| Reference | {Deposit:: PINCOCK, ALLEN & HOLT, INC.; THE DEVELOPMENT OF ENGINEERING,}{Deposit:: OPERATING AND ENVIRONMENTAL COST DATA FOR INTERNATIONAL}{Deposit:: COPPER SMELTING AND REFINING OPERATIONS - CODELCO,}{Deposit:: POTRERILLOS, CHILE. BUMINES CONTRACT J0290007, MARCH,}{Deposit:: 1991. FOR INF., CONTACT S.W. TOWLE, TPO, BUMINES-MAFO,}{Deposit:: DENVER, CO.} |