| Reference | {Deposit:: MINING JOURNAL, CHILE: CODELCO PLANS FOR LOWER GRADES: V.}{Deposit:: 288, NO. 7396, 1977, P. 388.}{Deposit:: ENGINEERING AND MINING JOURNAL, CHIL* CODELCO PONDERS}{Deposit:: MAJOR CHANGES IN ADMINISTRATION OF KEY COPPER MINES: V.}{Deposit:: 179, NO. 11, 1978, P. 36.}{Deposit:: ENGINEERING AND MINING JOURNAL, CHIL* CODELCO SIGNS FIRST}{Deposit:: CONTRACTS FOR LONG-TERM EXPANSION OF EL TENIENTE: V.}{Deposit:: 179, NO. 7, 1978, P. 34, 37.}{Deposit:: CORPORACION NACIONAL DEL COBRE CODELCO CHILE, ANNUAL REPORT,}{Deposit:: 1976.}{Deposit:: 1979-1980 WORLD MINES REGISTER, COMPANIES BY COUNTRY:}{Deposit:: CHILE: SAN FRANCISCO, MILLER-FREEMAN PUBLICATIONS, 1979,}{Deposit:: P. 92.} |