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