NEW YORK ( TheStreet) -- Mines Management ( MGN), Harmony Gold Mining ( HMY), U.S. Gold ( UXG) and International Coal Group ( ICO) rallied higher, whereas Penn Virginia Resource Partners ( PVR), Golden Star Resources ( GSS) and Cloud Peak Energy ( CLD) ended the week in red. This compares to a 2.7% increase registered by the S&P 500.Most metal and mining winners last week comprised of precious metal stocks in the U.S. Both gold and silver touched all-time highs last week. Concerns that Portugal may need a bailout coupled with the political turmoil in Libya and events in Japan triggered investment demand for the yellow metal. Gold touched an all-time high of $1,448.60 an ounce on March 23 before closing at $1,430 on March 25. Gold miners, such as Minera Andes and U.S. Gold, are forecasting gold price at $5,000 per ounce in the next three to four years. Silver, on the other hand, experienced the longest rally since early December. The white metal touched $38.18 an ounce, the highest since February 1980, before closing at $37.33 on March 25. The metal gained 5.9% during the past week. Leading the advancers' list at the back of this rally was Mines Management, which gained 21.2% last week. The stock had erased an identical percentage during the week ended March 21. Gold producers Harmony Gold Mining and U.S. Gold accumulated 18.8% and 13.2%, respectively. Last week, Royal Bank of Canada upgraded its rating on Harmony Gold to outperform from sector perform and noted that the company's Papua New Guinea mine could be a takeover target. International Coal Group gained 10.5% on reports that it may be the most attractive takeover target in the eastern U.S. coal belt. The report said that the acquirer could pay $13 per share, implying a premium of 17% over current levels. Australia-based miner Alumina ( AWC) and U.S.-based gold and silver producer Coeur d'Alene Mines ( CDE) accumulated 9.9% each last week. Another coal producer, Massey Energy ( MEE), advanced 9.8% on concerns of a nuclear crisis at Japan's Fukushima Nuclear Power Plant and the safety of nuclear energy. These concerns sparked a rally in alternative energy producers. Walter Energy ( WLT) gained 8.6% during the past week. Silver producer Silver Wheaton ( SLW) and palladium/platinum miner Stillwater Mining ( SWC) rose 9.8% and 9.7%, respectively. Silver Wheaton reported a 9% increase in its proven and probable reserves in 2010, largely attributable to an increase of 80 million ounces of silver and 23,000 ounces of gold, to a record 954 million silver equivalent ounces.