Exhibit 99.1

	Contacts:	NEWS RELEASE James E. Braun, CFO Newpark Resources, Inc. 281-362-6800
FOR IMMEDIATE RELEASE		Ken Dennard, Managing Partner Dennard Rupp Gray & Easterly, LLC ksdennard@drg-e.com 713-529-6600

NEWPARK RESOURCES REPORTS NET INCOME OF $0.12 PER DILUTED SHARE FOR THE SECOND QUARTER 2010
Operating income up 45% from first quarter 2010

THE WOODLANDS, TX — July 29, 2010 — Newpark Resources, Inc. (NYSE: NR) today announced results for its second quarter ended June 30, 2010. Total revenues were $181.4 million for the second quarter of 2010 compared to $160.8 million for the first quarter of 2010 and $109.6 million for the second quarter of 2009. Net income for the second quarter of 2010 was $10.8 million, or $0.12 per diluted share, compared to net income for the first quarter of 2010 of $7.8 million, or $0.09 per diluted share, and a net loss for the second quarter of 2009 of $8.8 million, or a loss of $0.10 per share.

Paul Howes, President and Chief Executive Officer of Newpark, stated, “We continue to be pleased with the ongoing sequential improvement in all of our operating segments. Our domestic revenues rose 21% from the first quarter of 2010. This was driven by a 13% increase in U.S. drilling activity, along with our expansion in the Northeast U.S. region and continued growth in the Haynesville shale, due in part to the success of our new high performance water-based fluids. In addition, waste disposals and product sales associated with the Deepwater Horizon oil spill contributed $2.7 million of revenue to the second quarter. Our international revenues increased as our Mediterranean region rebounded nicely from the first quarter. Also, on a sequential basis, operating income improved by $6.2 million, or 45%, on a $20.6 million increase in revenues, reflecting a strong incremental margin of 30%.”

SEGMENT RESULTS

The Fluids Systems and Engineering segment generated revenues of $150.5 million in the second quarter of 2010 compared to $136.3 million in the first quarter of 2010 and $89.6 million in the second quarter of 2009. Segment operating income was $15.2 million in the second quarter of 2010 compared to $12.4 million in the first quarter of 2010 and an operating loss of $1.7 million in the second quarter of 2009. North American revenues increased 10% from the first quarter of 2010, which included an 18% improvement in the U.S., partially offset by the seasonal decline in Canada. Meanwhile, international revenues increased 11% from the first quarter of 2010, driven by a rebound in activity in North Africa and Europe. Compared to the second quarter of 2009, North American revenues increased 93%, while international revenues increased 26%.

The Mats and Integrated Services segment generated revenues of $17.0 million in the second quarter of 2010 compared to $13.6 million in the first quarter of 2010 and $8.6 million in the second quarter of 2009. Segment operating income was $5.0 million in the second quarter of 2010 compared to operating income of $2.7 million in the first quarter of 2010 and an operating loss of $4.8 million in the second quarter of 2009. Revenues were up 25% from the first quarter of 2010, driven by a $3.5 million increase in rental activity in the Northeast U.S. region. Compared to the second quarter of 2009, segment revenues were up 97%.

The Environmental Services segment generated revenues of $13.8 million in the second quarter of 2010 compared to $10.9 million in the first quarter of 2010 and $11.3 million in the second quarter of 2009. Segment operating income was $4.2 million in the second quarter of 2010, compared to operating income of $2.7 million in the first quarter of 2010 and $1.4 million in the second quarter of 2009. The second quarter of 2010 includes $2.0 million of revenue from waste disposals associated with the Deepwater Horizon oil spill.

CONFERENCE CALL

Newpark has scheduled a conference call to discuss the second quarter 2010 results, which will be broadcast live over the Internet, on Friday, July 30, 2010 at 10:00 a.m. Eastern Time / 9:00 a.m. Central Time. To participate in the call, dial 480-629-9692 and ask for the Newpark Resources conference call at least 10 minutes prior to the start time, or access it live over the Internet at www.newpark.com. For those who cannot listen to the live call, a replay will be available through August 6, 2010 and may be accessed by dialing (303) 590-3030 and using pass code 4313117#. Also, an archive of the webcast will be available shortly after the call at www.newpark.com for 90 days.

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Newpark Resources, Inc. is a worldwide provider of drilling fluids, temporary worksites and access roads for oilfield and other commercial markets, and environmental waste treatment solutions. For more information, visit our website at www.newpark.com.

This news release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act that are based on management’s current expectations, estimates and projections. All statements that address expectations or projections about the future, including Newpark’s strategy for growth, product development, market position, expected expenditures and financial results are forward-looking statements. Some of the forward-looking statements may be identified by words like “expects,” “anticipates,” “plans,” “intends,” “projects,” “indicates,” and similar expressions. These statements are not guarantees of future performance and involve a number of risks, uncertainties and assumptions. Many factors, including those discussed more fully elsewhere in this release and in documents filed with the Securities and Exchange Commission by Newpark, particularly its Annual Report on Form 10-K for the year ended December 31, 2009, as well as others, could cause results to differ materially from those stated. These risk factors include, but are not limited to, our customer concentration and cyclical nature of our industry, the availability of raw materials and skilled personnel, our market competition, the cost and continued availability of borrowed funds, our international operations, legal and regulatory matters, including environmental regulations, inherent limitations in insurance coverage, potential impairments of long-lived intangible assets, technological developments in our industry, the impact of severe weather, particularly in the U.S. Gulf Coast, and restrictions on offshore drilling activity in the Gulf of Mexico. Newpark’s filings with the Securities and Exchange Commission can be obtained at no charge at www.sec.gov, as well as through our website at www.newpark.com.

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Newpark Resources, Inc.

Consolidated Statements of Operations

	Three Months Ended
(Unaudited)	June 30,			March 31,			June 30,
(In thousands, except per share data)	2010			2010			2009
Revenues	$	181,352		$	160,798		$	109,599
Cost of revenues		145,299			133,518			103,906
Selling, general and administrative expenses		16,360			14,413			15,652
Other income, net		(203	)		(842	)		(37	)
Operating income (loss)		19,896			13,709			(9,922	)
Foreign currency exchange gain		(1,213	)		(611	)		(590	)
Interest expense		2,228			2,148			1,600
Income (loss) from operations before income taxes		18,881			12,172			(10,932	)
Provision for income taxes		8,041			4,390			(2,145	)
Net income (loss)	$	10,840		$	7,782		$	(8,787	)
Basic weighted average common shares outstanding		88,818			88,654			88,514
Diluted weighted average common shares outstanding		89,392			88,867			88,514
Income (loss) per common share — basic	$	0.12		$	0.09		$	(0.10	)
Income (loss) per common share — diluted	$	0.12		$	0.09		$	(0.10	)

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Newpark Resources, Inc.

Operating Segment Results

(Unaudited)	Three Months Ended
(In thousands)	June 30, 2010			March 31, 2010			June 30, 2009
Revenues
Fluids systems and engineering	$	150,534		$	136,310		$	89,642
Mats and integrated services		16,981			13,620			8,638
Environmental services		13,837			10,868			11,319
Total revenues	$	181,352		$	160,798		$	109,599
Operating income (loss)
Fluids systems and engineering	$	15,164		$	12,414		$	(1,722	)(2)
Mats and integrated services		5,036			2,714	(1)		(4,774	)(2)
Environmental services		4,224			2,679			1,385	(2)
Corporate office		(4,528	)		(4,098	)		(4,811	)(2)
Total operating income (loss)	$	19,896		$	13,709		$	(9,922	)
Segment operating margin
Fluids systems and engineering		10.1	%		9.1	%		(1.9	%)
Mats and integrated services		29.7	%		19.9	%		(55.3	%)
Environmental services		30.5	%		24.7	%		12.2	%

(1)	Includes $0.9 million of other income related to proceeds from insurance claims associated with Hurricane Ike in 2008.
(2)	Includes a total of $4.8 million of charges for employee termination and related costs associated with North American workforce reductions, the non-renewal of barge leases and asset write-downs, including $1.0 million in fluids systems and engineering, $2.6 million in mats and integrated services, $1.0 million in environmental services, and $0.2 million in corporate office.

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Newpark Resources, Inc.

Consolidated Balance Sheets

(Unaudited)	June 30,			December 31,
(In thousands, except share data)	2010			2009
ASSETS
Cash and cash equivalents	$	12,213		$	11,534
Receivables, net		172,475			122,386
Inventories		116,470			115,495
Deferred tax asset		35,315			7,457
Prepaid expenses and other current assets		12,060			11,740
Total current assets		348,533			268,612
Property, plant and equipment, net		215,336			224,625
Goodwill		60,873			62,276
Other intangible assets, net		14,350			16,037
Other assets		4,366			13,564
Total assets	$	643,458		$	585,114
LIABILITIES AND STOCKHOLDERS’ EQUITY
Foreign bank lines of credit	$	5,286		$	6,901
Current maturities of long-term debt		10,192			10,319
Accounts payable		76,183			62,992
Accrued liabilities		31,397			25,290
Total current liabilities		123,058			105,502
Long-term debt, less current portion		104,588			105,810
Deferred tax liability		30,378			2,083
Other noncurrent liabilities		4,224			3,697
Total liabilities		262,248			217,092
Common stock, $0.01 par value, 200,000,000 shares authorized 92,599,210 and 91,672,871 shares issued, respectively		926			917
Paid-in capital		463,366			460,544
Accumulated other comprehensive income		307			8,635
Retained deficit		(68,038	)		(86,660	)
Treasury stock, at cost; 2,717,363 and 2,727,765 shares, respectively		(15,351	)		(15,414	)
Total stockholders’ equity		381,210			368,022
Total liabilities and stockholders’ equity	$	643,458		$	585,114

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Newpark Resources, Inc.

Consolidated Statements of Cash Flows

(Unaudited)	Six Months Ended June 30,
(In thousands)	2010			2009
Cash flows from operating activities:
Net income (loss)	$	18,622		$	(20,791	)
Adjustments to reconcile net income (loss) to net cash provided by operations:
Non-cash impairment charges		150			941
Depreciation and amortization		13,298			14,093
Stock-based compensation expense		1,930			1,190
Provision for deferred income taxes		9,402			(6,256	)
Provision for doubtful accounts		542			1,533
Gain on sale of assets		(189	)		(265	)
Change in assets and liabilities:
(Increase) decrease in receivables		(54,167	)		111,652
(Increase) decrease in inventories		(4,132	)		12,658
(Increase) decrease in other assets		(558	)		427
Increase (decrease) in accounts payable		15,742			(45,083	)
Increase (decrease) in accrued liabilities and other		7,162			(12,592	)
Net cash provided by operating activities		7,802			57,507
Cash flows from investing activities:
Capital expenditures		(5,995	)		(14,139	)
Proceeds from sale of property, plant and equipment		1,318			734
Net cash used in investing activities		(4,677	)		(13,405	)
Cash flows from financing activities:
Borrowings on lines of credit		99,027			84,934
Payments on lines of credit		(100,782	)		(128,701	)
Principal payments on notes payable and long-term debt		(305	)		(195	)
Proceeds from employee stock plans		902			104
Purchase of treasury stock		(153	)		(212	)
Net cash used in financing activities		(1,311	)		(44,070	)
Effect of exchange rate changes on cash		(1,135	)		(1,573	)
Net increase in cash and cash equivalents		679			(1,541	)
Cash and cash equivalents at beginning of period		11,534			8,252
Cash and cash equivalents at end of period	$	12,213		$	6,711

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