| Reference | {Deposit:: ENGINEERING AND MINING JOURNAL INTERNATIONAL DIRECTORY OF}{Deposit:: MINING AND MINERAL PROCESSING OPERATIONS. UNITED KINGDOM.}{Deposit:: MCGRAW-HILL, INC., NEW YORK, 1978, P. 283.}{Deposit:: MINING MAGAZINE. UNITED KINGDOM. JANUARY 1979, P. 57.}{Deposit:: MINING MAGAZINE. UNITED KINGDOM. SEPTEMBER 1969, P. 247.} |