AUMN and GORO added to S&P/TSX GLOBAL MINING INDEX - [pre] DECEMBER 2010 - QUARTERLY REVIEW ADDITIONS Issue Name Symbol Exchange Augusta Resource Corporation AZC TSX Avalon Rare Metals Inc. AVL TSX Baja Mining Corp. BAJ TSX Breakwater Resources Ltd. BWR TSX Cline Mining Corporation CMK TSX Cloud Peak Energy Inc. CLD NYSE Copper Mountain Mining Corporation CUM TSX Crocodile Gold Corp. CRK TSX ECU Silver Mining Inc. ECU TSX Endeavour Silver Corp. EDR TSX Gold Resources Corp. GORO AMEX Golden Minerals Company AUM TSX Intrepid Mines Limited IAU TSX Keegan Resources Inc. KGN TSX MAG Silver Corp. MAG TSX Minera Andes Inc. MAI TSX Platinum Group Metals Ltd. PTM TSX Sabina Gold & Silver Corp. SBB TSX Sulliden Gold Corporation Ltd. SUE TSX UEX Corporation UEX TSX Uranium Energy Corp. UEC AMEX [/pre]