NEW YORK ( TheStreet) -- Endeavour Silver (EXK - Get Report), New Gold (NGD - Get Report), Brigus Gold (BRD), Yamana Gold (AUY - Get Report) and Walter Energy (WLT) showed strength last week; James River Coal (JRCC), Westmoreland Coal (WLB - Get Report), ArcelorMittal (MT), Yanzhou Coal Mining (YZC), Mechel (MTL) and Gold Reserve (GRZ) were the notable losers.
Endeavour Silver led the winners' list last week, up 19.6%.
Precious metals showed relative strength last week, pushing New Gold and Brigus Gold up 14.9% and 12.3%, respectively, last week.
Yamana Gold advanced 12.2%.
Walter Energy gained 11.2%, after an upgrade at FBR.
The Johannesburg-based fourth-largest producer of precious metals,
, climbed 10.8% after posting 15% net profit growth during the second quarter, buoyed by rallying gold prices and higher production.
moved up 8.9% and
rose 1% as it seeks to invest $50 million to fully realize the copper reserve wealth at its Lumwana Mine in Solwezi.
advanced 7.8% after declaring its eighth monthly dividend payment of 3.4 cents per share for 2011.
Harmony Gold Mining
racked up average gains of 6%.
Compania de Minas Buenaventura
increased 5.7% last week. The company has received necessary permits from Peru's Energy and Mining Ministry to start metallurgical operations at Tantahuatay.
James River Coal declined 14.9%, topping the losers pack after Brean Murray downgraded the stock from buy to hold.
Westmoreland Coal erased 13.5% last week.
ArcelorMittal dived 10.7% after a blast furnace failed at its New Castle facility in South Africa,
Yanzhou Coal Mining, Mechel and Gold Reserve wiped out an average 10% each.
Other laggards included
Platinum Group Metals
Solitario Exploration & Royalty
Aluminum Corp. of China
United States Steel
Schnitzer Steel Industries
shed around 5.8% to 7.3%, on average.