Exhibit 10.18 PURCHASE AND SALES AGREEMENT This Purchase and Sales Agreement ("Agreement") is made and entered into as of the 28th day of August of 2000, between MINERA ANDES S.A., represented by Mr. Jorge Vargas, domiciled at Peru 930, Piso 2(o),...Purchase and Sales Agreement • March 28th, 2001 • Minera Andes Inc /Wa • Miscellaneous metal ores
EXECUTION VERSION OPTION AND JOINT VENTURE AGREEMENT THIS AGREEMENT is made as of the 15th day of March, 2001, by and between MINERA ANDES INC., a corporation formed under the laws of Canada ("MAI"), MINERA ANDES S.A., a corporation formed under the...Option and Joint Venture Agreement • March 28th, 2001 • Minera Andes Inc /Wa • Miscellaneous metal ores • New York
