NEW YORK ( TheStreet) -- Solitario Exploration & Royalty (XPL), Westmoreland Coal (WLB - Get Report) and Tanzanian Royalty Exploration (TRE) were the top gainers last week; North American Palladium (PAL), Mag Silver ( MVG ) and US Gold (UXG) lapsed into red territory.Solitario Exploration & Royalty emerged a top gainer last week, rising 20%. Westmoreland Coal followed, gaining 9.7% after reporting first quarter 2011 earnings. The company's operating income for the first quarter stood at $7.4 million as compared to $5.3 million in the same quarter of the prior year. While EBITDA was up 9.7% to $23.3 million, revenue increased by 1% to $127.8 million for the same period.
Metals and Mining: Winners and Losers
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