NEW YORK ( TheStreet) -- Mining stocks ended Mondays trading session mixed, on a medley of news ranging from steel legal battles to the outcome of key environmental permitting hurdles.

AK Steel ( AKS), for one, finished the trading session up 5.4% at $21.30. American Metal Market reported that AK Steel said it has weathered the storm of the global financial crisis and expects to enter 2010 in position to take advantage of what it expects to be significantly better market conditions for carbon flat-rolled steel products. The three-month average daily volume for AK Steel is 8.1 million.

Meanwhile, ArcelorMittal ( MT) stock gained 2.2% to reach $42.50 at Monday's close. ArcelorMittal France is suing three U.S. steel companies for allegedly violating its patent for certain aluminum-coated boron steel products. AK Steel, of West Chester, Ohio; Severstal Dearborn, of Dearborn, Michigan; and Wheeling-Nisshin, of Follansbee, West Virginia, are the defendants named in the case. The complaint was filed on Jan. 22 at a Delaware district court.

On a brighter note, ArcelorMittal on Jan. 19 announced it has entered into initial discussions with BHP Billiton ( BHP) to potentially combine their respective iron-ore mining and infrastructure interests in Liberia and Guinea within a joint venture. The three-month average daily volume for ArcelorMittal is 4.6 million.

Posco ( PKX) shares added 2.1% to close at $125.70. Posco's proposed $12 billion, 12 million metric tons-a-year steel plant in Orissa, India, has faced regulatory hurdles and delays of three years, but India's steel minister now says those issues will be resolved in four to five months, according to various media reports. The three-month average daily volume for Posco is 428,000.

Alpha Natural Resources ( ANR) stock also ended the day up, by 2.9% to $45.40. Zack's Investment Research says that based on Zack's Rank -- a short-term, up to about 3 month, tool for trading -- coal looks better than alternative energy on both the absolute increase, and on the weekly improvement.

It is widely predicted that cold spells worldwide will be bringing in money for the coal producers and keeping them busy. On January 20, coal was in 52nd place out of the 206 industries Zacks ranks, improving by 52 spots over the last week.

Meanwhile, the stock with Zack's number-one ranking is Alpha Natural Resources. The three-month average daily volume for Alpha Natural Resources is 3.3 million.

Kinross ( KGC ) stock, for its part, fell 2.1% to end the trading session at $17.40. Kinross announced mid-last week that it has agreed in principle to acquire the high-grade Dvoinoye deposit and the Vodorazdelnaya property, both located approximately 90 kilometers north of Kinross Kupol operation in the Chukotka region of the Russian Far East. Kinross plans to process ore from Dvoinoye at the existing Kupol mill, pursuant to an ore purchase agreement with Kinross 75% owned Chukotka Mining and Geological Company, the owner of the Kupol mine.

The transaction entails the indirect acquisition of 100% of the participatory interests in Northern Gold and Regionruda, the owners of the Dvoinoye and Vodorazdelnaya exploration and mining licenses. The total purchase price is $368 million, comprising $165 million in cash and approximately 10.56 million newly issued Kinross shares. The three-month average daily volume for Kinross is 8.1 million.

IAMGOLD ( IAG ) stock lost 3.2% to end the day at $14.10. IAMGOLD announced on Monday that its total proven and probable mineral reserves increased by 2.1 million ounces to 14.5 million ounces of gold, which represents a 17% increase over the previous year. Total proven and probable mineral reserves of niobium have increased by 32% to 181.3 million kilograms of contained Nb2O5.

The company says it will continue its aggressive approach to organic growth in 2010. The three-month average daily volume for IAMGOLD is 6.4 million.

Taseko Mines ( TGB ) stock fell 2.1% to $4.80. Last Friday American Metal Market said that Taseko Mines, after clearing a key environmental permitting hurdle, is moving forward with relevant permitting on its Prosperity gold-copper project in British Columbia. The British Columbia provincial government approved the environmental assessment certificate for Taseko's proposed Prosperity Mine last week, AMMreported. The three-month average daily volume for Taseko Mines is 3.2 million.

-- Reported by Andrea Tse in New York

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