NEW YORK ( TheStreet) -- Great Northern Iron Ore Properties (GNI), IAMGOLD (IAG - Get Report) and ArcelorMittal (MT - Get Report) outperformed other stocks past week, while Mines Management (MGN), James River Coal (JRCC) and Alpha Natural Resources (ANR) eroded a significant portion from their stock value.Great Northern Iron Ore Properties emerged a top gainer last week increasing 6.2%. The company is considered to have one of the highest dividend yields, currently trading at 12.01%. IAMGOLD followed gaining 5.4% last week, after entering into a private placement agreement of approximately $1.2 million with Dios Exploration for a future joint venture and for acquiring a 60% interest in Dios's Shipshaw Project. Moreover, IAMGOLD announced record fourth quarter gold production of over 310,000 ounces. The company said 2010 gold production is at the upper end of its guidance range of 940,000 to 970,000 ounces, while cash cost is well within $565 to $585 per ounce.
Metals and Mining: Winners and Losers
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