| Reference | {Deposit:: MINERA FRISCO INFORME ANUAL 1977, P. 1-30.}{Deposit:: MINING INTERNATIONAL YEARBOOK, 1978, P. 388.}{Deposit:: STAFF, ENGINEERING AND MINING JOURNAL INTERNATIONAL}{Deposit:: DIRECTORY OF MINING AND MINERAL PROCESSING OPERATIONS,}{Deposit:: NEW YORK, MCGRAW-HILL, 1976, P. 257.}{Deposit:: MINING MAGAZINE, JUNE 1977, P. 474.}{Deposit:: MINING MAGAZINE, JANUARY 1979, P. 55.} |