Reference | {Deposit:: MINERAL RESOURCES OF THE REPUBLIC OF SOUTH AFRICA, FIFTH EDITION, HANDBOOK 7 , DEPARTMENT OF MINES, GEOLOGICAL SURVEY; 1976}{Deposit:: MINERAL RESOURCES OF SOUTH-CENTRAL AFRICA; PELLETIER, R. A.; 1964}{Deposit:: THE MANGANESE DEPOSITS OF THE UNION OF SOUTH AFRICA, HANDBOOK 2 , DEPARTMENT OF MINES, GEOLOGICAL SURVEY; 1960}{Production:: SOUTH AFRICAN MANGANESE AMCOR LIMITED ANNUAL REPORTS, 1974 - 1976 , AND SOUTH AFRICAN MANGANESE AMCOR LTD. BROCHURE; CIRCA 1976. AFTER 1976: PRESS RELEASES & SOUTH AFRICAN MINERALS BUREAU ; ESTIMATE BASED ON TOTAL COUNTRY PRODUCTION OF MANGANESE (SUPPLIED BY MINERALS BUREAU) AND INFORMATION SUPPLIED BY SAMANCOR OFFICIALS.} |