be exposed to credit loss in the event of non-performance by the contract counterparties.  The Company evaluates the creditworthiness of the counterparties and does not expect default by them.  Foreign currency exchange forward contracts are used to hedge commitments, such as foreign currency debt, firm purchase commitments and foreign currency cash flows for certain export sales transactions.

Changes in the fair value of derivatives used to hedge foreign currency denominated balance sheet items are reported directly in earnings, along with offsetting transaction gains and losses on the items being hedged.  Derivatives used to hedge forecasted cash flows associated with foreign currency commitments may be accounted for as cash flow hedges, as deemed appropriate, if the criteria for hedge accounting are met.  Gains and losses on derivatives designated as cash flow hedges are deferred in AOCI, a separate component of equity, and reclassified to earnings in a manner that matches the timing of the earnings impact of the hedged transactions.  The ineffective portion of all hedges, if any, is recognized currently in earnings.

The recognized gains and losses offset amounts recognized in cost of services and products sold principally as a result of intercompany or third-party foreign currency exposures. At March 31, 2022 and December 31, 2021 the notional amounts of

foreign currency exchange forward contracts were $404.0 million and $425.8 million, respectively. These contracts are primarily denominated in British Pound Sterling and Euros and mature through March 2023.

In addition to foreign currency exchange forward contracts, the Company designates certain loans as hedges of net investments in international subsidiaries.  The Company recorded pre-tax net losses of $0.6 million for the three months ended March 31, 2022, and pre-tax net gains of $3.3 million for the three months ended March 31, 2021 in AOCI.

Interest Rate Swaps

The Company uses interest rate swaps in conjunction with certain variable rate debt issuances in order to secure a fixed interest rate.  Changes in the fair value attributed to the effect of the swaps’ interest spread and changes in the credit worthiness of the counter-parties are recorded in AOCI. 

At March 31, 2022, the Company has entered into a series of interest rate swaps that are in effect through 2022 and have the effect of converting $200.0 million of the Term Loan Facility from floating-rate to fixed-rate.  The fixed rates provided by the swaps replace the adjusted LIBOR rate in the interest calculation to 3.12% for 2022. In the fourth quarter of 2021, the interest rate swaps were deemed ineffective and thus the subsequent changes in fair value were recorded in earnings in the current period.

Fair Value of Other Financial Instruments

The carrying amounts of cash and cash equivalents, accounts receivable, accounts payable, accrued liabilities and short-term borrowings approximate fair value due to the short-term maturities of these assets and liabilities.  At March 31, 2022 and December 31, 2021 the total fair value of long-term debt (excluding deferred financing costs), including current maturities, was $1,423.7 million and $1,394.2 million, respectively, compared with a carrying value of $1,457.3 million and $1,387.9 million, respectively.  Fair values for debt are based on pricing models using market-based inputs (Level 2) for similar issues or on the current rates offered to the Company for debt of the same remaining maturities.

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Review of Operations by Segment

3 Months Ended

Mar. 31, 2022

Segment Reporting [Abstract]

Review of Operations by Segment

Review of Operations by Segment 

	Three Months Ended
	March 31
(In thousands)	2022		2021
Revenues From Continuing Operations
Harsco Environmental	$	262,051	$	257,986
Harsco Clean Earth	190,746		189,279
Total Revenues From Continuing Operations	$	452,797	$	447,265
Operating Income (Loss) From Continuing Operations
Harsco Environmental	$	18,267	$	25,935
Harsco Clean Earth	(1,297)		3,178
Corporate	(9,222)		(9,995)
Total Operating Income From Continuing Operations	$	7,748	$	19,118
Depreciation
Harsco Environmental	$	28,072	$	25,717
Harsco Clean Earth	5,101		5,337
Corporate	431		483
Total Depreciation	$	33,604	$	31,537
Amortization
Harsco Environmental	$	1,828	$	2,048
Harsco Clean Earth	6,075		6,083
Corporate (a)	683		751
Total Amortization	$	8,586	$	8,882
Capital Expenditures
Harsco Environmental	$	24,790	$	24,419
Harsco Clean Earth	6,696		2,530
Corporate	966		68
Total Capital Expenditures	$	32,452	$	27,017

(a)     Amortization expense on Corporate relates to the amortization of deferred financing costs.

Reconciliation of Segment Operating Income to Income (Loss) From Continuing Operations Before Income Taxes and Equity Income

	Three Months Ended
	March 31
(In thousands)	2022		2021
Segment operating income	$	16,970	$	29,113
General Corporate expense	(9,222)		(9,995)
Operating income from continuing operations	7,748		19,118
Interest income	644		547
Interest expense	(15,092)		(16,256)
Unused debt commitment fees, amendment fees and loss on extinguishment of debt	(532)		(5,258)
Defined benefit pension income	2,410		3,934
Income (loss) from continuing operations before income taxes and equity income	$	(4,822)	$	2,085

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Revenue Recognition

3 Months Ended

Mar. 31, 2022

Revenue from Contract with Customer [Abstract]

Revenue Recognition

Revenue Recognition

The Company recognizes revenues to depict the transfer of promised services and products to customers in an amount that reflects the consideration the Company expects to receive in exchange for those services or products. Service revenues include the Harsco Clean Earth Segment revenue and the service components of the Harsco Environmental Segment. Product revenues include portions of the Harsco Environmental Segment.

A summary of the Company's revenues by primary geographical markets as well as by key product and service groups is as follows:

	Three Months Ended
	March 31, 2022
(In thousands)	Harsco Environmental Segment		Harsco Clean Earth Segment		Consolidated Totals
Primary Geographical Markets (a):
North America	$	71,079	$	190,746	$	261,825
Western Europe	102,079		—		102,079
Latin America (b)	35,805		—		35,805
Asia-Pacific	28,068		—		28,068
Middle East and Africa	19,886		—		19,886
Eastern Europe	5,134		—		5,134
Total Revenues	$	262,051	$	190,746	$	452,797
Key Product and Service Groups:
Environmental services related to resource recovery for metals manufacturing and related logistical services	$	227,689	$	—	$	227,689
Ecoproducts	31,965		—		31,965
Environmental systems for aluminum dross and scrap processing	2,397		—		2,397
Waste processing, recycling, reuse and transportation solutions	—		190,746		190,746
Total Revenues	$	262,051	$	190,746	$	452,797

	Three Months Ended
	March 31, 2021
(In thousands)	Harsco Environmental Segment		Harsco Clean Earth Segment		Consolidated Totals
Primary Geographical Markets (a):
North America	$	67,181	$	189,279	$	256,460
Western Europe	112,171		—		112,171
Latin America (b)	30,653		—		30,653
Asia-Pacific	23,370		—		23,370
Middle East and Africa	20,121		—		20,121

	Three Months Ended
	March 31, 2021
(In thousands)	Harsco Environmental Segment		Harsco Clean Earth Segment		Consolidated Totals
Eastern Europe	4,490		—		4,490
Total Revenues	$	257,986	$	189,279	$	447,265
Key Product and Service Groups:
Environmental services related to resource recovery for metals manufacturing and related logistical services	$	225,060	$	—	$	225,060
Ecoproducts	29,785		—		29,785
Environmental systems for aluminum dross and scrap processing	3,141		—		3,141
Waste processing, recycling, reuse and transportation solutions	—		189,279		189,279
Total Revenues	$	257,986	$	189,279	$	447,265

(a)     Revenues are attributed to individual countries based on the location of the facility generating the revenue.

(b)     Includes Mexico.

The Company may receive payments in advance of earning revenue (advances on contracts), which is included in Other current liabilities and Other liabilities on the Condensed Consolidated Balance Sheets. The Company may recognize revenue in advance of being able to contractually invoice the customer (contract assets), which is included in Other current assets on the Condensed Consolidated Balance Sheets. Contract assets are transferred to Trade accounts receivable, net, when the right to payment becomes unconditional. Contract assets and advances on contracts are reported as a net position, on a contract-by-contract basis, at the end of each reporting period.

The Company had contract assets totaling $3.7 million and $3.1 million at March 31, 2022 and December 31, 2021, respectively. The increase is due principally to additional contract assets recognized in excess of the transfer of contract assets to accounts receivable. The Company had advances on contracts totaling $4.0 million and $4.1 million at March 31, 2022 and December 31, 2021, respectively. During the three months ended March 31, 2022, the Company recognized approximately $3 million of revenue related to amounts previously included in advances on contracts. During the three months ended March 31, 2021, the Company recognized approximately $2 million of revenue related to amounts previously included in advances on contracts.

At March 31, 2022 the Harsco Environmental Segment had remaining, fixed, unsatisfied performance obligations where the expected contract duration exceeds one year totaling $78.7 million. Of this amount, $20.6 million is expected to be fulfilled by March 31, 2023, $19.5 million by March 31, 2024, $18.7 million by March 31, 2025, $13.1 million by March 31, 2026 and the remainder thereafter. These amounts exclude any variable fees, fixed fees subject to indexation and any performance obligations expected to be satisfied within one year.

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Other (Income) Expenses, Net

3 Months Ended

Mar. 31, 2022

Other Income and Expenses [Abstract]

Other (Income) Expenses

Other (Income) Expenses, Net

The major components of this Condensed Consolidated Statements of Operations caption were as follows:

	Three Months Ended
	March 31
(In thousands)	2022		2021
Employee termination benefit costs	$	(308)	$	510
Other costs to exit activities	581		238
Impaired asset write-downs	59		22
Net gains	(1,812)		(1,693)
Other	301		(68)
Other (income) expenses, net	$	(1,179)	$	(991)

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Components of Accumulated Other Comprehensive Loss

3 Months Ended

Mar. 31, 2022

Equity [Abstract]

Components of Accumulated Other Comprehensive Loss

Components of Accumulated Other Comprehensive LossAOCI is included on the Condensed Consolidated Statements of Stockholders' Equity. The components of AOCI, net of the effect of income taxes, and activity for the three months ended March 31, 2021 and 2022 was as follows:

	Components of AOCI, Net of Tax
(In thousands)	Cumulative Foreign Exchange Translation Adjustments			Effective Portion of Derivatives Designated as Hedging Instruments			Cumulative Unrecognized Actuarial Losses on Pension Obligations			Unrealized Gain (Loss) on Marketable Securities		Total
Balance at December 31, 2020	$	(125,392)		$	(5,840)		$	(514,500)		$	(9)	$	(645,741)
OCI before reclassifications	(3,296)		(a)	119		(b)	(1,897)		(a)	17		(5,057)
Amounts reclassified from AOCI, net of tax	—			570			5,716			—		6,286
Total OCI	(3,296)			689			3,819			17		1,229
OCI attributable to noncontrolling interests	1,066			—			—			—		1,066
OCI attributable to Harsco Corporation	(2,230)			689			3,819			17		2,295
Balance at March 31, 2021	$	(127,622)		$	(5,151)		$	(510,681)		$	8	$	(643,446)

	Components of AOCI, Net of Tax
(In thousands)	Cumulative Foreign Exchange Translation Adjustments			Effective Portion of Derivatives Designated as Hedging Instruments			Cumulative Unrecognized Actuarial Losses on Pension Obligations			Unrealized Gain (Loss) on Marketable Securities		Total
Balance at December 31, 2021	$	(134,889)		$	(3,024)		$	(422,248)		$	22	$	(560,139)
OCI before reclassifications	(2,847)		(a)	802		(b)	9,184		(a)	(3)		7,136
Amounts reclassified from AOCI, net of tax				338			4,534					4,872
Total OCI	(2,847)			1,140			13,718			(3)		12,008
OCI attributable to noncontrolling interests	482											482
OCI attributable to Harsco Corporation	(2,365)			1,140			13,718			(3)		12,490
Balance at March 31, 2022	$	(137,254)		$	(1,884)		$	(408,530)		$	19	$	(547,649)

(a)    Principally foreign currency fluctuation.

(b)     Net change from periodic revaluations.

Amounts reclassified from AOCI were as follows:

(In thousands)	Three Months Ended				Location on the Condensed Consolidated Statements of Operations
	March 31
	2022		2021
Amortization of cash flow hedging instruments:
Foreign currency exchange forward contracts	$	(588)	$	(50)	Discontinued Operations
Interest rate swaps	1,050		865		Interest expense
Total before taxes	462		815
Income taxes	(124)		(245)
Total reclassification of cash flow hedging instruments, net of tax	$	338	$	570
Amortization of defined benefit pension items (c):
Actuarial losses	$	4,727	$	5,948	Defined benefit pension income
Prior service costs	120		127		Defined benefit pension income
Total before taxes	4,847		6,075
Income taxes	(313)		(359)
Total reclassification of defined benefit pension items, net of tax	$	4,534	$	5,716

(c)    These AOCI components are included in the computation of net periodic pension costs. See Note 10, Employee Benefit Plans, for additional details.

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Basis of Presentation (Policies)

3 Months Ended

Mar. 31, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation

The Company has prepared these unaudited condensed consolidated financial statements in accordance with U.S. GAAP for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the SEC. Accordingly, the unaudited condensed consolidated financial statements do not include all information and disclosure required by U.S. GAAP for annual financial statements. The December 31, 2021 Condensed Consolidated Balance Sheet information contained in this Quarterly Report on Form 10-Q was derived from the 2021 audited consolidated financial statements.  The unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements, including the notes thereto, included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021. In the opinion of management, all adjustments (all of which are of a normal recurring nature) that are necessary for a fair statement are reflected in the unaudited condensed consolidated financial statements. 

Reclassifications

Certain reclassifications have been made to prior year amounts to conform with current year classifications.

Recently Adopted and Recently Issued Accounting Standards

Recently Adopted and Recently Issued Accounting Standards

The following accounting standards have been adopted in 2022:

On January 1, 2022, the Company adopted changes issued by the FASB which simplified the accounting for certain financial instruments with characteristics of liabilities and equity, including convertible instruments and contracts on an entity's own equity. The adoption of these changes did not have a material impact on the Company's condensed consolidated financial statements.

On January 1, 2022, the Company adopted changes issued by the FASB which improve the transparency of government assistance received by entities. Other than expanded annual disclosures, the adoption of these changes did not have a material impact on the Company's consolidated financial statements.

The following accounting standard has been issued and becomes effective for the Company at a future date:

In March 2020, the FASB issued changes that provide companies with optional guidance to ease the potential accounting burden associated with transitioning from reference rates that are expected to be discontinued. In response to the concerns about risks of IBORs and, particularly, the risk of cessation of LIBOR, regulators in several jurisdictions around the world have undertaken reference rate reform initiatives to identify alternative reference rates that are more observable or transaction-based and less susceptible to manipulation. The changes provide optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. In January 2021, the FASB issued additional clarification changes. The changes can be adopted no later than December 31, 2022 with early adoption permitted. Management does not believe these changes will have a material impact on the Company's consolidated financial statements.

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Dispositions (Tables)

3 Months Ended

Mar. 31, 2022

Business Combinations [Abstract]

Balance sheet positions and financial information included in net income from discontinued operations and statements of cash flows

The former Harsco Rail Segment's balance sheet positions as of March 31, 2022 and December 31, 2021 are presented as Assets held-for-sale and Liabilities of assets held-for-sale in the Condensed Consolidated Balance Sheets and are summarized as follows:

(in thousands)	March 31 2022		December 31 2021
Trade accounts receivable, net	$	41,546	$	33,689
Other receivables	4,615		4,740
Inventories	102,094		103,560
Current portion of contract assets	94,360		94,597
Other current assets	26,427		25,442
Property, plant and equipment, net	40,009		39,524
Right-of-use assets, net	2,664		3,108
Goodwill	13,026		13,026
Intangible assets, net	2,990		3,081
Deferred income tax assets	6,153		6,064
Other assets	1,224		6,432
Total Rail assets included in Assets held-for-sale	$	335,108	$	333,263
Accounts payable	$	42,874	$	46,076
Accrued compensation	3,023		2,171
Current portion of operating lease liabilities	1,456		1,619
Current portion of advances on contracts	53,732		62,401
Other current liabilities	67,327		49,732
Operating lease liabilities	1,474		1,775
Deferred tax liabilities	5,953		5,736
Other liabilities	898		981
Total Rail liabilities included in Liabilities of assets held-for-sale	$	176,737	$	170,491

Certain key selected financial information included in Income (loss) from discontinued operations, net of tax for the former Harsco Rail Segment is as follows:

	Three Months Ended March 31
(In thousands)	2022		2021
Amounts directly attributable to the former Harsco Rail Segment:
Service revenues	$	6,710	$	10,109
Product revenues (a)	44,640		71,481
Cost of services sold	4,675		4,653
Cost of products sold	68,981		59,062
Income (loss) from discontinued businesses	(35,895)		5,155
Additional amounts allocated to the former Harsco Rail Segment:
Selling, general and administrative expenses (b)	$	1,649	$	—

(a) The decrease in product revenues for the three months ended March 31, 2022 as compared to the three months ended March 31, 2021 is principally due to the liquidated damages and penalties on certain long-term contracts, as discussed below.

(b) The Company has allocated directly attributable transaction costs to discontinued operations.

The following is selected financial information included on the Condensed Consolidated Statements of Cash Flows attributable to the former Harsco Rail Segment:

	Three Months Ended March 31
(In thousands)	2022		2021
Non-cash operating items
Depreciation and amortization	$	—	$	1,296
Cash flows from investing activities
Purchases of property, plant and equipment	506		365

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Accounts Receivable (Tables)

3 Months Ended

Mar. 31, 2022

Receivables [Abstract]

Schedule of accounts receivable

Accounts receivable consist of the following:

(In thousands)	March 31 2022		December 31 2021
Trade accounts receivable	$	392,198	$	385,143
Less: Allowance for expected credit losses	(6,327)		(7,262)
Trade accounts receivable, net	$	385,871	$	377,881
Other receivables (a)	$	26,128	$	33,059

(a) Other receivables include employee receivables, insurance receivable, tax claims and refunds and other miscellaneous items not included in Trade accounts receivable, net.

At March 31, 2022 the amortized cost of the note receivable was $31.4 million, compared with a fair value of $31.8 million.

(In thousands)	March 31 2022		December 31 2021
Note receivable	$	31,425	$	31,025

Schedule of provision for doubtful accounts related to trade accounts receivable

The provision for expected credit losses related to trade accounts receivable was as follows:

	Three Months Ended
	March 31
(In thousands)	2022		2021
Provision for expected credit losses and doubtful accounts related to trade accounts receivable	$	325	$	654

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Inventories (Tables)

3 Months Ended

Mar. 31, 2022

Inventory Disclosure [Abstract]

Schedule of inventories

Inventories consist of the following:

(In thousands)	March 31 2022		December 31 2021
Finished goods	$	7,856	$	8,323
Work-in-process	5,963		5,393
Raw materials and purchased parts	22,276		21,188
Stores and supplies	40,759		35,589
Total inventories	$	76,854	$	70,493

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Property, Plant and Equipment (Tables)

3 Months Ended

Mar. 31, 2022

Property, Plant and Equipment [Abstract]

Schedule of property, plant and equipment

Property, plant and equipment consist of the following:

(In thousands)	March 31 2022		December 31 2021
Land	$	73,071	$	73,067
Land improvements	16,934		16,970
Buildings and improvements	224,746		221,236
Machinery and equipment	1,532,183		1,507,214
Uncompleted construction	59,612		63,816
Gross property, plant and equipment	1,906,546		1,882,303
Less: Accumulated depreciation	(1,251,781)		(1,228,390)
Property, plant and equipment, net	$	654,765	$	653,913

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Leases (Tables)

3 Months Ended

Mar. 31, 2022

Leases [Abstract]

Components of Lease Expense and Supplemental Cash Flow and Additional Information

The components of lease expense were as follows:

	Three Months Ended
	March 31
(In thousands)	2022		2021
Finance leases:
Amortization expense	$	978	$	475
Interest on lease liabilities	183		102
Operating leases	8,069		7,896
Variable and short-term lease expense	13,343		12,102
Sublease income	(2)		(49)
Total lease expense from continuing operations	$	22,571	$	20,526

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Debt and Credit Agreements (Tables)

3 Months Ended

Mar. 31, 2022

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

Long-term debt consists of the following:

(In thousands)	March 31 2022		December 31 2021
Senior Secured Credit Facilities:
New Term Loan	$	496,250	$	497,500
Revolving Credit Facility	434,000		362,000
5.75% Notes, due July 31, 2027	500,000		500,000
Other financing payable (including finance leases) in varying amounts	27,047		28,389
Total debt obligations	1,457,297		1,387,889
Less: deferred financing costs	(17,534)		(18,217)
Total debt obligations, net of deferred financing costs	1,439,763		1,369,672
Less: current maturities of long-term debt	(17,379)		(10,226)
Long-term debt	$	1,422,384	$	1,359,446

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Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2022

Retirement Benefits [Abstract]

Schedule of net benefit costs

	Three Months Ended
	March 31
Defined Benefit Pension Plan Income	U.S. Plans				International Plans
(In thousands)	2022		2021		2022		2021
Service cost	$	—	$	—	$	432	$	462
Interest cost	1,429		1,203		4,394		3,177
Expected return on plan assets	(2,699)		(3,050)		(10,384)		(11,331)
Recognized prior service costs	—		—		120		127
Recognized losses	1,183		1,385		3,544		4,563
Defined benefit pension plan income	$	(87)	$	(462)	$	(1,894)	$	(3,002)

Schedule of contributions to pension plans

	Three Months Ended
Company Contributions	March 31
(In thousands)	2022		2021
Defined benefit pension plans (U.S.)	$	446	$	2,866
Defined benefit pension plans (International)	11,357		12,622
Multiemployer pension plans	457		440
Defined contribution pension plans	3,794		3,379

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Commitment and Contingencies (Tables)

3 Months Ended

Mar. 31, 2022

Commitments and Contingencies Disclosure [Abstract]

Schedule of Loss Contingencies by Contingency

The following table summarizes information related to the location and undiscounted amount of the Company's environmental liabilities:

(In thousands)	March 31 2022		December 31 2021
Current portion of environmental liabilities (a)	$	7,533	$	7,338
Long-term environmental liabilities	27,565		28,435
Total environmental liabilities	$	35,098	$	35,773

(a)    The current portion of environmental liabilities is included in the caption Other current liabilities on the Condensed Consolidated Balance Sheets.

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Reconciliation of Basic and Diluted Shares (Tables)

3 Months Ended

Mar. 31, 2022

Earnings Per Share [Abstract]

Reconciliation of basic and diluted shares

	Three Months Ended
	March 31
(In thousands, except per share amounts)	2022		2021
Income (loss) from continuing operations attributable to Harsco Corporation common stockholders	$	(7,333)	$	(1,565)
Weighted-average shares outstanding:
Weighted-average shares outstanding - basic	79,363		79,088
Dilutive effect of stock-based compensation	—		—
Weighted-average shares outstanding - diluted	79,363		79,088
Earnings (loss) from continuing operations per common share, attributable to Harsco Corporation common stockholders:
Basic	$	(0.09)	$	(0.02)
Diluted	$	(0.09)	$	(0.02)

Schedule of antidilutive securities excluded from computation of earnings per share

The following average outstanding stock-based compensation units were not included in the computation of diluted earnings per share because the effect was either antidilutive or the market conditions for the performance share units were not met:

	Three Months Ended
	March 31
(In thousands)	2022	2021
Restricted stock units	825	705
Stock appreciation rights	2,653	2,575
Performance share units	1,226	1,013

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Derivative Instruments, Hedging Activities and Fair Value (Tables)

3 Months Ended

Mar. 31, 2022

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of fair value of outstanding derivative contracts

The fair value of outstanding derivative contracts recorded as assets and liabilities on the Company's Condensed Consolidated Balance Sheets was as follows:

(In thousands)	Balance Sheet Location	Fair Value of Derivatives Designated as Hedging Instruments		Fair Value of Derivatives Not Designated as Hedging Instruments		Total Fair Value
March 31, 2022
Asset derivatives (Level 2):
Foreign currency exchange forward contracts	Other current assets	$	1,038	$	3,235	$	4,273
Total		$	1,038	$	3,235	$	4,273
Liability derivatives (Level 2):
Foreign currency exchange forward contracts	Other current liabilities	$	216	$	1,957	$	2,173
Interest rate swaps	Other current liabilities	2,203		—		2,203
Total		$	2,419	$	1,957	$	4,376
December 31, 2021
Asset derivatives (Level 2):
Foreign currency exchange forward contracts	Other current assets	$	719	$	1,405	$	2,124
Total		$	719	$	1,405	$	2,124
Liability derivatives (Level 2):
Foreign currency exchange forward contracts	Other current liabilities	$	560	$	2,905	$	3,465
Interest rate swaps	Other current liabilities	4,157		—		4,157
Total		$	4,717	$	2,905	$	7,622

Schedule of effect of derivative instruments

Derivatives Designated as Hedging Instruments

	Amount Recognized in OCI on Derivatives				Location of Amount Reclassified from  AOCI into Income	Amount Reclassified from AOCI into Income - Effective Portion or Equity
	Three Months Ended					Three Months Ended
	March 31					March 31
(In thousands)	2022		2021			2022		2021
Foreign currency exchange forward contracts	$	1,009	$	(1)	Income (loss) from discontinued businesses	$	(588)	$	(50)
Interest rate swaps	—		19		Interest expense	1,050		865
	$	1,009	$	18		$	462	$	815

The location and amount of gain (loss) recognized on the Company's Condensed Consolidated Statements of Operations was as follows:

	Three Months Ended
	March 31
	2022				2021
(in thousands)	Interest Expense		Income From Discontinued Businesses		Interest Expense		Income From Discontinued Businesses
Total amounts of line items presented in the Condensed Consolidated Statement of Operations in which the effects of derivatives designated as hedging instruments are recorded	$	(15,092)	$	(32,506)	$	(16,256)	$	1,700
Interest rate swaps:
Gain or (loss) reclassified from AOCI into income	(1,050)		—		(865)		—
Amount recognized in earnings due to ineffectiveness	891		—		—		—
Foreign exchange contracts:
Gain or (loss) reclassified from AOCI into income	—		588		—		50
Amount excluded from effectiveness testing recognized in earnings based on changes in fair value	—		(41)		—		28
Amount excluded from the effectiveness testing recognized in earnings based on an amortization approach	—		(2)		—		1

Derivatives Not Designated as Hedging Instruments

	Location of Gain (Loss) Recognized in Income on Derivatives	Amount of Gain (Loss) Recognized in Income on Derivatives (a)
		Three Months Ended
		March 31
(In thousands)		2022		2021
Foreign currency exchange forward contracts	Cost of services and products sold	$	3,838	$	4,744

(a)      These gains (losses) offset amounts recognized in cost of services and products sold principally as a result of intercompany or third party foreign currency         

exposures.

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Review of Operations by Segment (Tables)

3 Months Ended

Mar. 31, 2022

Segment Reporting [Abstract]

Schedule of operations by segment

	Three Months Ended
	March 31
(In thousands)	2022		2021
Revenues From Continuing Operations
Harsco Environmental	$	262,051	$	257,986
Harsco Clean Earth	190,746		189,279
Total Revenues From Continuing Operations	$	452,797	$	447,265
Operating Income (Loss) From Continuing Operations
Harsco Environmental	$	18,267	$	25,935
Harsco Clean Earth	(1,297)		3,178
Corporate	(9,222)		(9,995)
Total Operating Income From Continuing Operations	$	7,748	$	19,118
Depreciation
Harsco Environmental	$	28,072	$	25,717
Harsco Clean Earth	5,101		5,337
Corporate	431		483
Total Depreciation	$	33,604	$	31,537
Amortization
Harsco Environmental	$	1,828	$	2,048
Harsco Clean Earth	6,075		6,083
Corporate (a)	683		751
Total Amortization	$	8,586	$	8,882
Capital Expenditures
Harsco Environmental	$	24,790	$	24,419
Harsco Clean Earth	6,696		2,530
Corporate	966		68
Total Capital Expenditures	$	32,452	$	27,017

(a)     Amortization expense on Corporate relates to the amortization of deferred financing costs.

Reconciliation of segment operating income to income from continuing operations before income taxes and equity income

Reconciliation of Segment Operating Income to Income (Loss) From Continuing Operations Before Income Taxes and Equity Income

	Three Months Ended
	March 31
(In thousands)	2022		2021
Segment operating income	$	16,970	$	29,113
General Corporate expense	(9,222)		(9,995)
Operating income from continuing operations	7,748		19,118
Interest income	644		547
Interest expense	(15,092)		(16,256)
Unused debt commitment fees, amendment fees and loss on extinguishment of debt	(532)		(5,258)
Defined benefit pension income	2,410		3,934
Income (loss) from continuing operations before income taxes and equity income	$	(4,822)	$	2,085

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Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2022

Revenue from Contract with Customer [Abstract]

Summary of revenues by primary geographical markets

A summary of the Company's revenues by primary geographical markets as well as by key product and service groups is as follows:

	Three Months Ended
	March 31, 2022
(In thousands)	Harsco Environmental Segment		Harsco Clean Earth Segment		Consolidated Totals
Primary Geographical Markets (a):
North America	$	71,079	$	190,746	$	261,825
Western Europe	102,079		—		102,079
Latin America (b)	35,805		—		35,805
Asia-Pacific	28,068		—		28,068
Middle East and Africa	19,886		—		19,886
Eastern Europe	5,134		—		5,134
Total Revenues	$	262,051	$	190,746	$	452,797
Key Product and Service Groups:
Environmental services related to resource recovery for metals manufacturing and related logistical services	$	227,689	$	—	$	227,689
Ecoproducts	31,965		—		31,965
Environmental systems for aluminum dross and scrap processing	2,397		—		2,397
Waste processing, recycling, reuse and transportation solutions	—		190,746		190,746
Total Revenues	$	262,051	$	190,746	$	452,797

	Three Months Ended
	March 31, 2021
(In thousands)	Harsco Environmental Segment		Harsco Clean Earth Segment		Consolidated Totals
Primary Geographical Markets (a):
North America	$	67,181	$	189,279	$	256,460
Western Europe	112,171		—		112,171
Latin America (b)	30,653		—		30,653
Asia-Pacific	23,370		—		23,370
Middle East and Africa	20,121		—		20,121

	Three Months Ended
	March 31, 2021
(In thousands)	Harsco Environmental Segment		Harsco Clean Earth Segment		Consolidated Totals
Eastern Europe	4,490		—		4,490
Total Revenues	$	257,986	$	189,279	$	447,265
Key Product and Service Groups:
Environmental services related to resource recovery for metals manufacturing and related logistical services	$	225,060	$	—	$	225,060
Ecoproducts	29,785		—		29,785
Environmental systems for aluminum dross and scrap processing	3,141		—		3,141
Waste processing, recycling, reuse and transportation solutions	—		189,279		189,279
Total Revenues	$	257,986	$	189,279	$	447,265

(a)     Revenues are attributed to individual countries based on the location of the facility generating the revenue.

(b)     Includes Mexico.

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Other (Income) Expenses, Net (Tables)

3 Months Ended

Mar. 31, 2022

Other Income and Expenses [Abstract]

Schedule of other (income) expenses

The major components of this Condensed Consolidated Statements of Operations caption were as follows:

	Three Months Ended
	March 31
(In thousands)	2022		2021
Employee termination benefit costs	$	(308)	$	510
Other costs to exit activities	581		238
Impaired asset write-downs	59		22
Net gains	(1,812)		(1,693)
Other	301		(68)
Other (income) expenses, net	$	(1,179)	$	(991)

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Components of Accumulated Other Comprehensive Loss (Tables)

3 Months Ended

Mar. 31, 2022

Equity [Abstract]

Schedule of accumulated other comprehensive loss

The components of AOCI, net of the effect of income taxes, and activity for the three months ended March 31, 2021 and 2022 was as follows:

	Components of AOCI, Net of Tax
(In thousands)	Cumulative Foreign Exchange Translation Adjustments			Effective Portion of Derivatives Designated as Hedging Instruments			Cumulative Unrecognized Actuarial Losses on Pension Obligations			Unrealized Gain (Loss) on Marketable Securities		Total
Balance at December 31, 2020	$	(125,392)		$	(5,840)		$	(514,500)		$	(9)	$	(645,741)
OCI before reclassifications	(3,296)		(a)	119		(b)	(1,897)		(a)	17		(5,057)
Amounts reclassified from AOCI, net of tax	—			570			5,716			—		6,286
Total OCI	(3,296)			689			3,819			17		1,229
OCI attributable to noncontrolling interests	1,066			—			—			—		1,066
OCI attributable to Harsco Corporation	(2,230)			689			3,819			17		2,295
Balance at March 31, 2021	$	(127,622)		$	(5,151)		$	(510,681)		$	8	$	(643,446)

	Components of AOCI, Net of Tax
(In thousands)	Cumulative Foreign Exchange Translation Adjustments			Effective Portion of Derivatives Designated as Hedging Instruments			Cumulative Unrecognized Actuarial Losses on Pension Obligations			Unrealized Gain (Loss) on Marketable Securities		Total
Balance at December 31, 2021	$	(134,889)		$	(3,024)		$	(422,248)		$	22	$	(560,139)
OCI before reclassifications	(2,847)		(a)	802		(b)	9,184		(a)	(3)		7,136
Amounts reclassified from AOCI, net of tax				338			4,534					4,872
Total OCI	(2,847)			1,140			13,718			(3)		12,008
OCI attributable to noncontrolling interests	482											482
OCI attributable to Harsco Corporation	(2,365)			1,140			13,718			(3)		12,490
Balance at March 31, 2022	$	(137,254)		$	(1,884)		$	(408,530)		$	19	$	(547,649)

(a)    Principally foreign currency fluctuation.

(b)     Net change from periodic revaluations.

Reclassification out of accumulated other comprehensive income

Amounts reclassified from AOCI were as follows:

(In thousands)	Three Months Ended				Location on the Condensed Consolidated Statements of Operations
	March 31
	2022		2021
Amortization of cash flow hedging instruments:
Foreign currency exchange forward contracts	$	(588)	$	(50)	Discontinued Operations
Interest rate swaps	1,050		865		Interest expense
Total before taxes	462		815
Income taxes	(124)		(245)
Total reclassification of cash flow hedging instruments, net of tax	$	338	$	570
Amortization of defined benefit pension items (c):
Actuarial losses	$	4,727	$	5,948	Defined benefit pension income
Prior service costs	120		127		Defined benefit pension income
Total before taxes	4,847		6,075
Income taxes	(313)		(359)
Total reclassification of defined benefit pension items, net of tax	$	4,534	$	5,716

(c)    These AOCI components are included in the computation of net periodic pension costs. See Note 10, Employee Benefit Plans, for additional details.

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Basis of Presentation (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Restricted cash	$ 4,337	$ 4,220

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Dispositions - Schedule of Balance Sheet from Disposal of Harsco Rail Segment (Details) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Rail liabilities included in Liabilities of assets held-for-sale	$ 168,412	$ 161,999
Discontinued Operations, Held-for-sale | Harsco Rail Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Trade accounts receivable, net	41,546	33,689
Other receivables	4,615	4,740
Inventories	102,094	103,560
Current portion of contract assets	94,360	94,597
Other current assets	26,427	25,442
Property, plant and equipment, net	40,009	39,524
Right-of-use assets, net	2,664	3,108
Goodwill	13,026	13,026
Intangible assets, net	2,990	3,081
Deferred income tax assets	6,153	6,064
Other assets	1,224	6,432
Total Rail assets included in Assets held-for-sale	335,108	333,263
Accounts payable	42,874	46,076
Accrued compensation	3,023	2,171
Current portion of operating lease liabilities	1,456	1,619
Current portion of advances on contracts	53,732	62,401
Other current liabilities	67,327	49,732
Operating lease liabilities	1,474	1,775
Deferred tax liabilities	5,953	5,736
Other liabilities	898	981
Total Rail liabilities included in Liabilities of assets held-for-sale	$ 176,737	$ 170,491

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Dispositions - Schedule of Income (Loss) from Discontinued Operations Harsco Rail (Details) - Discontinued Operations, Held-for-sale - Harsco Rail Segment - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued businesses	$ (35,895)	$ 5,155
Selling, general and administrative expenses	1,649	0
Service revenues
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Revenue	6,710	10,109
Disposal Group, Including Discontinued Operation, Costs of Goods Sold	4,675	4,653
Product Revenues
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Revenue	44,640	71,481
Disposal Group, Including Discontinued Operation, Costs of Goods Sold	$ 68,981	$ 59,062

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Dispositions - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Contract estimated forward loss provision		$ 33.4
Network Rail
Business Acquisition [Line Items]
Contract estimated forward loss provision	$ 24.2
Percentage complete	45.00%
Deutsche Bahn
Business Acquisition [Line Items]
Contract estimated forward loss provision	$ 7.4
Percentage complete	22.00%
Contract 2 [Member] | SBB
Business Acquisition [Line Items]
Contract estimated forward loss provision	$ 3.5
Percentage complete	79.00%

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Dispositions - Summary of Cash Flow Information from Disposal of Harsco Rail Segment (Details) - Discontinued Operations, Held-for-sale - Harsco Rail Segment - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Business Acquisition [Line Items]
Depreciation and amortization	$ 0	$ 1,296
Purchases of property, plant and equipment	506	365
Disposal Group, Including Discontinued Operation, Corporate Overhead	$ 1,000	$ 1,000

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Accounts Receivable (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021	Jan. 01, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable	$ 392,198,000	$ 385,143,000
Accounts Receivable Greater than 12 Months Reserved	3,500,000
Receivable with Imputed Interest, Face Amount	$ 40,000,000
Note Receivable; Interest Rate; Stated percentage	2.50%
Receivables, Fair Value Disclosure	$ 31,800,000		$ 34,300,000
Greater than 12 months
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable	$ 6,500,000
Harsco Industrial IKG | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Selling price			$ 85,000,000

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Accounts Receivable - Schedule of Receivables (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable	$ 392,198	$ 385,143
Less: Allowance for expected credit losses	(6,327)	(7,262)
Trade accounts receivable, net	385,871	377,881
Other receivables	$ 26,128	$ 33,059

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Accounts Receivable - Schedule of Changes in Provisions For Allowance For Credit Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Receivables [Abstract]
Provision for expected credit losses and doubtful accounts related to trade accounts receivable	$ 325	$ 654

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Accounts Receivable - Schedule of Fair Value of Notes Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Jan. 01, 2020
Receivables [Abstract]
Receivable with Imputed Interest, Net Amount	$ 31,425	$ 31,025
Receivables, Fair Value Disclosure	$ 31,800		$ 34,300

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Inventories - Schedule of Inventory (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Inventory Disclosure [Abstract]
Finished goods	$ 7,856	$ 8,323
Work-in-process	5,963	5,393
Raw materials and purchased parts	22,276	21,188
Stores and supplies	40,759	35,589
Total inventories	$ 76,854	$ 70,493

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Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment
Gross property, plant and equipment	$ 1,906,546	$ 1,882,303
Less: Accumulated depreciation	(1,251,781)	(1,228,390)
Property, plant and equipment, net	654,765	653,913
Land
Property, Plant and Equipment
Gross property, plant and equipment	73,071	73,067
Land improvements
Property, Plant and Equipment
Gross property, plant and equipment	16,934	16,970
Buildings and improvements
Property, Plant and Equipment
Gross property, plant and equipment	224,746	221,236
Machinery and equipment
Property, Plant and Equipment
Gross property, plant and equipment	1,532,183	1,507,214
Construction in progress
Property, Plant and Equipment
Gross property, plant and equipment	$ 59,612	$ 63,816

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Property, Plant and Equipment - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment
Property, plant and equipment, net	$ 654,765	$ 653,913
CHINA | Harsco Environmental Segment
Property, Plant and Equipment
Property, plant and equipment, net	$ 20,000

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Leases - Narrative (Details) $ in Thousands	Mar. 31, 2022 USD ($)
Lessee, Lease, Description [Line Items]
Estimated ROU Assets And Lease Liabilities To Be Recognized	$ 16,000

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Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Finance leases:
Amortization expense	$ 978	$ 475
Interest on lease liabilities	183	102
Operating leases	8,069	7,896
Variable and short-term lease expense	13,343	12,102
Sublease Income	(2)	(49)
Total lease expense from continuing operations	$ 22,571	$ 20,526

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Goodwill and Other Intangible Assets - Narrative (Details) $ in Millions	Mar. 31, 2022 USD ($)
Harsco Environmental Segment | Altek Group
Intangible Assets, by category
Finite-Lived Intangible Assets, Gross	$ 36

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Debt and Credit Agreements - Narrative (Details) - Revolving Credit Facility $ in Millions	3 Months Ended		21 Months Ended
	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2023	Feb. 22, 2022
Debt Instrument [Line Items]
Net debt to consolidated adjusted EBITDA ratio	5.75
Net Debt to Consolidated Adjusted EBITDA Ratio Covenant, Increase (Decrease) Related To Divesture Of Business				0.25
Threshold Net Debt to Consolidated Adjusted EBITDA Ratio Covenant				4.00
Debt issuance expense	$ 0.5	$ 5.3
Forecast
Debt Instrument [Line Items]
Net debt to consolidated adjusted EBITDA ratio			4.00
Net Debt to Consolidated Adjusted EBITDA Ratio Covenant, Quarterly Increase (Decrease)			0.25

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Debt and Credit Agreements - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Debt Obligation	$ 1,457,297	$ 1,387,889
Less: deferred financing costs	(17,534)	(18,217)
Total debt obligations, net of deferred financing costs	1,439,763	1,369,672
Current maturities of long-term debt	(17,379)	(10,226)
Long-term debt	1,422,384	1,359,446
Other financing payable (including finance leases) in varying amounts
Debt Instrument [Line Items]
Debt Obligation	27,047	28,389
Term Loan Facility | New Term Loan
Debt Instrument [Line Items]
Debt Obligation	496,250	497,500
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Debt Obligation	434,000	362,000
Senior Notes | 5.75% Notes, due July 31, 2027
Debt Instrument [Line Items]
Debt Obligation	$ 500,000	$ 500,000

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Employee Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Defined benefit plans:
Multiemployer pension plans	$ 457	$ 440
Defined contribution pension plans	3,794	3,379
Pension Plan | U.S. Plans
Defined benefit plans:
Service cost	0	0
Interest cost	1,429	1,203
Expected return on plan assets	(2,699)	(3,050)
Recognized prior service costs	0	0
Recognized loss	1,183	1,385
Defined benefit pension plans net periodic pension cost (benefit)	(87)	(462)
Defined benefit pension plan	446	2,866
Anticipated contributions to defined benefit pension plans during the remainder of the fiscal year	1,300
Pension Plan | International Plans
Defined benefit plans:
Service cost	432	462
Interest cost	4,394	3,177
Expected return on plan assets	(10,384)	(11,331)
Recognized prior service costs	120	127
Recognized loss	3,544	4,563
Defined benefit pension plans net periodic pension cost (benefit)	(1,894)	(3,002)
Defined benefit pension plan	11,357	$ 12,622
Anticipated contributions to defined benefit pension plans during the remainder of the fiscal year	$ 12,600

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Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 1,221	$ 2,101
Unrecognized income tax benefits including interest and penalties	4,900
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 400

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Commitments and Contingencies (Details)		1 Months Ended		3 Months Ended
	Jun. 04, 2018 USD ($)	Dec. 31, 2018 USD ($)	Aug. 31, 2005 USD ($)	Mar. 31, 2022 USD ($) case claim defendant	Mar. 22, 2022 USD ($)	Mar. 21, 2022 USD ($)	Dec. 31, 2021 USD ($)	Nov. 23, 2021 USD ($)	Dec. 30, 2020 USD ($)	Nov. 05, 2020 USD ($)	Jan. 27, 2020 party	Nov. 01, 2019 USD ($)	Nov. 01, 2019 BRL (R$)	Mar. 18, 2019 USD ($)	Mar. 18, 2019 BRL (R$)
Commitments and Contingencies
Number Of Potentially Related Parties | party											20
Reserve for loss contingencies				$ 6,900,000
Penalties per day												$ 5,000	R$ 25,000	$ 1,000	R$ 5,000
Penalties												2,000,000	10,000,000
Current Portion of Environmental Liabilities				7,533,000			$ 7,338,000
Environmental liabilities				27,565,000			28,435,000
Total environmental liabilities				35,098,000			35,773,000
Proposed Civil Penalty								$ 390,092
BRAZIL
Commitments and Contingencies
Loss Contingencies, Unpaid Service Taxes									$ 2,200,000
Loss Contingencies, Overall Liability				3,700,000
Brazilian Tax Disputes - Jan 2004 through May 2005 | Sao Paulo State Revenue Authority
Commitments and Contingencies
Damages sought - interest, penalties and fees				18,100,000
Damages sought - principal				1,300,000
Loss contingency, reduced penalty	$ 1,300,000
Amount of damages sought	$ 7,700,000
Brazilian Tax Disputes - Jan 2002 through Dec 2003 | Sao Paulo State Revenue Authority
Commitments and Contingencies
Damages sought - interest, penalties and fees			$ 4,000,000
Damages sought - principal			1,300,000
Loss contingency, reduced penalty		$ 900,000
Amount of damages sought			$ 5,300,000
Loss contingency, reduced penalty, including interest		$ 5,800,000
Brazilian Labor Claims
Commitments and Contingencies
Loss contingency reserves				$ 3,600,000			$ 3,200,000
Other
Commitments and Contingencies
Approximate number of defendants that includes the company named in legal actions | defendant				90
Number of pending claims | claim				17,220
Number of claims dismissed to date by stipulation or summary judgment prior to trial | case				28,380
Other | Active or In Extremis docket
Commitments and Contingencies
Number of pending claims | claim				40
Other | Minimum
Commitments and Contingencies
Amount of damages sought				$ 20,000,000
Other | Maximum
Commitments and Contingencies
Amount of damages sought				$ 25,000,000
Other | New York County as managed by the New York Supreme Court
Commitments and Contingencies
Number of pending claims | case				16,590
Other | New York County as managed by the New York Supreme Court | Pending And Future Litigation, Deferred Or Inactive Docket
Commitments and Contingencies
Number of pending claims | claim				16,550
Other | New York State Supreme Court, Counties Excluding New York County
Commitments and Contingencies
Number of pending claims | case				120
Other | Courts Located In States Other Than New York
Commitments and Contingencies
Number of pending claims | case				510
U.S. EPA Notice of Intent
Commitments and Contingencies
Penalties					$ 3,000,000
Penalty Matrix From PA DEP
Commitments and Contingencies
Penalties						$ 1,000,000
Law Suit Related To A Worker's Fatal Injury
Commitments and Contingencies
Insurance Coverage, Deductible Amount										$ 5,000,000
CSN
Commitments and Contingencies
Penalties per day												$ 21,000	R$ 100,000	$ 4,000	R$ 20,000

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Commitments and Contingencies - Schedule of Loss Contingencies by Contingency (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Current Portion of Environmental Liabilities	$ 7,533,000	$ 7,338,000
Long-term environmental liabilities	27,565,000	28,435,000
Total environmental liabilities	$ 35,098,000	$ 35,773,000

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Reconciliation of Basic and Diluted Shares - Reconciliation of Basic and Diluted Shares (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Income (loss) from continuing operations, net of tax	$ (7,333)	$ (1,565)
Weighted-average shares outstanding - basic (in shares)	79,363	79,088
Dilutive effect of stock-based compensation (in shares)	0	0
Weighted-average shares outstanding - diluted (in shares)	79,363	79,088
Earnings (loss) from continuing operations per common share, attributable to Harsco Corporation common stockholders:
Basic (in dollars per share)	$ (0.09)	$ (0.02)
Diluted (in dollars per share)	$ (0.09)	$ (0.02)

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Reconciliation of Basic and Diluted Shares - Antidilutive Securities Excluded from Computation of Earnings per Share (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Restricted Stock Units (RSUs) [Member]
Antidilutive securities
Number of securities not included in computation of diluted earnings per share (in shares)	825	705
Stock appreciation rights
Antidilutive securities
Number of securities not included in computation of diluted earnings per share (in shares)	2,653	2,575
Performance share units
Antidilutive securities
Number of securities not included in computation of diluted earnings per share (in shares)	1,226	1,013

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Derivative Instruments, Hedging Activities and Fair Value - Fair Value of Outstanding Derivative Contracts (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Derivative contracts
Asset derivatives	$ 4,273	$ 2,124
Liability derivatives	4,376	7,622
Foreign currency exchange forward contracts | Other current assets
Derivative contracts
Asset derivatives	4,273	2,124
Foreign currency exchange forward contracts | Other current liabilities
Derivative contracts
Liability derivatives	2,173	3,465
Interest rate swaps | Other current liabilities
Derivative contracts
Liability derivatives	2,203	4,157
Fair Value of Derivatives Designated as Hedging Instruments
Derivative contracts
Asset derivatives	1,038	719
Liability derivatives	2,419	4,717
Fair Value of Derivatives Designated as Hedging Instruments | Foreign currency exchange forward contracts | Other current assets
Derivative contracts
Asset derivatives	1,038	719
Fair Value of Derivatives Designated as Hedging Instruments | Foreign currency exchange forward contracts | Other current liabilities
Derivative contracts
Liability derivatives	216	560
Fair Value of Derivatives Designated as Hedging Instruments | Interest rate swaps | Other current liabilities
Derivative contracts
Liability derivatives	2,203	4,157
Fair Value of Derivatives Not Designated as Hedging Instruments
Derivative contracts
Asset derivatives	3,235	1,405
Liability derivatives	1,957	2,905
Fair Value of Derivatives Not Designated as Hedging Instruments | Foreign currency exchange forward contracts | Other current assets
Derivative contracts
Asset derivatives	3,235	1,405
Fair Value of Derivatives Not Designated as Hedging Instruments | Foreign currency exchange forward contracts | Other current liabilities
Derivative contracts
Liability derivatives	1,957	2,905
Fair Value of Derivatives Not Designated as Hedging Instruments | Interest rate swaps | Other current liabilities
Derivative contracts
Liability derivatives	$ 0	$ 0

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Derivative Instruments, Hedging Activities and Fair Value - Narrative (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Foreign Currency Derivatives
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	$ 300,000			$ 900,000
Pre-tax net gains (losses) on certain loans designated as hedges of net investments in foreign subsidiaries	600,000	$ 3,300,000
Long-term debt	1,423,700,000			1,394,200,000
Foreign currency exchange forward contracts
Foreign Currency Derivatives
Derivative, Notional Amount	404,000,000			425,800,000
Term Loan Facility, Fixed-Rate | Term Loan
Foreign Currency Derivatives
Principal amount	200,000,000
LIBOR | Forecast | Term Loan Facility, Fixed-Rate | Term Loan
Foreign Currency Derivatives
Variable rate basis spread			3.12%
Reported Value Measurement
Foreign Currency Derivatives
Long-term debt	$ 1,457,300,000			$ 1,387,900,000

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Derivative Instruments, Hedging Activities and Fair Value - Effect of Derivative Instruments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Effect of derivative instruments
Amount Recognized in OCI on Derivatives	$ 1,009	$ 18
Amount Reclassified from AOCI into Income - Effective Portion or Equity	(462)	(815)
Foreign currency exchange forward contracts
Effect of derivative instruments
Amount Recognized in OCI on Derivatives	1,009	(1)
Foreign currency exchange forward contracts | Cost of services and products sold
Effect of derivative instruments
Amount Reclassified from AOCI into Income - Effective Portion or Equity	588	50
Interest rate swaps
Effect of derivative instruments
Amount Recognized in OCI on Derivatives	0	19
Interest rate swaps | Interest Expense
Effect of derivative instruments
Amount Reclassified from AOCI into Income - Effective Portion or Equity	$ 1,050	$ 865

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Derivative Instruments, Hedging Activities and Fair Value - Derivatives Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Derivative [Line Items]
Interest Expense	$ (15,092)	$ (16,256)
Gain or (loss) reclassified from AOCI into income	462	815
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	(32,506)	1,700
Interest Expense | Interest rate swaps
Derivative [Line Items]
Gain or (loss) reclassified from AOCI into income	(1,050)	(865)
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net	891	0
Interest Expense | Foreign exchange contracts
Derivative [Line Items]
Gain or (loss) reclassified from AOCI into income	0	0
Amount excluded from effectiveness testing recognized in earnings	0	0
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease) Based On Amortization Approach, before Adjustments and Tax	0	0
Cost of services and products sold | Foreign currency exchange forward contracts
Derivative [Line Items]
Gain or (loss) reclassified from AOCI into income	(588)	(50)
Amount of Gain Recognized in Income on Derivatives	3,838	4,744
Discontinued Operation, Gain (Loss) From Disposal Of Discontinued Operation | Interest rate swaps
Derivative [Line Items]
Gain or (loss) reclassified from AOCI into income	0	0
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net	0	0
Discontinued Operation, Gain (Loss) From Disposal Of Discontinued Operation | Foreign exchange contracts
Derivative [Line Items]
Gain or (loss) reclassified from AOCI into income	(588)	(50)
Amount excluded from effectiveness testing recognized in earnings	(41)	28
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease) Based On Amortization Approach, before Adjustments and Tax	$ (2)	$ 1

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Review of Operations by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operations by segment
Revenues	$ 452,797	$ 447,265
Operating income from continuing operations	7,748	19,118
Interest income	644	547
Interest expense	(15,092)	(16,256)
Unused debt commitment fees, amendment fees and loss on extinguishment of debt	(532)	(5,258)
Defined benefit pension income (expense)	(2,410)	(3,934)
Income (loss) from continuing operations before income taxes and equity income	(4,822)	2,085
Capital Expenditures	32,452	27,017
Depreciation	33,604	32,748
Depreciation Excluding Industrial Segment		31,537
Amortization	8,586	8,967
Total Amortization		8,882
Operating Segments
Operations by segment
Operating income from continuing operations	16,970	29,113
Corporate
Operations by segment
Operating income from continuing operations	(9,222)	(9,995)
Capital Expenditures	966	68
Depreciation	431	483
Amortization	683	751
Harsco Environmental Segment | Operating Segments
Operations by segment
Revenues	262,051	257,986
Operating income from continuing operations	18,267	25,935
Capital Expenditures	24,790	24,419
Depreciation	28,072	25,717
Amortization	1,828	2,048
Harsco Clean Earth Segment | Operating Segments
Operations by segment
Revenues	190,746	189,279
Operating income from continuing operations	(1,297)	3,178
Capital Expenditures	6,696	2,530
Depreciation	5,101	5,337
Amortization	$ 6,075	$ 6,083

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Revenue Recognition - Revenues by Primary Geographical Markets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Total revenues	$ 452,797	$ 447,265
Waste Processing and Reuse Solutions
Disaggregation of Revenue [Line Items]
Total revenues	190,746	189,279
Environmental services related to resource recovery for metals manufacturing and related logistical services
Disaggregation of Revenue [Line Items]
Total revenues	227,689	225,060
Applied Products
Disaggregation of Revenue [Line Items]
Total revenues	31,965	29,785
Aluminum Dross and Scrap Processing Systems
Disaggregation of Revenue [Line Items]
Total revenues	2,397	3,141
North America
Disaggregation of Revenue [Line Items]
Total revenues	261,825	256,460
Western Europe
Disaggregation of Revenue [Line Items]
Total revenues	102,079	112,171
Latin America
Disaggregation of Revenue [Line Items]
Total revenues	35,805	30,653
Asia-Pacific
Disaggregation of Revenue [Line Items]
Total revenues	28,068	23,370
Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenues	19,886	20,121
Eastern Europe
Disaggregation of Revenue [Line Items]
Total revenues	5,134	4,490
Operating Segments | Harsco Environmental Segment
Disaggregation of Revenue [Line Items]
Total revenues	262,051	257,986
Operating Segments | Harsco Environmental Segment | Waste Processing and Reuse Solutions
Disaggregation of Revenue [Line Items]
Total revenues	0	0
Operating Segments | Harsco Environmental Segment | Environmental services related to resource recovery for metals manufacturing and related logistical services
Disaggregation of Revenue [Line Items]
Total revenues	227,689	225,060
Operating Segments | Harsco Environmental Segment | Applied Products
Disaggregation of Revenue [Line Items]
Total revenues	31,965	29,785
Operating Segments | Harsco Environmental Segment | Aluminum Dross and Scrap Processing Systems
Disaggregation of Revenue [Line Items]
Total revenues	2,397	3,141
Operating Segments | Harsco Environmental Segment | North America
Disaggregation of Revenue [Line Items]
Total revenues	71,079	67,181
Operating Segments | Harsco Environmental Segment | Western Europe
Disaggregation of Revenue [Line Items]
Total revenues	102,079	112,171
Operating Segments | Harsco Environmental Segment | Latin America
Disaggregation of Revenue [Line Items]
Total revenues	35,805	30,653
Operating Segments | Harsco Environmental Segment | Asia-Pacific
Disaggregation of Revenue [Line Items]
Total revenues	28,068	23,370
Operating Segments | Harsco Environmental Segment | Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenues	19,886	20,121
Operating Segments | Harsco Environmental Segment | Eastern Europe
Disaggregation of Revenue [Line Items]
Total revenues	5,134	4,490
Operating Segments | Harsco Clean Earth Segment
Disaggregation of Revenue [Line Items]
Total revenues	190,746	189,279
Operating Segments | Harsco Clean Earth Segment | Waste Processing and Reuse Solutions
Disaggregation of Revenue [Line Items]
Total revenues	190,746	189,279
Operating Segments | Harsco Clean Earth Segment | Environmental services related to resource recovery for metals manufacturing and related logistical services
Disaggregation of Revenue [Line Items]
Total revenues	0	0
Operating Segments | Harsco Clean Earth Segment | Applied Products
Disaggregation of Revenue [Line Items]
Total revenues	0	0
Operating Segments | Harsco Clean Earth Segment | Aluminum Dross and Scrap Processing Systems
Disaggregation of Revenue [Line Items]
Total revenues	0	0
Operating Segments | Harsco Clean Earth Segment | North America
Disaggregation of Revenue [Line Items]
Total revenues	190,746	189,279
Operating Segments | Harsco Clean Earth Segment | Western Europe
Disaggregation of Revenue [Line Items]
Total revenues	0	0
Operating Segments | Harsco Clean Earth Segment | Latin America
Disaggregation of Revenue [Line Items]
Total revenues	0	0
Operating Segments | Harsco Clean Earth Segment | Asia-Pacific
Disaggregation of Revenue [Line Items]
Total revenues	0	0
Operating Segments | Harsco Clean Earth Segment | Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenues	0	0
Operating Segments | Harsco Clean Earth Segment | Eastern Europe
Disaggregation of Revenue [Line Items]
Total revenues	$ 0	$ 0

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Revenue Recognition - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Total contract assets	$ 3,700		$ 3,100
Total advances on contracts	4,000		$ 4,100
Revenue recognized	3,000	$ 2,000
Contract with Customer, Liability, Revenue Recognized	3,000	2,000
Revenues	$ 452,797	$ 447,265

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Revenue Recognition - Remaining Performance Obligation (Details) - Harsco Environmental Segment $ in Millions	Mar. 31, 2022 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 78.7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 20.6
Period of expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 19.5
Period of expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 18.7
Period of expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 13.1
Period of expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Period of expected timing of satisfaction

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Other (Income) Expenses, Net (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Other Income and Expenses [Abstract]
Employee termination benefit costs	$ (308)	$ 510
Net gains	(1,812)	(1,693)
Other costs to exit activities	581	238
Impaired asset write-downs	59	22
Other	301	(68)
Other (income) expenses, net	$ (1,179)	$ (991)

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Components of Accumulated Other Comprehensive Loss - Accumulated Other Comprehensive Income Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Components of Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	$ 805,770	$ 713,399
Other comprehensive income (loss) before reclassifications	7,136	(5,057)
Amounts reclassified from accumulated other comprehensive loss	4,872	6,286
Total other comprehensive income (loss)	12,008	1,229
OCI attributable to noncontrolling interests	482	1,066
Other comprehensive income (loss) attributable to Harsco Corporation	12,490	2,295
Ending balance	781,095	716,583
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Components of Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(134,889)	(125,392)
Other comprehensive income (loss) before reclassifications	(2,847)	(3,296)
Amounts reclassified from accumulated other comprehensive loss		0
Total other comprehensive income (loss)	(2,847)	(3,296)
OCI attributable to noncontrolling interests	482	1,066
Other comprehensive income (loss) attributable to Harsco Corporation	(2,365)	(2,230)
Ending balance	(137,254)	(127,622)
Effective Portion of Deriviatives Designated as Hedging Instruments
Components of Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(3,024)	(5,840)
Other comprehensive income (loss) before reclassifications	802	119
Amounts reclassified from accumulated other comprehensive loss	338	570
Total other comprehensive income (loss)	1,140	689
OCI attributable to noncontrolling interests		0
Other comprehensive income (loss) attributable to Harsco Corporation	1,140	689
Ending balance	(1,884)	(5,151)
Cumulative Unrecognized Actuarial Losses on Pension Obligations
Components of Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(422,248)	(514,500)
Other comprehensive income (loss) before reclassifications	9,184	(1,897)
Amounts reclassified from accumulated other comprehensive loss	4,534	5,716
Total other comprehensive income (loss)	13,718	3,819
OCI attributable to noncontrolling interests		0
Other comprehensive income (loss) attributable to Harsco Corporation	13,718	3,819
Ending balance	(408,530)	(510,681)
Unrealized Loss on Marketable Securities
Components of Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	22	(9)
Other comprehensive income (loss) before reclassifications	(3)	17
Amounts reclassified from accumulated other comprehensive loss		0
Total other comprehensive income (loss)	(3)	17
OCI attributable to noncontrolling interests		0
Other comprehensive income (loss) attributable to Harsco Corporation	(3)	17
Ending balance	19	8
Accumulated Other Comprehensive Loss
Components of Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(560,139)	(645,741)
Total other comprehensive income (loss)	12,490	2,295
Ending balance	$ (547,649)	$ (643,446)

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Components of Accumulated Other Comprehensive Loss - Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Discontinued Operations	$ 452,797	$ 447,265
Interest expense	15,092	16,256
Income from continuing operations before income taxes	(4,822)	2,085
Income tax expense (benefit)	1,221	2,101
Net income (loss)	(38,680)	1,565
Amount Reclassified from Accumulated Other Comprehensive Loss | Cumulative Unrecognized Actuarial Losses on Pension Obligations
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Income from continuing operations before income taxes	4,847	6,075
Income tax expense (benefit)	(313)	(359)
Net income (loss)	4,534	5,716
Amount Reclassified from Accumulated Other Comprehensive Loss | Effective Portion of Deriviatives Designated as Hedging Instruments
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Income from continuing operations before income taxes	462	815
Income tax expense (benefit)	(124)	(245)
Net income (loss)	338	570
Amount Reclassified from Accumulated Other Comprehensive Loss | Effective Portion of Deriviatives Designated as Hedging Instruments | Foreign currency exchange forward contracts
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Discontinued Operations	(588)	(50)
Amount Reclassified from Accumulated Other Comprehensive Loss | Effective Portion of Deriviatives Designated as Hedging Instruments | Interest rate swaps
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	1,050	865
Amount Reclassified from Accumulated Other Comprehensive Loss | Actuarial losses
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Defined benefit pension income	4,727	5,948
Amount Reclassified from Accumulated Other Comprehensive Loss | Prior service costs
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Defined benefit pension income	$ 120	$ 127

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Label	Element	Value
Stock Issued During Period, Value, Other	us-gaap_StockIssuedDuringPeriodValueOther	$ (70,000)