10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

 _______________________________________________________________________________________________________________________________________________________________________________________________________

FORM 10-Q

(Mark One)
☑	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the quarterly period ended	March 31, 2023

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 1-9172

		NACCO INDUSTRIES, INC.
		(Exact name of registrant as specified in its charter)
Delaware				34-1505819
(State or other jurisdiction of incorporation or organization)				(I.R.S. Employer Identification No.)
5875 Landerbrook Drive
Suite 220
Cleveland,	Ohio			44124-4069
(Address of principal executive offices)				(Zip code)
		(440)	229-5151
		(Registrant's telephone number, including area code)
		N/A
		(Former name, former address and former fiscal year, if changed since last report)

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

Title of each class	Trading Symbol	Name of each exchange on which registered
Class A Common Stock, $1 par value per share	NC	New York Stock Exchange

Class B Common Stock is not publicly listed for trade on any exchange or market system; however, Class B Common Stock is convertible into Class A Common Stock on a share-for-share basis.

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 þ No o

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 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 such files).

Yes þ No o

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 ☐ 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. o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes ☐ No þ

Number of shares of Class A Common Stock outstanding at April 28, 2023: 5,944,585

Number of shares of Class B Common Stock outstanding at April 28, 2023: 1,565,929

NACCO INDUSTRIES, INC.

TABLE OF CONTENTS

			Page Number
Part I.	FINANCIAL INFORMATION
	Item 1	Financial Statements
		Unaudited Condensed Consolidated Balance Sheets	2
		Unaudited Condensed Consolidated Statements of Operations	3
		Unaudited Condensed Consolidated Statements of Comprehensive Income	4
		Unaudited Condensed Consolidated Statements of Cash Flows	5
		Unaudited Condensed Consolidated Statements of Changes in Equity	6
		Notes to Unaudited Condensed Consolidated Financial Statements	7
	Item 2	Management's Discussion and Analysis of Financial Condition and Results of Operations	16
	Item 3	Quantitative and Qualitative Disclosures About Market Risk	29
	Item 4	Controls and Procedures	29
Part II.	OTHER INFORMATION
	Item 1	Legal Proceedings	30
	Item 1A	Risk Factors	30
	Item 2	Unregistered Sales of Equity Securities and Use of Proceeds	30
	Item 3	Defaults Upon Senior Securities	30
	Item 4	Mine Safety Disclosures	30
	Item 5	Other Information	31
	Item 6	Exhibits	31
	Exhibit Index		31
	Signatures		32

1

Part I

FINANCIAL INFORMATION

Item 1. Financial Statements

NACCO INDUSTRIES, INC. AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS

	MARCH 31 2023		DECEMBER 31 2022
	(In thousands, except share data)
ASSETS
Cash and cash equivalents	$	109,637	$	110,748
Trade accounts receivable	31,039		37,940
Accounts receivable from affiliates	4,476		6,638
Inventories	71,246		71,488
Federal income tax receivable	15,098		15,687
Prepaid insurance	11,840		1,999
Other current assets	12,918		15,907
Total current assets	256,254		260,407
Property, plant and equipment, net	219,772		217,952
Intangibles, net	27,328		28,055
Investments in unconsolidated subsidiaries	13,945		14,927
Operating lease right-of-use assets	6,221		6,419
Other non-current assets	38,604		40,312
Total assets	$	562,124	$	568,072
LIABILITIES AND EQUITY
Accounts payable	$	10,610	$	11,952
Accounts payable to affiliates	868		1,362
Current maturities of long-term debt	2,943		3,649
Asset retirement obligations	2,497		1,746
Accrued payroll	7,922		18,105
Deferred revenue	2,044		833
Other current liabilities	7,128		6,623
Total current liabilities	34,012		44,270
Long-term debt	17,434		16,019
Operating lease liabilities	7,278		7,528
Asset retirement obligations	46,418		44,256
Pension and other postretirement obligations	4,778		5,082
Deferred income taxes	3,701		6,122
Liability for uncertain tax positions	9,004		9,329
Other long-term liabilities	7,813		8,500
Total liabilities	130,438		141,106
Stockholders' equity
Common stock:
Class A, par value $1 per share, 5,944,585 shares outstanding (December 31, 2022 - 5,782,944 shares outstanding)	5,944		5,783
Class B, par value $1 per share, convertible into Class A on a one-for-one basis, 1,565,929 shares outstanding (December 31, 2022 - 1,566,129 shares outstanding)	1,566		1,566
Capital in excess of par value	24,109		23,706
Retained earnings	409,059		404,924
Accumulated other comprehensive loss	(8,992)		(9,013)
Total stockholders' equity	431,686		426,966
Total liabilities and equity	$	562,124	$	568,072

See notes to Unaudited Condensed Consolidated Financial Statements.

2

NACCO INDUSTRIES, INC. AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

	THREE MONTHS ENDED
	MARCH 31
	2023		2022
	(In thousands, except per share data)
Revenues	$	50,141	$	55,023
Cost of sales	46,784		39,176
Gross profit	3,357		15,847
Earnings of unconsolidated operations	13,824		14,592
Operating expenses
Selling, general and administrative expenses	14,876		14,784
Amortization of intangible assets	727		847
Gain on sale of assets	(236)		(136)
	15,367		15,495
Operating profit	1,814		14,944
Other (income) expense
Interest expense	545		513
Interest income	(1,155)		(145)
Closed mine obligations	409		380
Gain on equity securities	(628)		(518)
Other, net	(1,725)		(230)
	(2,554)		—
Income before income tax (benefit) provision	4,368		14,944
Income tax (benefit) provision	(1,324)		2,362
Net income	$	5,692	$	12,582
Earnings per share:
Basic earnings per share	$	0.77	$	1.73
Diluted earnings per share	$	0.76	$	1.72
Basic weighted average shares outstanding	7,428		7,253
Diluted weighted average shares outstanding	7,515		7,321

See notes to Unaudited Condensed Consolidated Financial Statements.

3

NACCO INDUSTRIES, INC. AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

	THREE MONTHS ENDED
	MARCH 31
	2023		2022
	(In thousands)
Net income	$	5,692	$	12,582
Reclassification of pension and postretirement adjustments into earnings, net of $6 and $35 tax benefit in the three months ended March 31, 2023 and March 31, 2022, respectively.	21		118
Total other comprehensive income	21		118
Comprehensive income	$	5,713	$	12,700

See notes to Unaudited Condensed Consolidated Financial Statements.

4

NACCO INDUSTRIES, INC. AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

	THREE MONTHS ENDED
	MARCH 31
	2023		2022
	(In thousands)
Operating activities
Net cash provided by (used for) operating activities	$	6,254	$	(1,070)
Investing activities
Expenditures for property, plant and equipment and acquisition of mineral interests	(7,879)		(4,649)
Proceeds from the sale of property, plant and equipment	272		135
Proceeds from the sale of private company equity units	1,153		—
Other	(10)		(15)
Net cash used for investing activities	(6,464)		(4,529)
Financing activities
Additions to long-term debt	2,112		3,348
Reductions of long-term debt	(1,456)		(2,689)
Net additions to revolving credit agreements	—		2,000
Cash dividends paid	(1,557)		(1,445)
Net cash (used for) provided by financing activities	(901)		1,214
Cash and cash equivalents
Total decrease for the period	(1,111)		(4,385)
Balance at the beginning of the period	110,748		86,005
Balance at the end of the period	$	109,637	$	81,620

See notes to Unaudited Condensed Consolidated Financial Statements.

5

NACCO INDUSTRIES, INC. AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

	Class A Common Stock		Class B Common Stock		Capital in Excess of Par Value		Retained Earnings		Accumulated Other Comprehensive Income (Loss)		Total Stockholders' Equity
	(In thousands, except per share data)
Balance, January 1, 2022	$	5,616	$	1,567	$	16,331	$	336,778	$	(8,176)	$	352,116
Stock-based compensation	145		—		978		—		—		1,123
Conversion of Class B to Class A shares	1		(1)		—		—		—		—
Net income	—		—		—		12,582		—		12,582
Cash dividends on Class A and Class B common stock: $0.1975 per share	—		—		—		(1,445)		—		(1,445)
Reclassification adjustment to net income, net of tax	—		—		—		—		118		118
Balance, March 31, 2022	$	5,762	$	1,566	$	17,309	$	347,915	$	(8,058)	$	364,494
Balance, January 1, 2023	$	5,783	$	1,566	$	23,706	$	404,924	$	(9,013)	$	426,966
Stock-based compensation	161		—		403		—		—		564
Net income	—		—		—		5,692		—		5,692
Cash dividends on Class A and Class B common stock: $0.2075 per share	—		—		—		(1,557)		—		(1,557)
Reclassification adjustment to net income, net of tax	—		—		—		—		21		21
Balance, March 31, 2023	$	5,944	$	1,566	$	24,109	$	409,059	$	(8,992)	$	431,686

See notes to Unaudited Condensed Consolidated Financial Statements.

6

NACCO INDUSTRIES, INC. AND SUBSIDIARIES

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

MARCH 31, 2023

(In thousands, except as noted and per share amounts)

NOTE 1—Nature of Operations and Basis of Presentation

The accompanying Unaudited Condensed Consolidated Financial Statements include the accounts of NACCO Industries, Inc.® (“NACCO”) and its wholly owned subsidiaries (collectively, the “Company”). NACCO brings natural resources to life by delivering aggregates, minerals, reliable fuels and environmental solutions through its robust portfolio of NACCO Natural Resources businesses. The Company operates under three business segments: Coal Mining, North American Mining ("NAMining") and Minerals Management. The Coal Mining segment operates surface coal mines for power generation companies. The NAMining segment is a trusted mining partner for producers of aggregates, activated carbon, lithium and other industrial minerals. The Minerals Management segment, which includes the Catapult Mineral Partners ("Catapult") business, acquires and promotes the development of mineral interests. Mitigation Resources of North America® ("Mitigation Resources") provides stream and wetland mitigation solutions.

The Company also has items not directly attributable to a reportable segment. Intercompany accounts and transactions are eliminated in consolidation.

The Company’s operating segments are further described below:

Coal Mining Segment

The Coal Mining segment, operating as The North American Coal Corporation® ("NACoal"), operates surface coal mines under long-term contracts with power generation companies pursuant to a service-based business model. Coal is surface mined in North Dakota, Texas and Mississippi. Each mine is fully integrated with its customer's operations.

During the three months ended March 31, 2023, the Coal Mining segment's operating coal mines were: The Coteau Properties Company (“Coteau”), Coyote Creek Mining Company, LLC (“Coyote Creek”), The Falkirk Mining Company (“Falkirk”), Mississippi Lignite Mining Company (“MLMC”) and The Sabine Mining Company (“Sabine”).

Sabine operates the Sabine Mine in Texas. All production from Sabine is delivered to Southwestern Electric Power Company's (“SWEPCO”) Henry W. Pirkey Plant (the “Pirkey Plant”). SWEPCO is an American Electric Power (“AEP”) company. As a result of the early retirement of the Pirkey Plant, Sabine ceased deliveries in March 2023 and final reclamation began on April 1, 2023. Funding for mine reclamation is the responsibility of SWEPCO, and Sabine will receive compensation for providing mine reclamation services.

The United States Environmental Protection Agency (the “EPA”) has a comprehensive regulatory program to manage the disposal of coal combustion residuals (“CCR”) from coal-fired power plants as non-hazardous material under the Resource Conservation and Recovery Act (“RCRA”). Individual states administer some or all of the provisions of RCRA. The North Dakota Department of Environmental Quality approved Falkirk’s customer's plan for an alternate disposal liner to store coal ash at the Coal Creek Station power plant. In the first quarter of 2023, the EPA proposed to deny the application. If denied, a new liner or new waste management unit(s) may need to be installed which could result in the temporary suspension of operations at Coal Creek Station. Falkirk is the sole supplier of lignite to Coal Creek Station. Any suspension of operations at Coal Creek Station would eliminate the need for lignite coal during the suspension period. Any such suspension of operations at Coal Creek Station or any of the power plants supplied by the Company's mines could have a material adverse effect on the Company’s business, financial condition and results of operations. See page 18 for further information on the Resource Conservation and Recovery Act.

MLMC is the exclusive supplier of lignite to the Red Hills Power Plant in Ackerman, Mississippi. Choctaw Generation Limited Partnership ("CGLP") leases the Red Hills Power Plant from a Southern Company subsidiary pursuant to a leveraged lease arrangement. CGLP's ability to make required payments to the Southern Company subsidiary is dependent on the operational performance of the Red Hills Power Plant. During 2022, Southern Company disclosed that it provided notice to the lessee, CGLP, to terminate the related operating and maintenance agreement effective June 30, 2023. Subsequently, CGLP failed to make the semi-annual lease payment due in December 2022 and as a result, the Southern Company subsidiary was unable to make its corresponding payment to the debtholders. The parties to the lease have entered into a forbearance agreement which suspends the related contractual rights of the parties while they continue restructuring negotiations, which could result in rescission of the termination notice. The ultimate outcome of this matter cannot be determined at this time but could have a material impact on the Company's financial statements if the operating and maintenance agreement is terminated.

7

At all operating coal mines other than MLMC, the Company is paid a management fee per ton of coal or heating unit (MMBtu) delivered. Each contract specifies the indices and mechanics by which fees change over time, generally in line with broad measures of U.S. inflation. The customers are responsible for funding all mine operating costs, including final mine reclamation, and directly or indirectly provide all of the capital required to build and operate the mine. This contract structure eliminates exposure to spot coal market price fluctuations while providing income and cash flow with minimal capital investment. Other than at Coyote Creek, debt financing provided by or supported by the customers is without recourse to NACCO and NACoal. See Note 6 for further discussion of Coyote Creek's guarantees.

All operating coal mines other than MLMC meet the definition of a variable interest entity ("VIE"). In each case, NACCO is not the primary beneficiary of the VIE as it does not exercise financial control; therefore, NACCO does not consolidate the results of these operations within its financial statements. Instead, these contracts are accounted for as equity method investments. The income before income taxes associated with these VIEs is reported as Earnings of unconsolidated operations on the Unaudited Condensed Consolidated Statements of Operations and the Company’s investment is reported on the line Investments in unconsolidated subsidiaries in the Unaudited Condensed Consolidated Balance Sheets. The mines that meet the definition of a VIE are referred to collectively as the “Unconsolidated Subsidiaries.” For tax purposes, the Unconsolidated Subsidiaries are included within the NACCO consolidated U.S. tax return; therefore, the Income tax (benefit) provision line on the Unaudited Condensed Consolidated Statements of Operations includes income taxes related to these entities. See Note 6 for further information on the Unconsolidated Subsidiaries.

The Company performs contemporaneous reclamation activities at each mine in the normal course of operations. Under all of the Unconsolidated Subsidiaries’ contracts, the customer has the obligation to fund final mine reclamation activities. Under certain contracts, the Unconsolidated Subsidiary holds the mine permit and is therefore responsible for final mine reclamation activities. To the extent the Unconsolidated Subsidiary performs such final reclamation, it is compensated for providing those services in addition to receiving reimbursement from customers for costs incurred.

The MLMC contract is the only operating coal contract in which the Company is responsible for all operating costs, capital requirements and final mine reclamation; therefore, MLMC is consolidated within NACCO’s financial statements. MLMC sells coal to its customer at a contractually agreed-upon price which adjusts monthly, primarily based on changes in the level of established indices which reflect general U.S. inflation rates. Profitability at MLMC is affected by customer demand for coal and changes in the indices that determine sales price and actual costs incurred. As diesel fuel is heavily weighted among the indices used to determine the coal sales price, fluctuations in diesel fuel prices can result in significant fluctuations in earnings at MLMC.

NAMining Segment

The NAMining segment provides value-added contract mining and other services for producers of industrial minerals. The segment is a platform for the Company’s growth and diversification of mining activities outside of the thermal coal industry. NAMining provides contract mining services for independently owned mines and quarries, creating value for its customers by performing the mining aspects of its customers’ operations. This allows customers to focus on their areas of expertise: materials handling and processing, product sales and distribution. As of March 31, 2023, NAMining operates mines in Florida, Texas, Arkansas, Indiana, Virginia and Nebraska and will serve as exclusive contract miner for the Thacker Pass lithium project in northern Nevada.

Certain of the entities within the NAMining segment are VIEs and are accounted for under the equity method as Unconsolidated Subsidiaries. See Note 6 for further discussion.

Minerals Management Segment

The Minerals Management segment derives income primarily by leasing its royalty and mineral interests to third-party exploration and production companies, and, to a lesser extent, other mining companies, granting them the rights to explore, develop, mine, produce, market and sell gas, oil, and coal in exchange for royalty payments based on the lessees' sales of those minerals.

The Minerals Management segment owns royalty interests, mineral interests, non-participating royalty interests and overriding royalty interests.

•Royalty Interest. Royalty interests generally result when the owner of a mineral interest leases the underlying minerals to an exploration and production company pursuant to an oil and gas lease. Typically, the resulting royalty interest is a cost-free percentage of production revenues for minerals extracted from the acreage. A holder of royalty interests is generally not responsible for capital expenditures or lease operating expenses, but royalty interests may be calculated

8

net of post-production expenses, and typically has no environmental liability. Royalty interests leased to producers expire upon the expiration of the oil and gas lease and revert to the mineral owner.

•Mineral Interest. Mineral interests are perpetual rights of the owner to explore, develop, exploit, mine and/or produce any or all of the minerals lying below the surface of the property. The holder of a mineral interest has the right to lease the minerals to an exploration and production company. Upon the execution of an oil and gas lease, the lessee (the exploration and production company) becomes the working interest owner and the lessor (the mineral interest owner) has a royalty interest.

•Non-Participating Royalty Interest (“NPRIs”). NPRI is an interest in oil and gas production which is created from the mineral estate. The NPRI is expense-free, bearing no operational costs of production. The term “non-participating” indicates that the interest owner does not share in the bonus, rentals from a lease, nor the right to participate in the execution of oil and gas leases. The NPRI owner does, however, typically receive royalty payments.

•Overriding Royalty Interest (“ORRIs”). ORRIs are created by carving out the right to receive royalties from a working interest. Like royalty interests, ORRIs do not confer an obligation to make capital expenditures or pay for lease operating expenses and have limited environmental liability; however, ORRIs may be calculated net of post-production expenses, depending on how the ORRI is structured. ORRIs that are carved out of working interests are linked to the same underlying oil and gas lease that created the working interest, and therefore, such ORRIs are typically subject to expiration upon the expiration or termination of the oil and gas lease.

The Company may own more than one type of mineral and royalty interest in the same tract of land. For example, where the Company owns an ORRI in a lease on the same tract of land in which it owns a mineral interest, the ORRI in that tract will relate to the same gross acres as the mineral interest in that tract.

The Minerals Management segment will benefit from the continued development of its mineral properties without the need for investment of additional capital once mineral and royalty interests have been acquired. The Minerals Management segment does not currently have any material investments under which it would be required to bear the cost of exploration, production or development.

The Company also manages legacy royalty and mineral interests located in Ohio (Utica and Marcellus shale natural gas), Louisiana (Haynesville shale and Cotton Valley formation natural gas), Texas (Cotton Valley and Austin Chalk formation natural gas), Mississippi (coal), Pennsylvania (coal, coalbed methane and Marcellus shale natural gas), Alabama (coal, coalbed methane and natural gas) and North Dakota (coal, oil and natural gas). The majority of the Company’s legacy reserves were acquired as part of its historical coal mining operations.

Other Items: On December 1, 2022, the Company transferred its ownership interest in Midwest AgEnergy, LLC to HLCP Ethanol Holdco, LLC (“HLCP”). The Company received a payment of $1.2 million in the first quarter of 2023 in connection with a post-closing purchase price adjustment, which is included on the line "Other, net" within the accompanying Unaudited Consolidated Statements of Operations.

The HLCP acquisition agreement includes two contingent earn-out arrangements under which additional payments are possible. The first earn-out is based on the achievement of EBITDA targets through December 31, 2024. The second earn-out is based on the development of a carbon dioxide pipeline that will support a carbon dioxide sequestration project over a four-year period commencing on the transaction closing date. Additional payments to NACCO could range from $0 to approximately $12.9 million based on achievement of the two earn-outs as well as payment of amounts held in escrow to address potential indemnity claims during the 12-month period following the transaction date. Any future payments associated with the earn-outs or amounts held in escrow will be recognized when realized, consistent with the accounting for gain contingencies.

During the first quarter of 2023, the Company’s wholly-owned subsidiary, Caddo Creek Resources Company (“Caddo Creek”), acquired 100% of the membership interests in the Marshall Mine located outside of Marshall, Texas from Advanced Emissions Solutions (“ADES”). Prior to the acquisition, Caddo Creek was performing mine reclamation under a fixed price contract with ADES. The Company received $2.2 million of cash, assumed the asset retirement obligation estimated to be approximately $1.9 million and recognized a gain of approximately $0.3 million.

Basis of Presentation: These financial statements have been prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair

9

presentation of the financial position of the Company at March 31, 2023, the results of its operations, comprehensive income, cash flows and changes in equity for the three months ended March 31, 2023 and 2022 have been included. These Unaudited Condensed Consolidated Financial Statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2022.

The balance sheet at December 31, 2022 has been derived from the audited financial statements at that date but does not include all of the information or notes required by U.S. GAAP for complete financial statements.

NOTE 2—Revenue Recognition

Nature of Performance Obligations

At contract inception, the Company assesses the goods and services promised in its contracts with customers and identifies a performance obligation for each promised good or service that is distinct. To identify the performance obligations, the Company considers all of the goods or services promised in the contract regardless of whether they are explicitly stated or are implied by customary business practices.

Each mine has a contract with its respective customer that represents a contract under ASC 606. For its consolidated entities, the Company’s performance obligations vary by contract and consist of the following:

At MLMC, each MMBtu delivered during the production period is considered a separate performance obligation. Revenue is recognized at the point in time that control of each MMBtu of lignite transfers to the customer. Fluctuations in revenue from period to period generally result from changes in customer demand.

At NAMining, the management service is primarily to oversee the operation of the equipment, and delivery of aggregates or other minerals is the performance obligation accounted for as a series. Performance momentarily creates an asset that the customer simultaneously receives and consumes; therefore, control is transferred to the customer over time. Consistent with the conclusion that the customer simultaneously receives and consumes the benefits provided, an input-based measure of progress is appropriate. As each month of service is completed, revenue is recognized for the amount of actual costs incurred, plus the management fee or fixed fee and the general and administrative fee (as applicable). Fluctuations in revenue from period to period result from changes in customer demand primarily due to increases and decreases in activity levels on individual contracts and variances in reimbursable costs.

The Minerals Management segment enters into contracts which grant third-party lessees the right to explore, develop, produce and sell minerals controlled by the Company. These arrangements result in the transfer of mineral rights for a period of time; however, no rights to the actual land are granted other than access for purposes of exploration, development, production and sales. The mineral rights revert back to the Company at the expiration of the contract.

Under these contracts, granting exclusive right, title, and interest in and to minerals is the performance obligation. The performance obligation under these contracts represents a series of distinct goods or services whereby each day of access that is provided is distinct. The transaction price consists of a variable sales-based royalty and, in certain arrangements, a fixed component in the form of an up-front lease bonus payment. As the amount of consideration the Company will ultimately be entitled to is entirely susceptible to factors outside its control, the entire amount of variable consideration is constrained at contract inception. The Company believes that the provisions of royalty contracts are customary in the industry. Up-front lease bonus payments represent the fixed portion of the transaction price and are recognized over the primary term of the contract, which is generally three to five years.

Mitigation Resources generates and sells stream and wetland mitigation credits (known as mitigation banking) and provides services to those engaged in permittee-responsible stream and wetland mitigation. Each mitigation credit sale is considered a separate performance obligation. Revenue is recognized at the point in time that control of each mitigation credit transfers to the customer. Fluctuations in revenue from period to period generally result from changes in customer demand. Under the permittee-responsible stream and wetland mitigation model, the contracts are generally structured as a management fee agreement under which Mitigation Resources is reimbursed for all costs incurred in performing the required mitigation plus an agreed profit percentage or a fixed fee. The mitigation services provided is the performance obligation and is accounted for as a series. Performance momentarily creates an asset that the customer simultaneously receives and consumes; therefore, control is transferred to the customer as work is completed. Consistent with the conclusion that the customer simultaneously receives and consumes the benefits provided, an input-based measure of progress is appropriate. As each month of service is completed, revenue is recognized for the amount of actual costs incurred, plus the management fee or fixed fee. Fluctuations in revenue

10

from period to period result from changes in customer demand primarily due to increases and decreases in activity levels of individual contracts and variances in reimbursable costs.

Significant Judgments

The Company’s contracts with its customers contain different types of variable consideration including, but not limited to, management fees that adjust based on volumes or MMBtu delivered, however, the terms of these variable payments relate specifically to the Company's efforts to satisfy one or more, but not all of, the performance obligations (or to a specific outcome from satisfying the performance obligations) in the contract. Therefore, the Company allocates each variable payment (and subsequent changes to that payment) entirely to the specific performance obligation to which it relates. Management fees, as well as general and administrative fees, are also adjusted based on changes in specified indices (e.g., CPI) to compensate for general inflation changes. Index adjustments, if applicable, are effective prospectively.

Cost Reimbursement

Certain contracts include reimbursement from customers of actual costs incurred for the purchase of supplies, equipment and services in accordance with contractual terms. Such reimbursable revenue is variable and subject to uncertainty, as the amounts received and timing thereof is highly dependent on factors outside of the Company’s control. Accordingly, reimbursable revenue is fully constrained and not recognized until the uncertainty is resolved, which typically occurs when the related costs are incurred on behalf of a customer. The Company is considered a principal in such transactions and records the associated revenue at the gross amount billed to the customer with the related costs recorded as an expense within cost of sales.

Prior Period Performance Obligations

The Company records royalty income in the month production is delivered to the purchaser. As a non-operator, the Company has limited visibility into when new wells start producing and production statements may not be received for 30 to 90 days or more after the date production is delivered. As a result, the Company is required to estimate the amount of production delivered to the purchaser of the product and the price that will be received for the sale of the product. The expected sales volumes and prices for these properties are estimated and recorded in "Trade accounts receivable" in the accompanying Unaudited Condensed Consolidated Balance Sheets. The difference between the Company’s estimates and the actual amounts received is recorded in the month that payment is received from the third-party lessee. For the three months ended March 31, 2023, royalty income recognized in the reporting period related to performance obligations satisfied in prior reporting periods was immaterial. For the three months ended March 31, 2022, royalty income of $2.1 million was recognized for a settlement related to the Company’s ownership interest in certain mineral rights.

Disaggregation of Revenue

In accordance with ASC 606-10-50, the Company disaggregates revenue from contracts with customers into major goods and service lines and timing of transfer of goods and services. The Company determined that disaggregating revenue into these categories achieves the disclosure objective of depicting how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. The Company’s business consists of the Coal Mining, NAMining and Minerals Management segments as well as Unallocated Items. See Note 8 to the Unaudited Condensed Consolidated Financial Statements for further discussion of segment reporting.

	THREE MONTHS ENDED
	MARCH 31
	2023		2022
Timing of Revenue Recognition
Goods transferred at a point in time	$	20,146	$	20,373
Services transferred over time	29,995		34,650
Total revenues	$	50,141	$	55,023

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Contract Balances

The opening and closing balances of the Company’s current and long-term accounts receivable, contract assets and contract liabilities are as follows:

	Contract balances
	Trade accounts receivable		Contract asset (current)		Contract asset (long-term)		Contract liability (current)		Contract liability (long-term)
Balance, January 1, 2023	$	37,940	$	409	$	5,985	$	833	$	1,709
Balance, March 31, 2023	31,039		—		3,555		2,044		827
Increase (decrease)	$	(6,901)	$	(409)	$	(2,430)	$	1,211	$	(882)

As described above, the Company enters into royalty contracts that grant exclusive right, title, and interest in and to minerals. The transaction price consists of a variable sales-based royalty and, in certain arrangements, a fixed component in the form of an up-front lease bonus payment. The timing of the payment of the fixed portion of the transaction price is upfront, however, the performance obligation is satisfied over the primary term of the contract, which is generally three to five years. Therefore, at the time any such up-front payment is received, a contract liability is recorded which represents deferred revenue. The amount of royalty revenue recognized in both of the three months ended March 31, 2023 and 2022 that was included in the opening contract liability was $0.2 million. This revenue consists of up-front lease bonus payments received under royalty contracts that are recognized over the primary term of the royalty contracts, which are generally three to five years.

The Company expects to recognize an additional $1.9 million in the remainder of 2023, $0.6 million in 2024, $0.3 million in 2025 and $0.1 million in 2026 and 2027 related to the contract liability remaining at March 31, 2023. The difference between the opening and closing balances of the Company’s contract balances results from the timing difference between the Company’s performance and the customer’s payment.

The Company has no contract assets recognized from the costs to obtain or fulfill a contract with a customer.

NOTE 3—Inventories

Inventories are summarized as follows:

	MARCH 31 2023		DECEMBER 31 2022
Coal	$	26,229	$	27,927
Mining supplies	45,017		43,561
Total inventories	$	71,246	$	71,488

During the first quarter of 2023, the Company recorded a $2.4 million inventory impairment charge in the line “Cost of sales” in the accompanying Unaudited Consolidated Statements of Operations as mining costs exceeded net realizable value at MLMC.

NOTE 4—Stockholders' Equity

Stock Repurchase Program: On November 10, 2021, the Company's Board of Directors approved a stock repurchase program ("2021 Stock Repurchase Program") providing for the purchase of up to $20.0 million of the Company’s outstanding Class A common stock through December 31, 2023.

The timing and amount of any repurchases under the 2021 Stock Repurchase Program are determined at the discretion of the Company's management based on a number of factors, including the availability of capital, other capital allocation alternatives, market conditions for the Company's Class A Common Stock and other legal and contractual restrictions. The 2021 Stock Repurchase Program does not require the Company to acquire any specific number of shares and may be modified, suspended, extended or terminated by the Company without prior notice and may be executed through open market purchases, privately negotiated transactions or otherwise. All or part of the repurchases under the 2021 Stock Repurchase Program may be implemented under a Rule 10b5-1 trading plan, which would allow repurchases under pre-set terms at times when the Company might otherwise be restricted from doing so under applicable securities laws. The Company has not repurchased any shares of common stock under the 2021 Stock Repurchase Program through March 31, 2023.

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NOTE 5—Fair Value Disclosure

Recurring Fair Value Measurements: The following table presents the Company's assets and liabilities accounted for at fair value on a recurring basis:

			Fair Value Measurements at Reporting Date Using
			Quoted Prices in				Significant
			Active Markets for		Significant Other		Unobservable
			Identical Assets		Observable Inputs		Inputs
Description	Date		(Level 1)		(Level 2)		(Level 3)
	March 31, 2023
Assets:
Equity securities	$	16,172	$	16,172	$	—	$	—
	$	16,172	$	16,172	$	—	$	—
	December 31, 2022
Assets:
Equity securities	$	15,534	$	15,534	$	—	$	—
	$	15,534	$	15,534	$	—	$	—

Bellaire Corporation (“Bellaire”) is a non-operating subsidiary of the Company with legacy liabilities relating to closed mining operations, primarily former Eastern U.S. underground coal mining operations. Prior to 2022, Bellaire contributed $5.0 million to establish a mine water treatment trust (the "Mine Water Treatment Trust") to assure the long-term treatment of post-mining discharge. Bellaire's Mine Water Treatment Trust invests in equity securities that are reported at fair value based upon quoted market prices in active markets for identical assets; therefore, they are classified as Level 1 within the fair value hierarchy. The Company recognized a gain of $0.6 million and a loss of $0.7 million during the three months ended March 31, 2023 and 2022, respectively, related to the Mine Water Treatment Trust.

Prior to 2022, the Company invested $2.0 million in equity securities of a public company with a diversified portfolio of royalty producing mineral interests. The investment is reported at fair value based upon quoted market prices in active markets for identical assets; therefore, it is classified as Level 1 within the fair value hierarchy. The Company recognized a gain of $0.1 million and $1.2 million during the three months ended March 31, 2023 and 2022, respectively, related to the investment in these equity securities.

The change in fair value of equity securities is reported on the line Gain on equity securities in the Other (income) expense section of the Unaudited Condensed Consolidated Statements of Operations.

There were no transfers into or out of Levels 1, 2 or 3 during the three months ended March 31, 2023 and 2022.

NOTE 6—Unconsolidated Subsidiaries

Each of the Company's wholly owned Unconsolidated Subsidiaries, within the Coal Mining and NAMining segments, meet the definition of a VIE. The Unconsolidated Subsidiaries are capitalized primarily with debt financing provided by or supported by their respective customers, and generally without recourse to NACCO and NACoal. Although the Company owns 100% of the equity and manages the daily operations of the Unconsolidated Subsidiaries, the Company has determined that the equity capital provided by the Company is not sufficient to adequately finance the ongoing activities or absorb any expected losses without additional support from the customers. The customers have a controlling financial interest and have the power to direct the activities that most significantly affect the economic performance of the entities. As a result, the Company is not the primary beneficiary and therefore does not consolidate these entities' financial positions or results of operations. See Note 1 for a discussion of these entities.

The Investment in the unconsolidated subsidiaries and related tax positions totaled $13.9 million and $14.9 million at March 31, 2023 and December 31, 2022, respectively. The Company's maximum risk of loss relating to these entities is limited to its invested capital, which was $4.5 million and $7.1 million at March 31, 2023 and December 31, 2022, respectively. Earnings of

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unconsolidated operations were $13.8 million and $14.6 million during the three months ended March 31, 2023 and 2022, respectively.

NACoal is a party to certain guarantees related to Coyote Creek. Under certain circumstances of default or termination of Coyote Creek’s Lignite Sales Agreement (“LSA”), NACoal would be obligated for payment of a "make-whole" amount to Coyote Creek’s third-party lenders. The “make-whole” amount is based on the excess, if any, of the discounted value of the remaining scheduled debt payments over the principal amount. In addition, in the event Coyote Creek’s LSA is terminated on or after January 1, 2024 by Coyote Creek’s customers, NACoal is obligated to purchase Coyote Creek’s dragline and rolling stock for the then net book value of those assets. To date, no payments have been required from NACoal since the inception of these guarantees. The Company believes that the likelihood NACoal would be required to perform under the guarantees is remote, and no amounts related to these guarantees have been recorded.

NOTE 7—Contingencies

Various legal and regulatory proceedings and claims have been or may be asserted against NACCO and certain subsidiaries relating to the conduct of their businesses. These proceedings and claims are incidental to the ordinary course of business of the Company. Management believes that it has meritorious defenses and will vigorously defend the Company in these actions. Any costs that management estimates will be paid as a result of these claims are accrued when the liability is considered probable and the amount can be reasonably estimated.  If a range of amounts can be reasonably estimated and no amount within the range is a better estimate than any other amount, then the minimum of the range is accrued. The Company does not accrue liabilities when the likelihood that the liability has been incurred is probable but the amount cannot be reasonably estimated or when the liability is believed to be only reasonably possible or remote. For contingencies where an unfavorable outcome is probable or reasonably possible and which are material, the Company discloses the nature of the contingency and, in some circumstances, an estimate of the possible loss. 

These matters are subject to inherent uncertainties, and unfavorable rulings could occur. If an unfavorable ruling were to occur, there exists the possibility of an adverse impact on the Company’s financial position, results of operations and cash flows of the period in which the ruling occurs, or in future periods.

NOTE 8—Business Segments

The Company’s operating segments are: (i) Coal Mining, (ii) NAMining and (iii) Minerals Management. The Company determines its reportable segments by first identifying its operating segments, and then by assessing whether any components of these segments constitute a business for which discrete financial information is available and where segment management regularly reviews the operating results of that component. The Company’s Chief Operating Decision Maker utilizes operating profit to evaluate segment performance and allocate resources.

The Company has items not directly attributable to a reportable segment that are not included as part of the measurement of segment operating profit, which include primarily administrative costs related to public company reporting requirements at the parent company and the financial results of Mitigation Resources and Bellaire. Mitigation Resources generates and sells stream and wetland mitigation credits (known as mitigation banking) and provides services to those engaged in permittee-responsible stream and wetland mitigation. Bellaire manages the Company’s long-term liabilities related to former Eastern U.S. underground mining activities.

All financial statement line items below operating profit (other income including interest expense and interest income, the provision for income taxes and net income) are presented and discussed within this Form 10-Q on a consolidated basis.

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The following tables present revenue, operating profit, capital expenditures and depreciation expense:

	THREE MONTHS ENDED
	MARCH 31
	2023		2022
Revenues
Coal Mining	$	20,653	$	20,962
NAMining	20,633		21,404
Minerals Management	8,285		12,754
Unallocated Items	1,191		192
Eliminations	(621)		(289)
Total	$	50,141	$	55,023
Operating profit (loss)
Coal Mining	$	313	$	7,352
NAMining	830		1,271
Minerals Management	6,044		11,628
Unallocated Items	(5,353)		(5,439)
Eliminations	(20)		132
Total	$	1,814	$	14,944

Expenditures for property, plant and equipment and acquisition of mineral interests
Coal Mining	$	2,686	$	1,720
NAMining	4,423		1,820
Minerals Management	344		833
Unallocated Items	426		276
Total	$	7,879	$	4,649
Depreciation, depletion and amortization
Coal Mining	$	4,240	$	4,038
NAMining	1,886		1,467
Minerals Management	811		578
Unallocated Items	82		44
Total	$	7,019	$	6,127

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Item 2. - Management's Discussion and Analysis of Financial Condition and Results of Operations

(Amounts in thousands, except as noted and per share data)

Management's Discussion and Analysis of Financial Condition and Results of Operations contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are based upon management's current expectations and are subject to various uncertainties and changes in circumstances. Important factors that could cause actual results to differ materially from those described in these forward-looking statements are set forth below under the heading “Forward-Looking Statements."

Management's Discussion and Analysis of Financial Condition and Results of Operations include NACCO Industries, Inc.® (“NACCO”) and its wholly owned subsidiaries (collectively, the “Company”). NACCO brings natural resources to life by delivering aggregates, minerals, reliable fuels and environmental solutions through its robust portfolio of NACCO Natural Resources businesses. The Company operates under three business segments: Coal Mining, North American Mining ("NAMining") and Minerals Management. The Coal Mining segment operates surface coal mines for power generation companies. The NAMining segment is a trusted mining partner for producers of aggregates, activated carbon, lithium and other industrial minerals. The Minerals Management segment, which includes the Catapult Mineral Partners ("Catapult") business, acquires and promotes the development of mineral interests. Mitigation Resources of North America® ("Mitigation Resources") provides stream and wetland mitigation solutions.

The Company has items not directly attributable to a reportable segment that are not included as part of the measurement of segment operating profit, which primarily includes administrative costs related to public company reporting requirements at the parent company and the financial results of Mitigation Resources and Bellaire Corporation ("Bellaire"). Bellaire manages the Company’s long-term liabilities related to former Eastern U.S. underground mining activities.

All financial statement line items below operating profit (other income, including interest expense and interest income, the provision for income taxes and net income) are presented and discussed within this Form 10-Q on a consolidated basis.

The Company’s operating segments are further described below:

Coal Mining Segment

The Coal Mining segment, operating as The North American Coal Corporation® ("NACoal"), operates surface coal mines under long-term contracts with power generation companies pursuant to a service-based business model. Coal is surface mined in North Dakota, Texas and Mississippi. Each mine is fully integrated with its customer's operations.

During the three months ended March 31, 2023, the Coal Mining segment's operating coal mines were: The Coteau Properties Company (“Coteau”), Coyote Creek Mining Company, LLC (“Coyote Creek”), The Falkirk Mining Company (“Falkirk”), Mississippi Lignite Mining Company (“MLMC”) and The Sabine Mining Company (“Sabine”).

Sabine operates the Sabine Mine in Texas. All production from Sabine is delivered to Southwestern Electric Power Company's (“SWEPCO”) Henry W. Pirkey Plant (the “Pirkey Plant”). SWEPCO is an American Electric Power (“AEP”) company. As a result of the early retirement of the Pirkey Plant, Sabine ceased deliveries in March 2023 and final reclamation began on April 1, 2023. Funding for mine reclamation is the responsibility of SWEPCO, and Sabine will receive compensation for providing mine reclamation services.

MLMC is the exclusive supplier of lignite to the Red Hills Power Plant in Ackerman, Mississippi. Choctaw Generation Limited Partnership ("CGLP") leases the Red Hills Power Plant from a Southern Company subsidiary pursuant to a leveraged lease arrangement. CGLP's ability to make required payments to the Southern Company subsidiary is dependent on the operational performance of the Red Hills Power Plant. During 2022, Southern Company disclosed that it provided notice to the lessee, CGLP, to terminate the related operating and maintenance agreement effective June 30, 2023. Subsequently, CGLP failed to make the semi-annual lease payment due in December 2022 and as a result, the Southern Company subsidiary was unable to make its corresponding payment to the debtholders. The parties to the lease have entered into a forbearance agreement which suspends the related contractual rights of the parties while they continue restructuring negotiations, which could result in rescission of the termination notice. The ultimate outcome of this matter cannot be determined at this time but could have a material impact on the Company's financial statements if the operating and maintenance agreement is terminated.

At all operating coal mines other than MLMC, the Company is paid a management fee per ton of coal or heating unit (MMBtu) delivered. Each contract specifies the indices and mechanics by which fees change over time, generally in line with broad measures of U.S. inflation. The customers are responsible for funding all mine operating costs, including final mine

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reclamation, and directly or indirectly provide all of the capital required to build and operate the mine. This contract structure eliminates exposure to spot coal market price fluctuations while providing income and cash flow with minimal capital investment. Other than at Coyote Creek, debt financing provided by or supported by the customers is without recourse to NACCO and NACoal. See Note 6 for further discussion of Coyote Creek's guarantees.

All operating coal mines other than MLMC meet the definition of a variable interest entity ("VIE"). In each case, NACCO is not the primary beneficiary of the VIE as it does not exercise financial control; therefore, NACCO does not consolidate the results of these operations within its financial statements. Instead, these contracts are accounted for as equity method investments. The income before income taxes associated with these VIEs is reported as Earnings of unconsolidated operations on the Unaudited Condensed Consolidated Statements of Operations and the Company’s investment is reported on the line Investments in unconsolidated subsidiaries in the Unaudited Condensed Consolidated Balance Sheets. The mines that meet the definition of a VIE are referred to collectively as the “Unconsolidated Subsidiaries.” For tax purposes, the Unconsolidated Subsidiaries are included within the NACCO consolidated U.S. tax return; therefore, the Income tax (benefit) provision line on the Unaudited Condensed Consolidated Statements of Operations includes income taxes related to these entities. See Note 6 for further information on the Unconsolidated Subsidiaries.

The Company performs contemporaneous reclamation activities at each mine in the normal course of operations. Under all of the Unconsolidated Subsidiaries’ contracts, the customer has the obligation to fund final mine reclamation activities. Under certain contracts, the Unconsolidated Subsidiary holds the mine permit and is therefore responsible for final mine reclamation activities. To the extent the Unconsolidated Subsidiary performs such final reclamation, it is compensated for providing those services in addition to receiving reimbursement from customers for costs incurred.

The MLMC contract is the only operating coal contract in which the Company is responsible for all operating costs, capital requirements and final mine reclamation; therefore, MLMC is consolidated within NACCO’s financial statements. MLMC sells coal to its customer at a contractually agreed-upon price which adjusts monthly, primarily based on changes in the level of established indices which reflect general U.S. inflation rates. Profitability at MLMC is affected by customer demand for coal and changes in the indices that determine sales price and actual costs incurred. As diesel fuel is heavily weighted among the indices used to determine the coal sales price, fluctuations in diesel fuel prices can result in significant fluctuations in earnings at MLMC.

See page 18 for information on the Resource Conservation and Recovery Act.

NAMining Segment

The NAMining segment provides value-added contract mining and other services for producers of industrial minerals. The segment is a platform for the Company’s growth and diversification of mining activities outside of the thermal coal industry. NAMining provides contract mining services for independently owned mines and quarries, creating value for its customers by performing the mining aspects of its customers’ operations. This allows customers to focus on their areas of expertise: materials handling and processing, product sales and distribution. As of March 31, 2023, NAMining operates mines in Florida, Texas, Arkansas, Indiana, Virginia and Nebraska and will serve as exclusive contract miner for the Thacker Pass lithium project in northern Nevada.

Certain of the entities within the NAMining segment are VIEs and are accounted for under the equity method as Unconsolidated Subsidiaries. See Note 6 for further discussion.

Minerals Management Segment

The Minerals Management segment derives income primarily by leasing its royalty and mineral interests to third-party exploration and production companies, and, to a lesser extent, other mining companies, granting them the rights to explore, develop, mine, produce, market and sell gas, oil, and coal in exchange for royalty payments based on the lessees' sales of those minerals.

The Minerals Management segment owns royalty interests, mineral interests, non-participating royalty interests and overriding royalty interests.

•Royalty Interest. Royalty interests generally result when the owner of a mineral interest leases the underlying minerals to an exploration and production company pursuant to an oil and gas lease. Typically, the resulting royalty interest is a cost-free percentage of production revenues for minerals extracted from the acreage. A holder of royalty interests is generally not responsible for capital expenditures or lease operating expenses, but royalty interests may be calculated net of post-production expenses, and typically has no environmental liability. Royalty interests leased to producers expire upon the expiration of the oil and gas lease and revert to the mineral owner.

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•Mineral Interest. Mineral interests are perpetual rights of the owner to explore, develop, exploit, mine and/or produce any or all of the minerals lying below the surface of the property. The holder of a mineral interest has the right to lease the minerals to an exploration and production company. Upon the execution of an oil and gas lease, the lessee (the exploration and production company) becomes the working interest owner and the lessor (the mineral interest owner) has a royalty interest.

•Non-Participating Royalty Interest (“NPRIs”). NPRI is an interest in oil and gas production which is created from the mineral estate. The NPRI is expense-free, bearing no operational costs of production. The term “non-participating” indicates that the interest owner does not share in the bonus, rentals from a lease, nor the right to participate in the execution of oil and gas leases. The NPRI owner does, however, typically receive royalty payments.

•Overriding Royalty Interest (“ORRIs”). ORRIs are created by carving out the right to receive royalties from a working interest. Like royalty interests, ORRIs do not confer an obligation to make capital expenditures or pay for lease operating expenses and have limited environmental liability; however, ORRIs may be calculated net of post-production expenses, depending on how the ORRI is structured. ORRIs that are carved out of working interests are linked to the same underlying oil and gas lease that created the working interest, and therefore, such ORRIs are typically subject to expiration upon the expiration or termination of the oil and gas lease.

The Company may own more than one type of mineral and royalty interest in the same tract of land. For example, where the Company owns an ORRI in a lease on the same tract of land in which it owns a mineral interest, the ORRI in that tract will relate to the same gross acres as the mineral interest in that tract.

The Minerals Management segment will benefit from the continued development of its mineral properties without the need for investment of additional capital once mineral and royalty interests have been acquired. The Minerals Management segment does not currently have any material investments under which it would be required to bear the cost of exploration, production or development.

The Company also manages legacy royalty and mineral interests located in Ohio (Utica and Marcellus shale natural gas), Louisiana (Haynesville shale and Cotton Valley formation natural gas), Texas (Cotton Valley and Austin Chalk formation natural gas), Mississippi (coal), Pennsylvania (coal, coalbed methane and Marcellus shale natural gas), Alabama (coal, coalbed methane and natural gas) and North Dakota (coal, oil and natural gas). The majority of the Company’s legacy reserves were acquired as part of its historical coal mining operations.

RESOURCE CONSERVATION AND RECOVERY ACT ("RCRA")

The RCRA affects coal mining operations by establishing requirements for the treatment, storage and disposal of wastes, including hazardous wastes. Coal mine wastes, such as overburden and coal cleaning wastes, currently are exempted from hazardous waste management. In 2014, the U.S. Environmental Protection Agency (the “EPA”) finalized a rule specifying management standards for coal combustion residuals or coal ash ("CCRs") as a non-hazardous waste. In 2018, the EPA finalized revisions to the 2014 regulations in response to litigation of the 2014 rule. One revision allows a state director (in a state with an approved CCR permit program) or the EPA (where EPA is the permitting authority) to suspend groundwater monitoring requirements if there is evidence that there is no potential for migration of hazardous constituents to the uppermost aquifer during the active life of the unit and post closure care. The second revision allows issuance of technical certifications in lieu of a professional engineer. In addition, the EPA revised the groundwater protection standards and extended the deadline for some facilities that must close CCR units. In 2020, the EPA finalized additional changes to the CCR rule that classified all clay-lined surface impoundments that receive CCR as unlined, which triggered a pond closure date of April 2021 for impoundments that failed the aquifer location restriction. The EPA also established alternative deadlines to cease receipt of waste to include new site-specific alternatives due to lack of capacity with a deadline to initiate closure no later than October 15, 2023 and a new site-specific alternative due to permanent cessation of coal-fired boilers with two deadlines to complete closure: (a) no later than October 17, 2023 for surface impoundments 40 acres or smaller; and (b) October 17, 2028 for surface impoundments larger than 40 acres. Additionally, the CCR Part B Final Rule allowed facilities to demonstrate that there is no reasonable probability of adverse effects to human health and the environment at non-conforming units. These new rules may raise the cost for CCR disposal at coal-fired power plants, making them less competitive, and/or result in early closure which could have an adverse impact on demand for coal and ultimately result in the early closure of the mines servicing these plants, including closure of the Company's mines.

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In compliance with the regulations, the owner of the Coal Creek Station power plant, Falkirk’s customer, submitted a Part B application to the EPA in 2020 asserting a unit complied with the CCR rules. In the first quarter of 2023, the EPA proposed to deny the owner’s application. The owner and other parties have submitted additional information and comments supporting the owner’s position and, as of May 2, 2023, the EPA has not taken further action. If EPA ultimately denies the owner’s application, a new liner may need to be installed or new waste management processes and/or units may need to be constructed. Accordingly, it is possible that a denial by the EPA could require a temporary unit shut down. Any temporary unit shut down could result in a temporary suspension of operations at Coal Creek Station. Falkirk is the sole supplier of lignite to Coal Creek Station. Any suspension of operations at Coal Creek Station would eliminate the need for lignite coal during the suspension period. Any such suspension of operations at Coal Creek Station or any of the power plants supplied by the Company's mines could have a material adverse effect on the Company’s business, financial condition and results of operations.

The EPA rule exempts CCRs beneficially used at mine sites and reserves any regulation thereof to the Office of Surface Mining Reclamation and Enforcement ("OSMRE"). The OSMRE suspended all rulemaking actions on CCRs, but could re-initiate them in the future. The outcome of these rulemakings, and any subsequent actions by the EPA and OSMRE, could impact those Company operations that beneficially use CCRs. If the Company were unable to beneficially use CCRs, its revenues for handling CCRs from its customers may decrease and its costs may increase due to the purchase of alternative materials for beneficial uses.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

Refer to the discussion of the Company's Critical Accounting Policies and Estimates as disclosed on pages 52 through 54 in the Company's Annual Report on Form 10-K for the year ended December 31, 2022. The Company's Critical Accounting Policies and Estimates have not materially changed since December 31, 2022.

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CONSOLIDATED FINANCIAL SUMMARY

The results of operations for NACCO were as follows for the three months ended March 31:

	THREE MONTHS
	2023			2022
Revenues:
Coal Mining	$	20,653		$	20,962
NAMining	20,633			21,404
Minerals Management	8,285			12,754
Unallocated Items	1,191			192
Eliminations	(621)			(289)
Total revenue	$	50,141		$	55,023
Operating profit (loss):
Coal Mining	$	313		$	7,352
NAMining	830			1,271
Minerals Management	6,044			11,628
Unallocated Items	(5,353)			(5,439)
Eliminations	(20)			132
Total operating profit	1,814			14,944
Interest expense	545			513
Interest income	(1,155)			(145)
Closed mine obligations	409			380
Gain on equity securities	(628)			(518)
Other, net	(1,725)			(230)
Other (income) expense, net	(2,554)			—
Income before income tax (benefit) provision	4,368			14,944
Income tax (benefit) provision	(1,324)			2,362
Net income	$	5,692		$	12,582
Effective income tax rate	(30.3)		%	15.8		%

The components of the change in revenues and operating profit are discussed below in "Segment Results."

First Quarter of 2023 Compared with First Quarter of 2022

Other (income) expense, net

Interest income increased $1.0 million primarily due to a higher average invested cash balance during 2023 compared with 2022 as well as an increase in interest rates.

Gain on equity securities represents changes in the market price of invested assets reported at fair value. The change in the first three months of 2023 compared with the 2022 period was due to fluctuations in the market prices of the exchange-traded equity securities. See Note 5 to the Unaudited Condensed Consolidated Financial Statements for further discussion of equity securities.

On December 1, 2022, the Company transferred its ownership interest in Midwest AgEnergy, LLC (“MAG”) to HLCP Ethanol Holdco, LLC (“HLCP”). The Company received a payment of $1.2 million in the first quarter of 2023 in connection with a post-closing purchase price adjustment, which is included on the line "Other, net" within the accompanying Unaudited Consolidated Statements of Operations. See Note 1 to the Unaudited Condensed Consolidated Financial Statement for further discussion of MAG.

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Income Taxes

The Company evaluates and updates its estimated annual effective income tax rate on a quarterly basis based on current and forecasted operating results and tax laws. Consequently, based upon the mix and timing of actual earnings compared to projections of earnings between entities that benefit from percentage depletion and those that do not, the effective tax rate may vary quarterly. The benefit of percentage depletion is not directly related to the amount of consolidated pre-tax income recorded in a period. Accordingly, as a result of the significant reduction in 2023 forecasted income before income tax compared with 2022, the proportional effect of the benefit from percentage depletion on the effective income tax rate results in a negative forecasted effective tax rate for 2023. Changes in the estimated annual effective tax rate result in a cumulative adjustment.

LIQUIDITY AND CAPITAL RESOURCES OF NACCO

Cash Flows

The following tables detail NACCO's changes in cash flow for the three months ended March 31:

	2023		2022		Change
Operating activities:
Net cash provided by (used for) operating activities	$	6,254	$	(1,070)	$	7,324
Investing activities:
Expenditures for property, plant and equipment and acquisition of mineral interests	(7,879)		(4,649)		(3,230)
Other	1,415		120		1,295
Net cash used for investing activities	(6,464)		(4,529)		(1,935)
Cash flow before financing activities	$	(210)	$	(5,599)	$	5,389

The $7.3 million change in net cash provided by (used for) operating activities was primarily due to a net favorable change in working capital, partially offset by a decrease in net income.

	2023		2022		Change
Financing activities:
Net borrowings to long-term debt and revolving credit agreement	$	656	$	2,659	$	(2,003)
Cash dividends paid	(1,557)		(1,445)		(112)
Net cash (used for) provided by financing activities	$	(901)	$	1,214	$	(2,115)

The change in net cash (used for) provided by financing activities was primarily due to fewer borrowings under the Company’s revolving line of credit during the first three months of 2023 compared with the first three months of 2022.

Financing Activities

Financing arrangements are obtained and maintained at the NACoal level. NACoal has a secured revolving line of credit of up to $150.0 million (the “NACoal Facility”) that expires in November 2025. There were no borrowings outstanding under the NACoal Facility at March 31, 2023. At March 31, 2023, the excess availability under the NACoal Facility was $117.0 million, which reflects a reduction for outstanding letters of credit of $33.0 million.

NACCO has not guaranteed any borrowings of NACoal. The borrowing agreements at NACoal allow for the payment to NACCO of dividends and advances under certain circumstances. Dividends (to the extent permitted by NACoal's borrowing agreement) and management fees are the primary sources of cash for NACCO and enable the Company to pay dividends to stockholders.

The NACoal Facility has performance-based pricing, which sets interest rates based upon NACoal achieving various levels of debt to EBITDA ratios, as defined in the NACoal Facility. Borrowings bear interest at a floating rate plus a margin based on the level of debt to EBITDA ratio achieved. The applicable margins, effective March 31, 2023, for base rate and LIBOR loans were 1.23% and 2.23%, respectively. The NACoal Facility has a commitment fee which is based upon achieving various levels of debt to EBITDA ratios. The commitment fee was 0.34% on the unused commitment at March 31, 2023.

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The NACoal Facility contains restrictive covenants, which require, among other things, NACoal to maintain a maximum net debt to EBITDA ratio of 2.75 to 1.00 and an interest coverage ratio of not less than 4.00 to 1.00. The NACoal Facility provides the ability to make loans, dividends and advances to NACCO, with some restrictions based on maintaining a maximum debt to

EBITDA ratio of 1.50 to 1.00, or if greater than 1.50 to 1.00, a Fixed Charge Coverage Ratio of 1.10 to 1.00, in conjunction with maintaining unused availability thresholds of borrowing capacity, as defined in the NACoal Facility, of $15.0 million. At March 31, 2023, NACoal was in compliance with all financial covenants in the NACoal Facility.

The obligations under the NACoal Facility are guaranteed by certain of NACoal's direct and indirect, existing and future

domestic subsidiaries, and is secured by certain assets of NACoal and the guarantors, subject to customary exceptions and

limitations.

The Company believes funds available from cash on hand, the NACoal Facility and operating cash flows will provide sufficient liquidity to meet its operating needs and commitments arising during the next twelve months and until the expiration of the NACoal Facility in November 2025.

Expenditures for property, plant and equipment and mineral interests

Expenditures for property, plant and equipment and mineral interests were $7.9 million during the first three months of 2023. Planned expenditures for the remainder of 2023 are expected to be approximately $32 million in the NAMining segment, $21 million in the Minerals Management segment, $10 million in the Coal Mining segment and $1 million at Mitigation Resources.

In the NAMining segment, 2023 capital expenditures are primarily related to the acquisition of equipment to be used at the

Thacker Pass lithium project. Sawtooth is the contract miner for the Thacker Pass project. Under the terms of the contract

mining agreement, the customer will reimburse Sawtooth for these capital expenditures over a five-year period from the

equipment acquisition date.

Expenditures are expected to be funded from internally generated funds and/or bank borrowings.

Capital Structure

NACCO's consolidated capital structure is presented below:

	MARCH 31 2023		DECEMBER 31 2022		Change
Cash and cash equivalents	$	109,637	$	110,748	$	(1,111)
Other net tangible assets	336,347		329,045		7,302
Intangible assets, net	27,328		28,055		(727)
Net assets	473,312		467,848		5,464
Total debt	(20,377)		(19,668)		(709)
Bellaire closed mine obligations	(21,249)		(21,214)		(35)
Total equity	$	431,686	$	426,966	$	4,720
Debt to total capitalization	5%		4%		1%

The increase in other net tangible assets at March 31, 2023 compared with December 31, 2022 was mainly the result of an increase in Prepaid insurance due to timing and a decrease in Accrued payroll for payments made during the first quarter of 2023 under the Company's incentive compensation plans. These increases were partially offset by a decrease in Trade accounts receivable due to lower revenue in the first quarter of 2023 compared with the fourth quarter of 2022.

Contractual Obligations, Contingent Liabilities and Commitments

Since December 31, 2022, there have been no significant changes in the total amount of NACCO's contractual obligations, contingent liabilities or commercial commitments, or the timing of cash flows in accordance with those obligations as reported on page 58 in the Company's Annual Report on Form 10-K for the year ended December 31, 2022. See Note 6 to the Unaudited Condensed Consolidated Financial Statements for a discussion of certain guarantees related to Coyote Creek.

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SEGMENT RESULTS

COAL MINING SEGMENT

FINANCIAL REVIEW

Tons of coal delivered by the Coal Mining segment were as follows for the three months ended March 31:

	THREE MONTHS
	2023	2022
Unconsolidated operations	6,192	6,317
Consolidated operations	711	732
Total tons delivered	6,903	7,049

The results of operations for the Coal Mining segment were as follows for the three months ended March 31:

	THREE MONTHS
	2023		2022
Revenues	$	20,653	$	20,962
Cost of sales	25,878		18,850
Gross (loss) profit	(5,225)		2,112
Earnings of unconsolidated operations(a)	12,466		13,326
Selling, general and administrative expenses	6,437		7,239
Amortization of intangible assets	727		847
Gain on sale of assets	(236)		—
Operating profit	$	313	$	7,352

(a) See Note 6 to the Unaudited Condensed Consolidated Financial Statements for a discussion of the Company's unconsolidated subsidiaries, including summarized financial information.

Revenues in the first quarter of 2023 were comparable to the first quarter of 2022.

The following table identifies the components of change in operating profit for the first quarter of 2023 compared with the first quarter of 2022:

	Operating Profit
2022	$	7,352
Increase (decrease) from:
Gross profit, excluding inventory impairment charge	(4,913)
Inventory impairment charge	(2,424)
Earnings of unconsolidated operations	(860)
Selling, general and administrative expenses	802
Gain on sale of assets	236
Amortization of intangibles	120
2023	$	313

Operating profit decreased $7.0 million in the first quarter of 2023 compared with the first quarter of 2022 due to a decrease in gross profit and a decrease in the earnings of unconsolidated operations, partially offset by lower selling, general and administrative expenses.

The decrease in gross profit was primarily due to an increase in the cost per ton delivered at MLMC as well as a $2.4 million inventory impairment charge. All production costs are capitalized into inventory at MLMC. The increase in cost per ton delivered at MLMC is due to costs associated with establishing operations in a new mine area and a reduction in the number of tons severed. The reduction in severed tons was due to adverse mining conditions caused by the amount of rain during the first quarter of 2023, as well as operational inefficiencies related to final mining activities at the existing mine area. Fewer tons

23

severed caused a decrease in tons held in inventory since more tons were sold than produced during the first quarter of 2023, which resulted in an increase in the cost per ton and an inventory impairment charge to write down coal inventory to its net realizable value.

The decrease in earnings of unconsolidated operations was primarily due to a reduction in the per ton management fee at Falkirk effective May 2022 through May 2024 to support the transition of the Coal Creek Station Power Plant to Rainbow Energy. This decrease in earnings of unconsolidated operations was partly offset by improved results at Coteau and at Sabine.

The decrease in selling, general and administrative expenses was primarily due to lower professional service expenses.

NORTH AMERICAN MINING ("NAMining") SEGMENT

FINANCIAL REVIEW

Tons delivered by the NAMining segment were as follows for the three months ended March 31:

	THREE MONTHS
	2023	2022
Total tons delivered	14,829	13,962

The results of operations for the NAMining segment were as follows for the three months ended March 31:

	THREE MONTHS
	2023		2022
Total revenues	$	20,633	$	21,404
Reimbursable costs	12,092		12,016
Revenues excluding reimbursable costs	$	8,541	$	9,388
Total revenues	$	20,633	$	21,404
Cost of sales	19,241		19,650
Gross profit	1,392		1,754
Earnings of unconsolidated operations(a)	1,358		1,266
Selling, general and administrative expenses	1,920		1,754
Gain on sale of assets	—		(5)
Operating profit	$	830	$	1,271

(a) See Note 6 to the Unaudited Condensed Consolidated Financial Statements for a discussion of the Company's unconsolidated subsidiaries, including summarized financial information.

Total revenues decreased 3.6% in the first quarter of 2023 compared with the first quarter of 2022 primarily due to a reduction in revenue as final mine reclamation activities at Caddo Creek were substantially completed in 2022. This decrease was partially offset by a modest increase in customer requirements.

The following table identifies the components of change in operating profit for the first quarter of 2023 compared with the first quarter of 2022:

	Operating Profit
2022	$	1,271
Increase (decrease) from:
Gross profit	(362)
Selling, general and administrative expenses	(166)
Gain on sale of assets	(5)
Earnings of unconsolidated operations	92
2023	$	830

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Operating profit decreased $0.4 million in the first quarter of 2023 compared with the first quarter of 2022 primarily due to a decrease in gross profit and an increase in selling, general and administrative expenses. The decrease in gross profit was due to a reduction in earnings at Caddo Creek as final mine reclamation activities were substantially completed in 2022, partially offset by higher earnings at the consolidated quarries. The increase in selling, general and administrative expenses was mainly due to higher costs at Sawtooth Mining for the Thacker Pass lithium project.

MINERALS MANAGEMENT SEGMENT

FINANCIAL REVIEW

The results of operations for the Minerals Management segment were as follows for the three months ended March 31:

	THREE MONTHS
	2023		2022
Revenues	$	8,285	$	12,754
Cost of sales	1,052		748
Gross profit	7,233		12,006
Selling, general and administrative expenses	1,189		509
Gain on sale of assets	—		(131)
Operating profit	$	6,044	$	11,628

During the first quarter of 2023, the oil and natural gas industry experienced a decline in commodity prices compared with the first quarter of 2022. Oil and natural gas prices have been historically volatile and may continue to be volatile in the future. The table below demonstrates such volatility with the average price as reported by the United States Energy Information Administration for the three months ended March 31:

	THREE MONTHS
	2023		2022
West Texas Intermediate Average Crude Oil Price	$	76.08	$	94.45
Henry Hub Average Natural Gas Price	$	2.65	$	4.66

Revenues and operating profit decreased significantly in the first quarter of 2023 compared with the first quarter of 2022, primarily due to substantially lower natural gas and oil prices and a reduction in volumes as existing wells followed their natural production decline. In addition, the first quarter of 2022 included $2.1 million of settlement income. An increase in selling, general and administrative expenses, mainly due to higher employee-related costs, also contributed to the decrease in operating profit.

UNALLOCATED ITEMS AND ELIMINATIONS

FINANCIAL REVIEW

Unallocated Items and Eliminations were as follows for the three months ended March 31:

	THREE MONTHS
	2023		2022
Operating loss	$	(5,373)	$	(5,307)

The operating loss in the the first quarter of 2023 was comparable to the first quarter of 2022.

NACCO Industries, Inc. Outlook

Coal Mining Outlook

In 2023, the Company expects coal deliveries to decrease moderately from 2022 levels. The owner of the power plant served by the Company's Sabine Mine in Texas retired the Pirkey power plant in March 2023, and as a result Sabine ceased deliveries in March 2023. The cessation of these deliveries is the primary driver for the year-over-year decline.

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Coal Mining operating profit and Segment Adjusted EBITDA for the 2023 full year are expected to decrease significantly year-over-year, including and excluding the $14.0 million termination payment received from Falkirk's former customer, Great River Energy, in 2022. The decline is primarily the result of an expected significant reduction in earnings at the consolidated operations and an anticipated moderate decrease in earnings of unconsolidated operations.

Results at the consolidated mining operations are projected to decrease significantly in 2023 versus 2022. The decrease is mainly due to an expected substantial decline in earnings at MLMC from increased costs associated with establishing operations in a new mine area, as well as higher depreciation expense related to recent capital expenditures to develop this new mine area. The anticipated ongoing inefficiencies of this project are expected to continue through the third quarter of 2023, and then moderate in the fourth quarter of 2023 and into 2024. MLMC does not anticipate opening additional mine areas through the remaining contract term. As a result, mine development capital expenditures should moderate from 2024 through 2032. While increased depreciation from capital expenditures related to the new mine area will affect future results, the Company anticipates MLMC should contribute favorably to Segment Adjusted EBITDA in future years. In 2023, capital expenditures are expected to be approximately $12 million, primarily for mine development and equipment replacement.

The anticipated lower earnings at the unconsolidated coal mining operations is expected to be driven primarily by temporary price concessions at Falkirk through May 2024. This will result in a reduction in the per ton management fee for 12 months in 2023 compared with eight months in 2022. The early retirement of the Pirkey power plant and commencement of final reclamation of the Sabine Mine started on April 1, 2023 will also contribute to the reduction in earnings. Sabine will receive compensation for providing final mine reclamation services, but at a lower rate than during active mining. Funding for Sabine's mine reclamation is the responsibility of the customer.

The Company's contract structure at each of its coal mining operations eliminates exposure to spot coal market price fluctuations. However, fluctuations in natural gas prices and the availability of renewable power generation, particularly wind, can contribute to changes in power plant dispatch and customer demand for coal. Changes to customer power plant dispatch would affect the Company’s outlook for 2023, as well as over the longer term.

NAMining Outlook

Despite an expected continuation of improved results at the aggregates operations for the remaining quarters of 2023, operating profit at NAMining is expected to decrease moderately in full-year 2023 compared with 2022. The decrease is due to the substantial completion of income-generating mine reclamation activities at Caddo Creek in mid-2022. Segment Adjusted EBITDA is expected to improve over 2022 because of a significant increase in depreciation expense. The increased depreciation expense is driven by elevated historical capital expenditures to support NAMining's growth initiatives.

A number of initiatives are underway or in the planning stages that are expected to support improved future financial results at NAMining's mining operations. Until profit improves at existing operations, NAMining has narrowed its business development efforts.

In 2023, NAMining capital expenditures are expected to be approximately $37 million primarily for the acquisition of equipment to support the Thacker Pass lithium project.

Minerals Management Outlook

The Minerals Management segment derives income from royalty-based leases under which lessees make payments to the Company based on their sale of natural gas, oil, natural gas liquids and coal, extracted primarily by third parties. Changing prices of natural gas and oil have a significant impact on Minerals Management’s operating profit.

In 2023, operating profit and Segment Adjusted EBITDA are expected to decrease significantly compared with 2022. This decrease is primarily driven by current market expectations for natural gas and oil prices, an anticipated reduction in volumes as existing wells follow their natural production decline and modest expectations for development of new wells by third-party exploration and production companies.

Based on market expectations, the Company's forecast assumes oil and gas market prices will continue to moderate in 2023 to levels in line with 2021 averages; however, commodity prices are inherently volatile. An increase in natural gas and oil prices above current expectations could result in improvements to the 2023 forecast.

As an owner of royalty and mineral interests, the Company’s access to information concerning activity and operations with respect to its interests is limited. The Company's expectations are based on the best information currently available and could

26

vary positively or negatively as a result of adjustments made by operators, additional leasing and development and/or changes to commodity prices. Development of additional wells on existing interests in excess of current expectations could be accretive to future results.

In 2023, the Minerals Management expects capital expenditures of approximately $21 million, which includes up to $20 million of additional investments in mineral and royalty interests. Future investments are expected to be accretive, but each investment's contribution to near-term earnings is dependent on the details of that investment, including the size and type of interests acquired and the stage and timing of mineral development.

Consolidated Outlook

Management continues to view the long-term business outlook for NACCO positively, despite an expected significant decrease in 2023 consolidated net income versus 2022 in part because 2022 included $30.9 million of pre-tax contract settlement income. Excluding the contract termination settlement income recognized in the 2022 second quarter, net income in the first half of 2023 is still expected to be significantly lower than the first half of 2022. The decrease is primarily driven by an expected significant reduction in earnings at the Minerals Management and Coal Mining segments. At Minerals Management, the decrease in the first half of 2023 is primarily driven by an expected significant reduction in commodity prices from historically high price levels in the first half of 2022. At the Coal Mining segment, increased costs associated with establishing operations in a new mine area as well as an anticipated reduction in inventory levels during the first half of 2023 will result in a higher cost per ton that will reduce earnings at MLMC. In addition, a reduction in earnings from the unconsolidated mines, primarily Falkirk, is expected to contribute to the decrease. These reductions are expected to be partially offset by lower income tax expense. The Company expects a negative effective income tax rate between 30% and 35% in 2023.

Mitigation Resources of North America® continued to build on the substantial foundation established over the past several years and ended the 2023 first quarter with eight mitigation banks and four permittee-responsible mitigation projects located in Tennessee, Mississippi, Alabama and Texas. Mitigation Resources was recently named a designated provider of abandoned mine land restoration by the State of Texas. It plans to provide ecological restoration services for abandoned surface mines as well as pursue additional environmental restoration projects during 2023.

In 2023, the Company expects capital expenditures of approximately $72 million, which includes up to $20 million of investments at Minerals Management. Future investments at Minerals Management are expected to continue to align with the Company’s strategy and objectives to establish a blended portfolio of mineral and royalty interests. As a result of the forecasted capital expenditures and anticipated substantial decrease in net income, cash flow before financing activities in 2023 is expected to be positive but decline significantly from 2022.

Long-term Growth and Diversification Outlook

The Company is pursuing growth and diversification by strategically leveraging its core mining and natural resources management skills to build a strong portfolio of affiliated businesses. Management continues to be optimistic about the long-term outlook. In the Minerals Management segment, as well as in the Company's Mitigation Resources business, opportunities for growth remain strong. Acquisitions of additional mineral interests, an improvement in the 2024 outlook for the Company's largest Coal Mining segment customers and securing contracts for Mitigation Resources and new NAMining projects could be accretive to the Company's outlook.

The Minerals Management segment continues to pursue acquisitions of mineral and royalty interests in the United States. The Minerals Management segment expects to benefit from the continued development of its mineral properties without additional capital investment, as development costs are borne entirely by third-party exploration and development companies who lease the minerals. This business model can deliver higher average operating margins over the life of a reserve than traditional oil and gas companies that bear the cost of exploration, production and/or development. Catapult, the Company’s business unit focused on managing and expanding the Company’s portfolio of oil and gas mineral and royalty interests, has developed a strong network to source and secure new acquisitions. The goal is to construct a high-quality diversified portfolio of oil and gas mineral and royalty interests in the United States that delivers near-term cash flow yields and long-term projected growth. The Company believes this business will provide unlevered after-tax returns on invested capital in the mid-teens as this business model matures.

The Company remains committed to expanding the NAMining business while improving profitability. NAMining intends to be a substantial contributor to operating profit over time. The pace of achieving that objective will be dependent on the execution and successful implementation of profit improvement initiatives in the aggregates operations, and the mix and scale of new projects. The Sawtooth Mining lithium project is expected to contribute more significantly when production commences at

27

Thacker Pass.

Sawtooth Mining has a mining services agreement to serve as the exclusive contract miner for the Thacker Pass lithium project in northern Nevada, owned by Lithium Nevada Corp., a subsidiary of Lithium Americas Corp. (TSX: LAC) (NYSE: LAC). Lithium Americas owns the lithium reserves at Thacker Pass. On March 2, 2023, Lithium Americas announced that construction has commenced. Phase 1 production is projected to begin in the second half of 2026. Sawtooth Mining plans to begin acquiring equipment for this project in 2023. Under the terms of the contract mining agreement, Lithium Americas will reimburse Sawtooth for these capital expenditures over a five-year period from the equipment acquisition date. Sawtooth will be reimbursed for all costs of mine construction plus a construction fee. The Company expects to recognize moderate income in 2024 and 2025 prior to commencement of production in 2026. Once production commences, Sawtooth will receive a management fee per metric ton of lithium delivered. At maturity, this contract is expected to deliver fee income similar to a mid-sized management fee coal mine.

Mitigation Resources continues to expand its business, which creates and sells stream and wetland mitigation credits and provides services to those engaged in permittee-responsible mitigation as well as provides other environmental restoration services. This business offers an opportunity for growth and diversification in an industry where the Company has substantial knowledge and expertise and a strong reputation. Mitigation Resources is making strong progress toward its goal of becoming a top ten provider of stream and wetland mitigation services in the southeastern United States. The Company believes that Mitigation Resources can provide solid rates of return as this business matures.

The Company also continues to pursue activities which can strengthen the resiliency of its existing coal mining operations. The Company remains focused on managing coal production costs and maximizing efficiencies and operating capacity at mine locations to help customers with management fee contracts be more competitive. These activities benefit both customers and the Company's Coal Mining segment, as fuel cost is a significant driver for power plant dispatch. Increased power plant dispatch results in increased demand for coal by the Coal Mining segment's customers. Fluctuating natural gas prices and availability of renewable energy sources, such as wind and solar, could affect the amount of electricity dispatched from coal-fired power plants. While the Company realizes the coal mining industry faces political and regulatory challenges and demand for coal is projected to decline over the longer-term, the Company believes coal will be an essential part of the energy mix in the United States for the foreseeable future. Subsequent to 2023, the Coal Mining segment expects increased profitability compared with 2023 expectations due in part to improvements at Falkirk and MLMC. At Falkirk, the temporary price concessions end in June 2024. At MLMC, the move to a new mine area will be completed during 2023, and as a result, cost per ton delivered in 2024 is expected to moderate. In addition, certain costs incurred at MLMC in 2023 will be passed through to the customer and included in revenues in 2024.

The Company continues to look for ways to create additional value by utilizing its core mining competencies which include reclamation and permitting. One such way the Company may be able to utilize these skills is through development of utility-scale solar projects on reclaimed mining properties. Reclaimed mining properties offer large tracts of land that could be well-suited for solar and other energy-related projects. These projects could be developed by the Company itself or through joint ventures that include partners with expertise in energy development projects. During the first quarter of 2023, the Company acquired 100% of the membership interests in the Marshall Mine, where Caddo Creek had been performing mine reclamation work. The Company is considering development of a utility-scale solar project at this location.

The Company is committed to maintaining a conservative capital structure as it continues to grow and diversify, while avoiding unnecessary risk. Strategic diversification will generate cash that can be re-invested to strengthen and expand the businesses. The Company also continues to maintain the highest levels of customer service and operational excellence with an unwavering focus on safety and environmental stewardship.

FORWARD-LOOKING STATEMENTS

The statements contained in this Form 10-Q that are not historical facts are “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These forward-looking statements are made subject to certain risks and uncertainties, which could cause actual results to differ materially from those presented. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. The Company undertakes no obligation to publicly revise these forward-looking statements to reflect events or circumstances that arise after the date hereof. Among the factors that could cause plans, actions and results to differ materially from current expectations are, without limitation: (1) changes to or termination of customer or other third-party contracts, or a customer or other third party default under a contract, (2) any customer's premature facility closure, (3) a significant reduction in purchases by the Company's customers, including as a result of changes in coal consumption patterns of U.S. electric power

28

generators, or changes in the power industry that would affect demand for the Company's coal and other mineral reserves, (4) changes in the prices of hydrocarbons, particularly diesel fuel, natural gas, natural gas liquids and oil, (5) failure or delays by the Company's lessees in achieving expected production of natural gas and other hydrocarbons; the availability and cost of transportation and processing services in the areas where the Company's oil and gas reserves are located; federal and state legislative and regulatory initiatives relating to hydraulic fracturing; and the ability of lessees to obtain capital or financing needed for well-development operations and leasing and development of oil and gas reserves on federal lands, (6) failure to obtain adequate insurance coverages at reasonable rates, (7) supply chain disruptions, including price increases and shortages of parts and materials, (8) changes in tax laws or regulatory requirements, including the elimination of, or reduction in, the percentage depletion tax deduction, changes in mining or power plant emission regulations and health, safety or environmental legislation, (9) the ability of the Company to access credit in the current economic environment, or obtain financing at reasonable rates, or at all, and to maintain surety bonds for mine reclamation as a result of current market sentiment for fossil fuels, (10) impairment charges, (11) the effects of investors’ and other stakeholders’ increasing attention to environmental, social and governance matters, (12) changes in costs related to geological and geotechnical conditions, repairs and maintenance, new equipment and replacement parts, fuel or other similar items, (13) regulatory actions, changes in mining permit requirements or delays in obtaining mining permits that could affect deliveries to customers, (14) weather conditions, extended power plant outages, liquidity events or other events that would change the level of customers' coal or aggregates requirements, (15) weather or equipment problems that could affect deliveries to customers, (16) changes in the costs to reclaim mining areas, (17) costs to pursue and develop new mining, mitigation, oil and gas and solar development opportunities and other value-added service opportunities, (18) delays or reductions in coal or aggregates deliveries, (19) the ability to successfully evaluate investments and achieve intended financial results in new business and growth initiatives, (20) disruptions from natural or human causes, including severe weather, accidents, fires, earthquakes and terrorist acts, any of which could result in suspension of operations or harm to people or the environment, and (21) the ability to attract, retain, and replace workforce and administrative employees.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

As a “smaller reporting company” as defined by Rule 12b-2 of the Securities Exchange Act of 1934, the Company is not required to provide this information.

Item 4. Controls and Procedures

Evaluation of disclosure controls and procedures:  An evaluation was carried out under the supervision and with the participation of the Company's management, including the principal executive officer and the principal financial officer, of the effectiveness of the Company's disclosure controls and procedures as of the end of the period covered by this report. Based on that evaluation, these officers have concluded that the Company's disclosure controls and procedures are effective.

Changes in internal control over financial reporting: During the first quarter of 2023, there have been no changes in the Company's internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, the Company's internal control over financial reporting.

29

PART II

OTHER INFORMATION

Item 1    Legal Proceedings

    None.

Item 1A    Risk Factors

During the quarter ended March 31, 2023, there have been no material changes to the risk factors previously disclosed in the Company's Annual Report on Form 10-K for the year ended December 31, 2022, except as follows:

The coal mining industry is subject to ongoing complex governmental regulations and legislation that could adversely impact the Company’s long-term mining contracts and the Company’s results of operations, liquidity, financial condition and cash flow.

The United States Environmental Protection Agency (the “EPA”) has a comprehensive regulatory program to manage the disposal of coal combustion residuals (“CCR”) from coal-fired power plants as non-hazardous material under the Resource Conservation and Recovery Act (“RCRA”). Individual states administer some or all of the provisions of RCRA. The North Dakota Department of Environmental Quality approved Falkirk’s customer's plan for an alternate disposal liner to store coal ash at the Coal Creek Station power plant. In the first quarter of 2023, the EPA proposed to deny the application. If denied, a new liner or new waste management unit(s) may need to be installed which could result in the temporary suspension of operations at Coal Creek Station. Falkirk is the sole supplier of lignite to Coal Creek Station. Any suspension of operations at Coal Creek Station would eliminate the need for lignite coal during the suspension period. Any such suspension of operations at Coal Creek Station or any of the power plants supplied by the Company's mines could have a material adverse effect on the Company’s business, financial condition and results of operations.

Item 2    Unregistered Sales of Equity Securities and Use of Proceeds

Purchases of Equity Securities by the Issuer and Affiliated Purchasers

Issuer Purchases of Equity Securities (1)
Period	(a) Total Number of Shares Purchased	(b) Average Price Paid per Share		(c) Total Number of Shares Purchased as Part of the Publicly Announced Program	(d) Maximum Dollar Value of Shares that May Yet Be Purchased Under the Program (1)
Month #1 (January 1 to 31, 2023)	—	$	—	—	$	22,659,516
Month #2 (February 1 to 28, 2023)	—	$	—	—	$	22,659,516
Month #3 (March 1 to 31, 2023)	—	$	—	—	$	22,659,516
Total	—	$	—	—	$	22,659,516

(1)    During 2021, the Company established a stock repurchase program allowing for the purchase of up to $20.0 million of the Company's Class A Common Stock outstanding through December 31, 2023. See Note 4 to the Unaudited Condensed Consolidated Financial Statements for further discussion of the Company's stock repurchase program.

Item 3    Defaults Upon Senior Securities

    None.

Item 4    Mine Safety Disclosures

Information concerning mine safety violations or other regulatory matters required by Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act and Item 104 of Regulation S-K is included in Exhibit 95 filed with this Quarterly Report on Form 10-Q for the period ended March 31, 2023.

30

Item 5    Other Information

    None.

Item 6    Exhibits

Exhibit
Number*	Description of Exhibits
31(i)(1)	Certification of J.C. Butler, Jr. pursuant to Rule 13a-14(a)/15d-14(a) of the Exchange Act
31(i)(2)	Certification of Elizabeth I. Loveman pursuant to Rule 13a-14(a)/15d-14(a) of the Exchange Act
32	Certifications pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, signed and dated by J.C. Butler, Jr. and Elizabeth I. Loveman
95	Mine Safety Disclosure Exhibit
101.INS	Inline XBRL Instance Document
101.SCH	Inline XBRL Taxonomy Extension Schema Document
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document
104	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

*    Numbered in accordance with Item 601 of Regulation S-K.

31

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.

		NACCO Industries, Inc. (Registrant)
Date:	May 3, 2023	/s/ Elizabeth I. Loveman
		Elizabeth I. Loveman
		Vice President and Controller (principal financial and accounting officer)

32

EX-31.1

Exhibit 31(i)(1)

Certifications

I, J.C. Butler, Jr., certify that:

1.I have reviewed this quarterlyreport on Form 10-Q of NACCO Industries, Inc.;

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 thisreport, 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.

Date:	May 3, 2023	/s/ J.C. Butler, Jr.
		J.C. Butler, Jr.
		President and Chief Executive Officer (principal executive officer)

EX-31.2

Exhibit 31(i)(2)

Certifications

I, Elizabeth I. Loveman, certify that:

1.I have reviewed this quarterlyreport on Form 10-Q of NACCO Industries, Inc.;

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 thisreport, 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.

Date:	May 3, 2023	/s/ Elizabeth I. Loveman
		Elizabeth I. Loveman
		Vice President and Controller (principal financial officer)

EX-32

Exhibit 32

CERTIFICATION 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 on Form 10-Q of NACCO Industries, Inc. (the "Company") for the quarter ended March 31, 2023, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), each of the undersigned officers of the Company certifies, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that, to such officer's 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 as of the dates and for the periods expressed in the Report.

Date:	May 3, 2023	/s/ J.C. Butler, Jr.
		J.C. Butler, Jr.
		President and Chief Executive Officer (principal executive officer)

Date:	May 3, 2023	/s/ Elizabeth I. Loveman
		Elizabeth I. Loveman
		Vice President and Controller (principal financial officer)

EX-95

Exhibit 95

MINE SAFETY DISCLOSURES

NACCO Industries, Inc. and its wholly owned subsidiaries (the “Company”) believes that The North American Coal Corporation and its affiliated coal companies (collectively, “NACoal”) is an industry leader in safety. NACoal has health and safety programs in place that include extensive employee training, accident prevention, workplace inspection, emergency response, accident investigation, regulatory compliance and program auditing. The objectives for NACoal's programs are to eliminate workplace incidents, comply with all mining-related regulations and provide support for both regulators and the industry to improve mine safety.

Under the Dodd-Frank Wall Street Reform and Consumer Protection Act, each operator of a coal or other mine is required to include certain mine safety results in its periodic reports filed with the Securities and Exchange Commission. The operation of NACoal's mines is subject to regulation by the Federal Mine Safety and Health Administration ("MSHA") under the Federal Mine Safety and Health Act of 1977 (the "Mine Act"). MSHA inspects NACoal's mines on a regular basis and issues various citations and orders when it believes a violation has occurred under the Mine Act. The Company has presented information below regarding certain mining safety and health matters for NACoal's mining operations for the quarter ended March 31, 2023. In evaluating this information, consideration should be given to factors such as: (i) the number of citations and orders will vary depending on the size of the mine, (ii) the number of citations issued will vary from inspector to inspector and from mine to mine, and (iii) citations and orders can be contested and appealed, and in that process, are often reduced in severity and amount, and are sometimes vacated.

During the quarter ended March 31, 2023, neither NACoal's current mining operations nor Bellaire's closed mines: (i) were assessed any Mine Act section 104(b) orders for alleged failure to totally abate the subject matter of a Mine Act section 104(a) citation within the period specified in the citation; (ii) were assessed any Mine Act section 104(d) citations or orders for an alleged unwarrantable failure (i.e., aggravated conduct constituting more than ordinary negligence) to comply with a mining safety standard or regulation; (iii) were assessed any Mine Act section 110(b)(2) penalties for failure to correct the subject matter of a Mine Act section 104(a) citation within the specified time period, which failure was deemed flagrant (i.e., reckless or repeated failure to make reasonable efforts to eliminate a known violation that substantially and proximately caused, or reasonably could have been expected to cause, death or serious bodily injury); (iv) received any Mine Act section 107(a) imminent danger orders to immediately remove miners; or (v) received any MSHA written notices under Mine Act section 104(e) of a pattern of violation of mandatory health or safety standards or of the potential to have such a pattern. In addition, there were no mining-related fatalities at NACoal's mining operations or Centennial or Bellaire's closed mines during the quarter ended March 31, 2023.

The following table sets forth the total number of specific citations and orders, the total dollar value of the proposed civil penalty assessments that were issued by MSHA, the total number of legal actions initiated and resolved before the Federal Mine Safety and Health Review Commission ("FMSHRC") during the quarter ended March 31, 2023, and the total number of legal actions pending before the FMSHRC at March 31, 2023, pursuant to the Mine Act, by individual mine at NACoal:

Name of Mine or Quarry (1)	Mine Act Section 104 Significant & Substantial Citations (2)	Total Dollar Value of Proposed MSHA Assessment		Number of Legal Actions Initiated before the FMSHRC for the quarter ended March 31, 2023	Number of Legal Actions Resolved before the FMSHRC for the quarter ended March 31, 2023	Number of Legal Actions Pending before the FMSHRC at March 31, 2023 (3)
Coteau (Freedom Mine)	—	$	—	—	—	—
Falkirk (Falkirk Mine)	—	—		—	—	—
Sabine (South Hallsville No. 1 Mine)	—	353		—	—	—
Demery (Five Forks Mine)	—	—		—	—	—
Caddo Creek (Marshall Mine)	—	—		—	—	—
Coyote Creek (Coyote Creek Mine)	—	143		—	—	—
MLMC (Red Hills Mine)	—	—		—	—	—
North American Mining Operations:	—	—		—	—	—
Alico Quarry	—	—		—	—	—
Card Sound Quarry	—	—		—	—	—
Center Hill Quarry	—	—		—	—	—
FEC Quarry	—	—		—	—	—
Inglis Quarry	—	—		—	—	—
Krome Quarry	—	—		—	—	—
SCL Quarry	—	—		—	—	—
St. Catherine Quarry	—	—		—	—	—
Seven Diamonds Quarry	—	—		—	—	—
Central State Aggregates Quarry	—	—		—	—	—
Johnson County Quarry	—	—		—	—	—
Little River Quarry (3)	—	428		—	—	1
Mid Coast Aggregates Quarry	—	—		—	—	—
Newberry Quarry	—	—		—	—	—
County Line Quarry	—	—		—	—	—
Palm Beach Aggregates Quarry	—	—		—	—	—
Perry Quarry	—	—		—	—	—
Queensfield Mine	—	—		—	—	—
Rosser Quarry	—	—		—	—	—
SDI Aggregates Quarry	—	—		—	—	—
West Florida Aggregates Quarry	1	—		—	—	—
Titan Corkscrew Quarry	—	—		—	—	—
White Rock Quarry - North	—	428		—	—	—
Total	1	$	1,352	—	—	1

(1) Bellaire's, Centennial's, Liberty's and Camino Real's closed mines are not included in the table above and did not receive any of the indicated citations.

(2) Mine Act section 104(a) significant and substantial citations are for alleged violations of a mining safety standard or regulation where there exists a reasonable likelihood that the hazard contributed to or will result in an injury or illness of a reasonably serious nature.

(3) The pending legal action at Little River Quarry is a contest of citations received and a contest of proposed legal penalties.

XML

Cover Page - shares	3 Months Ended
	Mar. 31, 2023	Apr. 28, 2023
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2023
Document Transition Report	false
Entity File Number	1-9172
Entity Registrant Name	NACCO INDUSTRIES, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	34-1505819
Entity Address, Address Line One	5875 Landerbrook Drive
Entity Address, Address Line Two	Suite 220
Entity Address, City or Town	Cleveland,
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	44124-4069
City Area Code	(440)
Local Phone Number	229-5151
Title of 12(b) Security	Class A Common Stock, $1 par value per share
Trading Symbol	NC
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0000789933
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Amendment Flag	false
Shares Outstanding Class A
Entity Information [Line Items]
Shares Outstanding (in shares)		5,944,585
Shares Outstanding Class B
Entity Information [Line Items]
Shares Outstanding (in shares)		1,565,929

XML

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
ASSETS
Cash and cash equivalents	$ 109,637	$ 110,748
Trade accounts receivable	31,039	37,940
Accounts receivable from affiliates	4,476	6,638
Inventories	71,246	71,488
Federal income tax receivable	15,098	15,687
Prepaid insurance	11,840	1,999
Other current assets	12,918	15,907
Total current assets	256,254	260,407
Property, plant and equipment, net	219,772	217,952
Intangibles, net	27,328	28,055
Investments in unconsolidated subsidiaries	13,945	14,927
Operating lease right-of-use assets	6,221	6,419
Other non-current assets	38,604	40,312
Total assets	562,124	568,072
LIABILITIES AND EQUITY
Accounts payable	10,610	11,952
Accounts payable to affiliates	868	1,362
Current maturities of long-term debt	2,943	3,649
Asset retirement obligations	2,497	1,746
Accrued payroll	7,922	18,105
Deferred revenue	2,044	833
Other current liabilities	7,128	6,623
Total current liabilities	34,012	44,270
Long-term debt	17,434	16,019
Operating lease liabilities	7,278	7,528
Asset retirement obligations	46,418	44,256
Pension and other postretirement obligations	4,778	5,082
Deferred income taxes	3,701	6,122
Liability for uncertain tax positions	9,004	9,329
Other long-term liabilities	7,813	8,500
Total liabilities	130,438	141,106
Common stock:
Capital in excess of par value	24,109	23,706
Retained earnings	409,059	404,924
Accumulated other comprehensive loss	(8,992)	(9,013)
Total stockholders' equity	431,686	426,966
Total liabilities and equity	562,124	568,072
Class A Common Stock
Common stock:
Common stock	5,944	5,783
Class B Common Stock
Common stock:
Common stock	$ 1,566	$ 1,566

XML

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)	Mar. 31, 2023 $ / shares shares	Dec. 31, 2022 $ / shares shares
Class A Common Stock
Common stock, par value (in dollars per share) | $ / shares	$ 1	$ 1
Common stock, shares outstanding (in shares) | shares	5,944,585	5,782,944
Class B Common Stock
Common stock, par value (in dollars per share) | $ / shares	$ 1	$ 1
Common stock, shares outstanding (in shares) | shares	1,565,929	1,566,129
Common stock, convertible conversion ratio	1	1

XML

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income Statement [Abstract]
Revenues	$ 50,141	$ 55,023
Cost of sales	46,784	39,176
Gross profit	3,357	15,847
Earnings of unconsolidated operations	13,824	14,592
Operating expenses
Selling, general and administrative expenses	14,876	14,784
Amortization of intangible assets	727	847
Gain on sale of assets	(236)	(136)
Operating expenses	15,367	15,495
Operating profit	1,814	14,944
Other (income) expense
Interest expense	545	513
Interest income	(1,155)	(145)
Closed mine obligations	409	380
Gain on equity securities	(628)	(518)
Other, net	(1,725)	(230)
Other (income) expense	(2,554)	0
Income before income tax (benefit) provision	4,368	14,944
Income tax (benefit) provision	(1,324)	2,362
Net income	$ 5,692	$ 12,582
Earnings per share:
Basic earnings per share (in dollars per share)	$ 0.77	$ 1.73
Diluted earnings per share (in dollars per share)	$ 0.76	$ 1.72
Basic weighted average shares outstanding (in shares)	7,428	7,253
Diluted weighted average shares outstanding (in shares)	7,515	7,321

XML

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 5,692	$ 12,582
Reclassification of pension and postretirement adjustments into earnings, net of $6 and $35 tax benefit in the three months ended March 31, 2023 and March 31, 2022, respectively.	21	118
Total other comprehensive income	21	118
Comprehensive income	$ 5,713	$ 12,700

XML

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Reclassification of pension and postretirement adjustments into earnings, tax benefit	$ (6)	$ (35)

XML

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating activities
Net cash provided by (used for) operating activities	$ 6,254	$ (1,070)
Investing activities
Expenditures for property, plant and equipment and acquisition of mineral interests	(7,879)	(4,649)
Proceeds from the sale of property, plant and equipment	272	135
Proceeds from the sale of private company equity units	1,153	0
Other	(10)	(15)
Net cash used for investing activities	(6,464)	(4,529)
Financing activities
Additions to long-term debt	2,112	3,348
Reductions of long-term debt	(1,456)	(2,689)
Net additions to revolving credit agreements	0	2,000
Cash dividends paid	(1,557)	(1,445)
Net cash (used for) provided by financing activities	(901)	1,214
Cash and cash equivalents
Total decrease for the period	(1,111)	(4,385)
Balance at the beginning of the period	110,748	86,005
Balance at the end of the period	$ 109,637	$ 81,620

XML

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance, beginning of period at Dec. 31, 2021	$ 352,116	$ 5,616	$ 1,567	$ 16,331	$ 336,778	$ (8,176)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	1,123	145		978
Conversion of Class B to Class A shares	0	1	(1)
Net income	12,582				12,582
Cash dividends on Class A and Class B common stock	(1,445)				(1,445)
Reclassification adjustment to net income, net of tax	118					118
Balance, end of period at Mar. 31, 2022	364,494	5,762	1,566	17,309	347,915	(8,058)
Balance, beginning of period at Dec. 31, 2022	426,966	5,783	1,566	23,706	404,924	(9,013)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	564	161		403
Net income	5,692				5,692
Cash dividends on Class A and Class B common stock	(1,557)				(1,557)
Reclassification adjustment to net income, net of tax	21					21
Balance, end of period at Mar. 31, 2023	$ 431,686	$ 5,944	$ 1,566	$ 24,109	$ 409,059	$ (8,992)

XML

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Stockholders' Equity [Abstract]
Cash dividends on common stock (in dollars per share)	$ 0.2075	$ 0.1975

XML

Nature of Operations and Basis of Presentation

3 Months Ended

Mar. 31, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Nature of Operations and Basis of Presentation

Nature of Operations and Basis of Presentation

The accompanying Unaudited Condensed Consolidated Financial Statements include the accounts of NACCO Industries, Inc.® (“NACCO”) and its wholly owned subsidiaries (collectively, the “Company”). NACCO brings natural resources to life by delivering aggregates, minerals, reliable fuels and environmental solutions through its robust portfolio of NACCO Natural Resources businesses. The Company operates under three business segments: Coal Mining, North American Mining ("NAMining") and Minerals Management. The Coal Mining segment operates surface coal mines for power generation companies. The NAMining segment is a trusted mining partner for producers of aggregates, activated carbon, lithium and other industrial minerals. The Minerals Management segment, which includes the Catapult Mineral Partners ("Catapult") business, acquires and promotes the development of mineral interests. Mitigation Resources of North America® ("Mitigation Resources") provides stream and wetland mitigation solutions.

The Company also has items not directly attributable to a reportable segment. Intercompany accounts and transactions are eliminated in consolidation.

The Company’s operating segments are further described below:

Coal Mining Segment

The Coal Mining segment, operating as The North American Coal Corporation® ("NACoal"), operates surface coal mines under long-term contracts with power generation companies pursuant to a service-based business model. Coal is surface mined in North Dakota, Texas and Mississippi. Each mine is fully integrated with its customer's operations.

During the three months ended March 31, 2023, the Coal Mining segment's operating coal mines were: The Coteau Properties Company (“Coteau”), Coyote Creek Mining Company, LLC (“Coyote Creek”), The Falkirk Mining Company (“Falkirk”), Mississippi Lignite Mining Company (“MLMC”) and The Sabine Mining Company (“Sabine”).

Sabine operates the Sabine Mine in Texas. All production from Sabine is delivered to Southwestern Electric Power Company's (“SWEPCO”) Henry W. Pirkey Plant (the “Pirkey Plant”). SWEPCO is an American Electric Power (“AEP”) company. As a result of the early retirement of the Pirkey Plant, Sabine ceased deliveries in March 2023 and final reclamation began on April 1, 2023. Funding for mine reclamation is the responsibility of SWEPCO, and Sabine will receive compensation for providing mine reclamation services.

The United States Environmental Protection Agency (the “EPA”) has a comprehensive regulatory program to manage the disposal of coal combustion residuals (“CCR”) from coal-fired power plants as non-hazardous material under the Resource Conservation and Recovery Act (“RCRA”). Individual states administer some or all of the provisions of RCRA. The North Dakota Department of Environmental Quality approved Falkirk’s customer's plan for an alternate disposal liner to store coal ash at the Coal Creek Station power plant. In the first quarter of 2023, the EPA proposed to deny the application. If denied, a new liner or new waste management unit(s) may need to be installed which could result in the temporary suspension of operations at Coal Creek Station. Falkirk is the sole supplier of lignite to Coal Creek Station. Any suspension of operations at Coal Creek Station would eliminate the need for lignite coal during the suspension period. Any such suspension of operations at Coal Creek Station or any of the power plants supplied by the Company's mines could have a material adverse effect on the Company’s business, financial condition and results of operations. See page 18 for further information on the Resource Conservation and Recovery Act.

MLMC is the exclusive supplier of lignite to the Red Hills Power Plant in Ackerman, Mississippi. Choctaw Generation Limited Partnership ("CGLP") leases the Red Hills Power Plant from a Southern Company subsidiary pursuant to a leveraged lease arrangement. CGLP's ability to make required payments to the Southern Company subsidiary is dependent on the operational performance of the Red Hills Power Plant. During 2022, Southern Company disclosed that it provided notice to the lessee, CGLP, to terminate the related operating and maintenance agreement effective June 30, 2023. Subsequently, CGLP failed to make the semi-annual lease payment due in December 2022 and as a result, the Southern Company subsidiary was unable to make its corresponding payment to the debtholders. The parties to the lease have entered into a forbearance agreement which suspends the related contractual rights of the parties while they continue restructuring negotiations, which could result in rescission of the termination notice. The ultimate outcome of this matter cannot be determined at this time but could have a material impact on the Company's financial statements if the operating and maintenance agreement is terminated.

At all operating coal mines other than MLMC, the Company is paid a management fee per ton of coal or heating unit (MMBtu) delivered. Each contract specifies the indices and mechanics by which fees change over time, generally in line with broad measures of U.S. inflation. The customers are responsible for funding all mine operating costs, including final mine reclamation, and directly or indirectly provide all of the capital required to build and operate the mine. This contract structure eliminates exposure to spot coal market price fluctuations while providing income and cash flow with minimal capital investment. Other than at Coyote Creek, debt financing provided by or supported by the customers is without recourse to NACCO and NACoal. See Note 6 for further discussion of Coyote Creek's guarantees.

All operating coal mines other than MLMC meet the definition of a variable interest entity ("VIE"). In each case, NACCO is not the primary beneficiary of the VIE as it does not exercise financial control; therefore, NACCO does not consolidate the results of these operations within its financial statements. Instead, these contracts are accounted for as equity method investments. The income before income taxes associated with these VIEs is reported as Earnings of unconsolidated operations on the Unaudited Condensed Consolidated Statements of Operations and the Company’s investment is reported on the line Investments in unconsolidated subsidiaries in the Unaudited Condensed Consolidated Balance Sheets. The mines that meet the definition of a VIE are referred to collectively as the “Unconsolidated Subsidiaries.” For tax purposes, the Unconsolidated Subsidiaries are included within the NACCO consolidated U.S. tax return; therefore, the Income tax (benefit) provision line on the Unaudited Condensed Consolidated Statements of Operations includes income taxes related to these entities. See Note 6 for further information on the Unconsolidated Subsidiaries.

The Company performs contemporaneous reclamation activities at each mine in the normal course of operations. Under all of the Unconsolidated Subsidiaries’ contracts, the customer has the obligation to fund final mine reclamation activities. Under certain contracts, the Unconsolidated Subsidiary holds the mine permit and is therefore responsible for final mine reclamation activities. To the extent the Unconsolidated Subsidiary performs such final reclamation, it is compensated for providing those services in addition to receiving reimbursement from customers for costs incurred.

The MLMC contract is the only operating coal contract in which the Company is responsible for all operating costs, capital requirements and final mine reclamation; therefore, MLMC is consolidated within NACCO’s financial statements. MLMC sells coal to its customer at a contractually agreed-upon price which adjusts monthly, primarily based on changes in the level of established indices which reflect general U.S. inflation rates. Profitability at MLMC is affected by customer demand for coal and changes in the indices that determine sales price and actual costs incurred. As diesel fuel is heavily weighted among the indices used to determine the coal sales price, fluctuations in diesel fuel prices can result in significant fluctuations in earnings at MLMC.

NAMining Segment

The NAMining segment provides value-added contract mining and other services for producers of industrial minerals. The segment is a platform for the Company’s growth and diversification of mining activities outside of the thermal coal industry. NAMining provides contract mining services for independently owned mines and quarries, creating value for its customers by performing the mining aspects of its customers’ operations. This allows customers to focus on their areas of expertise: materials handling and processing, product sales and distribution. As of March 31, 2023, NAMining operates mines in Florida, Texas, Arkansas, Indiana, Virginia and Nebraska and will serve as exclusive contract miner for the Thacker Pass lithium project in northern Nevada.

Certain of the entities within the NAMining segment are VIEs and are accounted for under the equity method as Unconsolidated Subsidiaries. See Note 6 for further discussion.

Minerals Management Segment

The Minerals Management segment derives income primarily by leasing its royalty and mineral interests to third-party exploration and production companies, and, to a lesser extent, other mining companies, granting them the rights to explore, develop, mine, produce, market and sell gas, oil, and coal in exchange for royalty payments based on the lessees' sales of those minerals.

The Minerals Management segment owns royalty interests, mineral interests, non-participating royalty interests and overriding royalty interests.

•Royalty Interest. Royalty interests generally result when the owner of a mineral interest leases the underlying minerals to an exploration and production company pursuant to an oil and gas lease. Typically, the resulting royalty interest is a cost-free percentage of production revenues for minerals extracted from the acreage. A holder of royalty interests is generally not responsible for capital expenditures or lease operating expenses, but royalty interests may be calculated

net of post-production expenses, and typically has no environmental liability. Royalty interests leased to producers expire upon the expiration of the oil and gas lease and revert to the mineral owner.

•Mineral Interest. Mineral interests are perpetual rights of the owner to explore, develop, exploit, mine and/or produce any or all of the minerals lying below the surface of the property. The holder of a mineral interest has the right to lease the minerals to an exploration and production company. Upon the execution of an oil and gas lease, the lessee (the exploration and production company) becomes the working interest owner and the lessor (the mineral interest owner) has a royalty interest.

•Non-Participating Royalty Interest (“NPRIs”). NPRI is an interest in oil and gas production which is created from the mineral estate. The NPRI is expense-free, bearing no operational costs of production. The term “non-participating” indicates that the interest owner does not share in the bonus, rentals from a lease, nor the right to participate in the execution of oil and gas leases. The NPRI owner does, however, typically receive royalty payments.

•Overriding Royalty Interest (“ORRIs”). ORRIs are created by carving out the right to receive royalties from a working interest. Like royalty interests, ORRIs do not confer an obligation to make capital expenditures or pay for lease operating expenses and have limited environmental liability; however, ORRIs may be calculated net of post-production expenses, depending on how the ORRI is structured. ORRIs that are carved out of working interests are linked to the same underlying oil and gas lease that created the working interest, and therefore, such ORRIs are typically subject to expiration upon the expiration or termination of the oil and gas lease.

The Company may own more than one type of mineral and royalty interest in the same tract of land. For example, where the Company owns an ORRI in a lease on the same tract of land in which it owns a mineral interest, the ORRI in that tract will relate to the same gross acres as the mineral interest in that tract.

The Minerals Management segment will benefit from the continued development of its mineral properties without the need for investment of additional capital once mineral and royalty interests have been acquired. The Minerals Management segment does not currently have any material investments under which it would be required to bear the cost of exploration, production or development.

The Company also manages legacy royalty and mineral interests located in Ohio (Utica and Marcellus shale natural gas), Louisiana (Haynesville shale and Cotton Valley formation natural gas), Texas (Cotton Valley and Austin Chalk formation natural gas), Mississippi (coal), Pennsylvania (coal, coalbed methane and Marcellus shale natural gas), Alabama (coal, coalbed methane and natural gas) and North Dakota (coal, oil and natural gas). The majority of the Company’s legacy reserves were acquired as part of its historical coal mining operations.

Other Items: On December 1, 2022, the Company transferred its ownership interest in Midwest AgEnergy, LLC to HLCP Ethanol Holdco, LLC (“HLCP”). The Company received a payment of $1.2 million in the first quarter of 2023 in connection with a post-closing purchase price adjustment, which is included on the line "Other, net" within the accompanying Unaudited Consolidated Statements of Operations.

The HLCP acquisition agreement includes two contingent earn-out arrangements under which additional payments are possible. The first earn-out is based on the achievement of EBITDA targets through December 31, 2024. The second earn-out is based on the development of a carbon dioxide pipeline that will support a carbon dioxide sequestration project over a four-year period commencing on the transaction closing date. Additional payments to NACCO could range from $0 to approximately $12.9 million based on achievement of the two earn-outs as well as payment of amounts held in escrow to address potential indemnity claims during the 12-month period following the transaction date. Any future payments associated with the earn-outs or amounts held in escrow will be recognized when realized, consistent with the accounting for gain contingencies.

During the first quarter of 2023, the Company’s wholly-owned subsidiary, Caddo Creek Resources Company (“Caddo Creek”), acquired 100% of the membership interests in the Marshall Mine located outside of Marshall, Texas from Advanced Emissions Solutions (“ADES”). Prior to the acquisition, Caddo Creek was performing mine reclamation under a fixed price contract with ADES. The Company received $2.2 million of cash, assumed the asset retirement obligation estimated to be approximately $1.9 million and recognized a gain of approximately $0.3 million.

Basis of Presentation: These financial statements have been prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair

presentation of the financial position of the Company at March 31, 2023, the results of its operations, comprehensive income, cash flows and changes in equity for the three months ended March 31, 2023 and 2022 have been included. These Unaudited Condensed Consolidated Financial Statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2022.

The balance sheet at December 31, 2022 has been derived from the audited financial statements at that date but does not include all of the information or notes required by U.S. GAAP for complete financial statements.

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Revenue Recognition

3 Months Ended

Mar. 31, 2023

Revenue from Contract with Customer [Abstract]

Revenue Recognition

Revenue Recognition

Nature of Performance Obligations

At contract inception, the Company assesses the goods and services promised in its contracts with customers and identifies a performance obligation for each promised good or service that is distinct. To identify the performance obligations, the Company considers all of the goods or services promised in the contract regardless of whether they are explicitly stated or are implied by customary business practices.

Each mine has a contract with its respective customer that represents a contract under ASC 606. For its consolidated entities, the Company’s performance obligations vary by contract and consist of the following:

At MLMC, each MMBtu delivered during the production period is considered a separate performance obligation. Revenue is recognized at the point in time that control of each MMBtu of lignite transfers to the customer. Fluctuations in revenue from period to period generally result from changes in customer demand.

At NAMining, the management service is primarily to oversee the operation of the equipment, and delivery of aggregates or other minerals is the performance obligation accounted for as a series. Performance momentarily creates an asset that the customer simultaneously receives and consumes; therefore, control is transferred to the customer over time. Consistent with the conclusion that the customer simultaneously receives and consumes the benefits provided, an input-based measure of progress is appropriate. As each month of service is completed, revenue is recognized for the amount of actual costs incurred, plus the management fee or fixed fee and the general and administrative fee (as applicable). Fluctuations in revenue from period to period result from changes in customer demand primarily due to increases and decreases in activity levels on individual contracts and variances in reimbursable costs.

The Minerals Management segment enters into contracts which grant third-party lessees the right to explore, develop, produce and sell minerals controlled by the Company. These arrangements result in the transfer of mineral rights for a period of time; however, no rights to the actual land are granted other than access for purposes of exploration, development, production and sales. The mineral rights revert back to the Company at the expiration of the contract.

Under these contracts, granting exclusive right, title, and interest in and to minerals is the performance obligation. The performance obligation under these contracts represents a series of distinct goods or services whereby each day of access that is provided is distinct. The transaction price consists of a variable sales-based royalty and, in certain arrangements, a fixed component in the form of an up-front lease bonus payment. As the amount of consideration the Company will ultimately be entitled to is entirely susceptible to factors outside its control, the entire amount of variable consideration is constrained at contract inception. The Company believes that the provisions of royalty contracts are customary in the industry. Up-front lease bonus payments represent the fixed portion of the transaction price and are recognized over the primary term of the contract, which is generally three to five years.

Mitigation Resources generates and sells stream and wetland mitigation credits (known as mitigation banking) and provides services to those engaged in permittee-responsible stream and wetland mitigation. Each mitigation credit sale is considered a separate performance obligation. Revenue is recognized at the point in time that control of each mitigation credit transfers to the customer. Fluctuations in revenue from period to period generally result from changes in customer demand. Under the permittee-responsible stream and wetland mitigation model, the contracts are generally structured as a management fee agreement under which Mitigation Resources is reimbursed for all costs incurred in performing the required mitigation plus an agreed profit percentage or a fixed fee. The mitigation services provided is the performance obligation and is accounted for as a series. Performance momentarily creates an asset that the customer simultaneously receives and consumes; therefore, control is transferred to the customer as work is completed. Consistent with the conclusion that the customer simultaneously receives and consumes the benefits provided, an input-based measure of progress is appropriate. As each month of service is completed, revenue is recognized for the amount of actual costs incurred, plus the management fee or fixed fee. Fluctuations in revenue

from period to period result from changes in customer demand primarily due to increases and decreases in activity levels of individual contracts and variances in reimbursable costs.

Significant Judgments

The Company’s contracts with its customers contain different types of variable consideration including, but not limited to, management fees that adjust based on volumes or MMBtu delivered, however, the terms of these variable payments relate specifically to the Company's efforts to satisfy one or more, but not all of, the performance obligations (or to a specific outcome from satisfying the performance obligations) in the contract. Therefore, the Company allocates each variable payment (and subsequent changes to that payment) entirely to the specific performance obligation to which it relates. Management fees, as well as general and administrative fees, are also adjusted based on changes in specified indices (e.g., CPI) to compensate for general inflation changes. Index adjustments, if applicable, are effective prospectively.

Cost Reimbursement

Certain contracts include reimbursement from customers of actual costs incurred for the purchase of supplies, equipment and services in accordance with contractual terms. Such reimbursable revenue is variable and subject to uncertainty, as the amounts received and timing thereof is highly dependent on factors outside of the Company’s control. Accordingly, reimbursable revenue is fully constrained and not recognized until the uncertainty is resolved, which typically occurs when the related costs are incurred on behalf of a customer. The Company is considered a principal in such transactions and records the associated revenue at the gross amount billed to the customer with the related costs recorded as an expense within cost of sales.

Prior Period Performance Obligations

The Company records royalty income in the month production is delivered to the purchaser. As a non-operator, the Company has limited visibility into when new wells start producing and production statements may not be received for 30 to 90 days or more after the date production is delivered. As a result, the Company is required to estimate the amount of production delivered to the purchaser of the product and the price that will be received for the sale of the product. The expected sales volumes and prices for these properties are estimated and recorded in "Trade accounts receivable" in the accompanying Unaudited Condensed Consolidated Balance Sheets. The difference between the Company’s estimates and the actual amounts received is recorded in the month that payment is received from the third-party lessee. For the three months ended March 31, 2023, royalty income recognized in the reporting period related to performance obligations satisfied in prior reporting periods was immaterial. For the three months ended March 31, 2022, royalty income of $2.1 million was recognized for a settlement related to the Company’s ownership interest in certain mineral rights.

Disaggregation of Revenue

In accordance with ASC 606-10-50, the Company disaggregates revenue from contracts with customers into major goods and service lines and timing of transfer of goods and services. The Company determined that disaggregating revenue into these categories achieves the disclosure objective of depicting how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. The Company’s business consists of the Coal Mining, NAMining and Minerals Management segments as well as Unallocated Items. See Note 8 to the Unaudited Condensed Consolidated Financial Statements for further discussion of segment reporting.

	THREE MONTHS ENDED
	MARCH 31
	2023		2022
Timing of Revenue Recognition
Goods transferred at a point in time	$	20,146	$	20,373
Services transferred over time	29,995		34,650
Total revenues	$	50,141	$	55,023

Contract Balances

The opening and closing balances of the Company’s current and long-term accounts receivable, contract assets and contract liabilities are as follows:

	Contract balances
	Trade accounts receivable		Contract asset (current)		Contract asset (long-term)		Contract liability (current)		Contract liability (long-term)
Balance, January 1, 2023	$	37,940	$	409	$	5,985	$	833	$	1,709
Balance, March 31, 2023	31,039		—		3,555		2,044		827
Increase (decrease)	$	(6,901)	$	(409)	$	(2,430)	$	1,211	$	(882)

As described above, the Company enters into royalty contracts that grant exclusive right, title, and interest in and to minerals. The transaction price consists of a variable sales-based royalty and, in certain arrangements, a fixed component in the form of an up-front lease bonus payment. The timing of the payment of the fixed portion of the transaction price is upfront, however, the performance obligation is satisfied over the primary term of the contract, which is generally three to five years. Therefore, at the time any such up-front payment is received, a contract liability is recorded which represents deferred revenue. The amount of royalty revenue recognized in both of the three months ended March 31, 2023 and 2022 that was included in the opening contract liability was $0.2 million. This revenue consists of up-front lease bonus payments received under royalty contracts that are recognized over the primary term of the royalty contracts, which are generally three to five years.

The Company expects to recognize an additional $1.9 million in the remainder of 2023, $0.6 million in 2024, $0.3 million in 2025 and $0.1 million in 2026 and 2027 related to the contract liability remaining at March 31, 2023. The difference between the opening and closing balances of the Company’s contract balances results from the timing difference between the Company’s performance and the customer’s payment.

The Company has no contract assets recognized from the costs to obtain or fulfill a contract with a customer.

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Inventories

3 Months Ended

Mar. 31, 2023

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories are summarized as follows:

	MARCH 31 2023		DECEMBER 31 2022
Coal	$	26,229	$	27,927
Mining supplies	45,017		43,561
Total inventories	$	71,246	$	71,488

During the first quarter of 2023, the Company recorded a $2.4 million inventory impairment charge in the line “Cost of sales” in the accompanying Unaudited Consolidated Statements of Operations as mining costs exceeded net realizable value at MLMC.

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Stockholders' Equity

3 Months Ended

Mar. 31, 2023

Equity [Abstract]

Stockholders' Equity

Stockholders' Equity

Stock Repurchase Program: On November 10, 2021, the Company's Board of Directors approved a stock repurchase program ("2021 Stock Repurchase Program") providing for the purchase of up to $20.0 million of the Company’s outstanding Class A common stock through December 31, 2023.

The timing and amount of any repurchases under the 2021 Stock Repurchase Program are determined at the discretion of the Company's management based on a number of factors, including the availability of capital, other capital allocation alternatives, market conditions for the Company's Class A Common Stock and other legal and contractual restrictions. The 2021 Stock Repurchase Program does not require the Company to acquire any specific number of shares and may be modified, suspended, extended or terminated by the Company without prior notice and may be executed through open market purchases, privately negotiated transactions or otherwise. All or part of the repurchases under the 2021 Stock Repurchase Program may be implemented under a Rule 10b5-1 trading plan, which would allow repurchases under pre-set terms at times when the Company might otherwise be restricted from doing so under applicable securities laws. The Company has not repurchased any shares of common stock under the 2021 Stock Repurchase Program through March 31, 2023.

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Fair Value Disclosure

3 Months Ended

Mar. 31, 2023

Fair Value Disclosures [Abstract]

Fair Value Disclosure

NOTE 5—Fair Value Disclosure

Recurring Fair Value Measurements: The following table presents the Company's assets and liabilities accounted for at fair value on a recurring basis:

			Fair Value Measurements at Reporting Date Using
			Quoted Prices in				Significant
			Active Markets for		Significant Other		Unobservable
			Identical Assets		Observable Inputs		Inputs
Description	Date		(Level 1)		(Level 2)		(Level 3)
	March 31, 2023
Assets:
Equity securities	$	16,172	$	16,172	$	—	$	—
	$	16,172	$	16,172	$	—	$	—
	December 31, 2022
Assets:
Equity securities	$	15,534	$	15,534	$	—	$	—
	$	15,534	$	15,534	$	—	$	—

Bellaire Corporation (“Bellaire”) is a non-operating subsidiary of the Company with legacy liabilities relating to closed mining operations, primarily former Eastern U.S. underground coal mining operations. Prior to 2022, Bellaire contributed $5.0 million to establish a mine water treatment trust (the "Mine Water Treatment Trust") to assure the long-term treatment of post-mining discharge. Bellaire's Mine Water Treatment Trust invests in equity securities that are reported at fair value based upon quoted market prices in active markets for identical assets; therefore, they are classified as Level 1 within the fair value hierarchy. The Company recognized a gain of $0.6 million and a loss of $0.7 million during the three months ended March 31, 2023 and 2022, respectively, related to the Mine Water Treatment Trust.

Prior to 2022, the Company invested $2.0 million in equity securities of a public company with a diversified portfolio of royalty producing mineral interests. The investment is reported at fair value based upon quoted market prices in active markets for identical assets; therefore, it is classified as Level 1 within the fair value hierarchy. The Company recognized a gain of $0.1 million and $1.2 million during the three months ended March 31, 2023 and 2022, respectively, related to the investment in these equity securities.

The change in fair value of equity securities is reported on the line Gain on equity securities in the Other (income) expense section of the Unaudited Condensed Consolidated Statements of Operations.

There were no transfers into or out of Levels 1, 2 or 3 during the three months ended March 31, 2023 and 2022.

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Unconsolidated Subsidiaries

3 Months Ended

Mar. 31, 2023

Equity Method Investments and Joint Ventures [Abstract]

Unconsolidated Subsidiaries

Unconsolidated Subsidiaries

Each of the Company's wholly owned Unconsolidated Subsidiaries, within the Coal Mining and NAMining segments, meet the definition of a VIE. The Unconsolidated Subsidiaries are capitalized primarily with debt financing provided by or supported by their respective customers, and generally without recourse to NACCO and NACoal. Although the Company owns 100% of the equity and manages the daily operations of the Unconsolidated Subsidiaries, the Company has determined that the equity capital provided by the Company is not sufficient to adequately finance the ongoing activities or absorb any expected losses without additional support from the customers. The customers have a controlling financial interest and have the power to direct the activities that most significantly affect the economic performance of the entities. As a result, the Company is not the primary beneficiary and therefore does not consolidate these entities' financial positions or results of operations. See Note 1 for a discussion of these entities.

The Investment in the unconsolidated subsidiaries and related tax positions totaled $13.9 million and $14.9 million at March 31, 2023 and December 31, 2022, respectively. The Company's maximum risk of loss relating to these entities is limited to its invested capital, which was $4.5 million and $7.1 million at March 31, 2023 and December 31, 2022, respectively. Earnings of

unconsolidated operations were $13.8 million and $14.6 million during the three months ended March 31, 2023 and 2022, respectively.

NACoal is a party to certain guarantees related to Coyote Creek. Under certain circumstances of default or termination of Coyote Creek’s Lignite Sales Agreement (“LSA”), NACoal would be obligated for payment of a "make-whole" amount to Coyote Creek’s third-party lenders. The “make-whole” amount is based on the excess, if any, of the discounted value of the remaining scheduled debt payments over the principal amount. In addition, in the event Coyote Creek’s LSA is terminated on or after January 1, 2024 by Coyote Creek’s customers, NACoal is obligated to purchase Coyote Creek’s dragline and rolling stock for the then net book value of those assets. To date, no payments have been required from NACoal since the inception of these guarantees. The Company believes that the likelihood NACoal would be required to perform under the guarantees is remote, and no amounts related to these guarantees have been recorded.

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Contingencies

3 Months Ended

Mar. 31, 2023

Commitments and Contingencies Disclosure [Abstract]

Contingencies

Contingencies

Various legal and regulatory proceedings and claims have been or may be asserted against NACCO and certain subsidiaries relating to the conduct of their businesses. These proceedings and claims are incidental to the ordinary course of business of the Company. Management believes that it has meritorious defenses and will vigorously defend the Company in these actions. Any costs that management estimates will be paid as a result of these claims are accrued when the liability is considered probable and the amount can be reasonably estimated.  If a range of amounts can be reasonably estimated and no amount within the range is a better estimate than any other amount, then the minimum of the range is accrued. The Company does not accrue liabilities when the likelihood that the liability has been incurred is probable but the amount cannot be reasonably estimated or when the liability is believed to be only reasonably possible or remote. For contingencies where an unfavorable outcome is probable or reasonably possible and which are material, the Company discloses the nature of the contingency and, in some circumstances, an estimate of the possible loss. 

These matters are subject to inherent uncertainties, and unfavorable rulings could occur. If an unfavorable ruling were to occur, there exists the possibility of an adverse impact on the Company’s financial position, results of operations and cash flows of the period in which the ruling occurs, or in future periods.

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Business Segments

3 Months Ended

Mar. 31, 2023

Segment Reporting [Abstract]

Business Segments

Business Segments

The Company’s operating segments are: (i) Coal Mining, (ii) NAMining and (iii) Minerals Management. The Company determines its reportable segments by first identifying its operating segments, and then by assessing whether any components of these segments constitute a business for which discrete financial information is available and where segment management regularly reviews the operating results of that component. The Company’s Chief Operating Decision Maker utilizes operating profit to evaluate segment performance and allocate resources.

The Company has items not directly attributable to a reportable segment that are not included as part of the measurement of segment operating profit, which include primarily administrative costs related to public company reporting requirements at the parent company and the financial results of Mitigation Resources and Bellaire. Mitigation Resources generates and sells stream and wetland mitigation credits (known as mitigation banking) and provides services to those engaged in permittee-responsible stream and wetland mitigation. Bellaire manages the Company’s long-term liabilities related to former Eastern U.S. underground mining activities.

All financial statement line items below operating profit (other income including interest expense and interest income, the provision for income taxes and net income) are presented and discussed within this Form 10-Q on a consolidated basis.

The following tables present revenue, operating profit, capital expenditures and depreciation expense:

	THREE MONTHS ENDED
	MARCH 31
	2023		2022
Revenues
Coal Mining	$	20,653	$	20,962
NAMining	20,633		21,404
Minerals Management	8,285		12,754
Unallocated Items	1,191		192
Eliminations	(621)		(289)
Total	$	50,141	$	55,023
Operating profit (loss)
Coal Mining	$	313	$	7,352
NAMining	830		1,271
Minerals Management	6,044		11,628
Unallocated Items	(5,353)		(5,439)
Eliminations	(20)		132
Total	$	1,814	$	14,944

Expenditures for property, plant and equipment and acquisition of mineral interests
Coal Mining	$	2,686	$	1,720
NAMining	4,423		1,820
Minerals Management	344		833
Unallocated Items	426		276
Total	$	7,879	$	4,649
Depreciation, depletion and amortization
Coal Mining	$	4,240	$	4,038
NAMining	1,886		1,467
Minerals Management	811		578
Unallocated Items	82		44
Total	$	7,019	$	6,127

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Nature of Operations and Basis of Presentation (Policies)

3 Months Ended

Mar. 31, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation: These financial statements have been prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair

presentation of the financial position of the Company at March 31, 2023, the results of its operations, comprehensive income, cash flows and changes in equity for the three months ended March 31, 2023 and 2022 have been included. These Unaudited Condensed Consolidated Financial Statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2022.

The balance sheet at December 31, 2022 has been derived from the audited financial statements at that date but does not include all of the information or notes required by U.S. GAAP for complete financial statements.

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Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2023

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

	THREE MONTHS ENDED
	MARCH 31
	2023		2022
Timing of Revenue Recognition
Goods transferred at a point in time	$	20,146	$	20,373
Services transferred over time	29,995		34,650
Total revenues	$	50,141	$	55,023

Contract Balances

The opening and closing balances of the Company’s current and long-term accounts receivable, contract assets and contract liabilities are as follows:

	Contract balances
	Trade accounts receivable		Contract asset (current)		Contract asset (long-term)		Contract liability (current)		Contract liability (long-term)
Balance, January 1, 2023	$	37,940	$	409	$	5,985	$	833	$	1,709
Balance, March 31, 2023	31,039		—		3,555		2,044		827
Increase (decrease)	$	(6,901)	$	(409)	$	(2,430)	$	1,211	$	(882)

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Inventories (Tables)

3 Months Ended

Mar. 31, 2023

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories are summarized as follows:

	MARCH 31 2023		DECEMBER 31 2022
Coal	$	26,229	$	27,927
Mining supplies	45,017		43,561
Total inventories	$	71,246	$	71,488

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Fair Value Disclosure (Tables)

3 Months Ended

Mar. 31, 2023

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table presents the Company's assets and liabilities accounted for at fair value on a recurring basis:

			Fair Value Measurements at Reporting Date Using
			Quoted Prices in				Significant
			Active Markets for		Significant Other		Unobservable
			Identical Assets		Observable Inputs		Inputs
Description	Date		(Level 1)		(Level 2)		(Level 3)
	March 31, 2023
Assets:
Equity securities	$	16,172	$	16,172	$	—	$	—
	$	16,172	$	16,172	$	—	$	—
	December 31, 2022
Assets:
Equity securities	$	15,534	$	15,534	$	—	$	—
	$	15,534	$	15,534	$	—	$	—

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Business Segments (Tables)

3 Months Ended

Mar. 31, 2023

Segment Reporting [Abstract]

Segment Reporting Information

The following tables present revenue, operating profit, capital expenditures and depreciation expense:

	THREE MONTHS ENDED
	MARCH 31
	2023		2022
Revenues
Coal Mining	$	20,653	$	20,962
NAMining	20,633		21,404
Minerals Management	8,285		12,754
Unallocated Items	1,191		192
Eliminations	(621)		(289)
Total	$	50,141	$	55,023
Operating profit (loss)
Coal Mining	$	313	$	7,352
NAMining	830		1,271
Minerals Management	6,044		11,628
Unallocated Items	(5,353)		(5,439)
Eliminations	(20)		132
Total	$	1,814	$	14,944

Expenditures for property, plant and equipment and acquisition of mineral interests
Coal Mining	$	2,686	$	1,720
NAMining	4,423		1,820
Minerals Management	344		833
Unallocated Items	426		276
Total	$	7,879	$	4,649
Depreciation, depletion and amortization
Coal Mining	$	4,240	$	4,038
NAMining	1,886		1,467
Minerals Management	811		578
Unallocated Items	82		44
Total	$	7,019	$	6,127

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Nature of Operations and Basis of Presentation (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) segment
Long-term Purchase Commitment [Line Items]
Number of operating segments | segment	3
Cash received	$ 2.2
Estimated asset retirement obligation	1.9
Gain on the assumption of third-party asset retirement obligation	$ 0.3
Caddo Creek
Long-term Purchase Commitment [Line Items]
Membership interest	100.00%
HLCP Ethanol Holdco, LLC
Long-term Purchase Commitment [Line Items]
Proceeds and associated gain from the post-closing purchase price adjustment, as a result of the sale of equity method investment	$ 1.2
Number of contingent earn-out arrangements | segment	2
Earn-out, project term	4 years
Minimum | HLCP Ethanol Holdco, LLC
Long-term Purchase Commitment [Line Items]
Earn-out payments	$ 0.0
Maximum | HLCP Ethanol Holdco, LLC
Long-term Purchase Commitment [Line Items]
Earn-out payments	$ 12.9

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Revenue Recognition (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Performance obligations satisfied in prior period, amount recognized	$ 0.0	$ 2.1
Revenue recognized in contract liability	0.2	$ 0.2
Contract assets recognized	$ 0.0
Minimum
Disaggregation of Revenue [Line Items]
Primary term of contract	3 years
Maximum
Disaggregation of Revenue [Line Items]
Primary term of contract	5 years

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Revenue Recognition (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Revenues	$ 50,141	$ 55,023
Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenues	20,146	20,373
Services transferred over time
Disaggregation of Revenue [Line Items]
Revenues	$ 29,995	$ 34,650

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Revenue Recognition (Contract Balances) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Trade accounts receivable
Balance, January 1, 2023	$ 409
Balance, March 31, 2023	0
Increase (decrease) in trade accounts receivable	(409)
Contract asset (current)
Increase (decrease) in contract asset (current)	(409)
Contract asset (long-term)
Balance, January 1, 2023	5,985
Balance, March 31, 2023	3,555
Increase (decrease) in contract asset (long-term)	(2,430)
Contract liability (current)
Balance, January 1, 2023	833
Balance, March 31, 2023	2,044
Increase (decrease) in contract liability (current)	1,211
Contract liability (long-term)
Balance, January 1, 2023	1,709
Balance, March 31, 2023	827
Increase (decrease) in contract liability (long-term)	(882)
Trade Accounts Receivable
Trade accounts receivable
Balance, January 1, 2023	37,940
Balance, March 31, 2023	31,039
Increase (decrease) in trade accounts receivable	(6,901)
Contract asset (current)
Increase (decrease) in contract asset (current)	$ (6,901)

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Revenue Recognition (Remaining Performance Obligations) (Details) $ in Millions	Mar. 31, 2023 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue expected to be recognized	$ 1.9
Expected timing of satisfaction	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue expected to be recognized	$ 0.6
Expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue expected to be recognized	$ 0.3
Expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue expected to be recognized	$ 0.1
Expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue expected to be recognized	$ 0.1
Expected timing of satisfaction	1 year

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Inventories (Summary of Inventory) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Inventory Disclosure [Abstract]
Coal	$ 26,229	$ 27,927
Mining supplies	45,017	43,561
Total inventories	$ 71,246	$ 71,488

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Inventories (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($)
Inventory Disclosure [Abstract]
Inventory impairment charge	$ 2.4

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Stockholders' Equity (Narrative) (Details) - 2021 Stock Repurchase Program - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Nov. 10, 2021
Class of Stock [Line Items]
Stock repurchase program, authorized amount		$ 20.0
Treasury stock, shares acquired (in shares)	0.0

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Fair Value Disclosure (Schedule of Assets and Liabilities) (Details) - Fair value measurements, recurring - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Equity securities	$ 16,172	$ 15,534
Total assets accounted for at fair value on a recurring basis	16,172	15,534
Significant Other Observable Inputs (Level 2)
Assets:
Equity securities	0	0
Total assets accounted for at fair value on a recurring basis	0	0
Significant Unobservable Inputs (Level 3)
Assets:
Equity securities	0	0
Total assets accounted for at fair value on a recurring basis	0	0
Estimate of Fair Value Measurement
Assets:
Equity securities	16,172	15,534
Total assets accounted for at fair value on a recurring basis	$ 16,172	$ 15,534

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Fair Value Disclosure (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gain (loss) on equity securities	$ 628	$ 518
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair value measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gain (loss) on equity securities	100	1,200
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair value measurements, recurring | Bellaire
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gain (loss) on equity securities	$ 600	$ (700)
Quoted Prices in Active Markets for Identical Assets (Level 1) | Reported Value Measurement | Fair value measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities cost			$ 2,000
Quoted Prices in Active Markets for Identical Assets (Level 1) | Reported Value Measurement | Fair value measurements, recurring | Bellaire
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities cost			$ 5,000

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Unconsolidated Subsidiaries (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Variable Interest Entity [Line Items]
Income from equity method investee	$ 13,945		$ 14,927
Variable interest entity, reporting entity involvement, maximum risk of loss	4,500		7,100
Earnings of unconsolidated operations	13,824	$ 14,592
Other noncurrent assets
Variable Interest Entity [Line Items]
Income from equity method investee	$ 13,900		$ 14,900

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Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Revenues	$ 50,141	$ 55,023
Operating profit (loss)	1,814	14,944
Expenditures for property, plant and equipment and acquisition of mineral interests	7,879	4,649
Depreciation, depletion and amortization	7,019	6,127
Operating segments | Coal Mining
Segment Reporting Information [Line Items]
Revenues	20,653	20,962
Operating profit (loss)	313	7,352
Expenditures for property, plant and equipment and acquisition of mineral interests	2,686	1,720
Depreciation, depletion and amortization	4,240	4,038
Operating segments | NAMining
Segment Reporting Information [Line Items]
Revenues	20,633	21,404
Operating profit (loss)	830	1,271
Expenditures for property, plant and equipment and acquisition of mineral interests	4,423	1,820
Depreciation, depletion and amortization	1,886	1,467
Operating segments | Minerals Management
Segment Reporting Information [Line Items]
Revenues	8,285	12,754
Operating profit (loss)	6,044	11,628
Expenditures for property, plant and equipment and acquisition of mineral interests	344	833
Depreciation, depletion and amortization	811	578
Unallocated Items
Segment Reporting Information [Line Items]
Revenues	1,191	192
Operating profit (loss)	(5,353)	(5,439)
Expenditures for property, plant and equipment and acquisition of mineral interests	426	276
Depreciation, depletion and amortization	82	44
Eliminations
Segment Reporting Information [Line Items]
Revenues	(621)	(289)
Operating profit (loss)	$ (20)	$ 132