| Reference | {Deposit:: RIO TINTO ZINC MINING COST ANALYSIS SYSTEM: PERFORMANCE}{Deposit:: ANALYSIS: FEBRUARY 25, 1975, P. 270.}{Deposit:: ENGINEERING AND MINING JOURNAL INTERNATIONAL DIRECTORY OF}{Deposit:: MINING AND MINERAL PROCESSING OPERATIONS: NEW YORK,}{Deposit:: MCGRAW-HILL, 1978, P. 325.} |