| Reference | {Deposit:: PINCOCK, ALLEN & HOLT INC. DEVELOPMENT OF ENGINEERING,}{Deposit:: OPERATING AND ENVIRONMENTAL COST DATA FOR INTERNATIONAL}{Deposit:: COPPER SMELTING AND REFINING OPERATIONS. BUMINES CONTRACT}{Deposit:: J0290007; FOR INF. CONTACT S.W. TOWLE, TPO, MAFO, BUMINES}{Deposit:: DENVER, CO, NOV 1991}{Deposit:: METALS WEEK, 3/23/92, P. 6.} |