| Reference | {Deposit:: ANDEAN-PERUVIAN TIMES, 1974, DEVELOPMENT AND EXPANSION PROJE}{Deposit:: LIMA, PERU, VOL. 34, NO. 1764, P. 63.}{Deposit:: 1975-76 EMT INT.DIRECTORY}{Deposit:: ENGINEERING AND MINING JOURNAL INTERNATIONAL DIRECTORY OF}{Deposit:: MINING AND MINERAL PROCESSING OPERATIONS, PERU: NEW}{Deposit:: YORK, MCGRAW-HILL, 1978, P. 326.}{Deposit:: RIO TINTO ZINC MINING COST ANALYSIS SYSTEM, PERFORMANCE}{Deposit:: ANALYSIS: APRIL 14, 1975, P. 64.} |