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