| Reference | {Deposit:: DENVER LISTING, APR. 1975, P. 11.}{Deposit:: STAFF, 1978 ENGINEERING AND MINING JOURNAL INTERNATIONAL}{Deposit:: DIRECTORY OF MINING AND MINERAL PROCESSING OPERATIONS,}{Deposit:: MCGRAW-HILL, 1978, P. 301.}{Deposit:: NIGHTENGALE, WILLIAM G., MINING INTERNATIONAL YEARBOOK, THE}{Deposit:: FINANCIAL TIMES LIMITED, V. 91, 1978, P. 88.} |