References
TOOMBS, R.B., A SURVEY OF THE MINERAL INDUSTRY OF SOUTHAFRICA, MINERAL INFORMATION BULLETIN MR 58, MINERALRESOURCES DIVISION, DEPARTMENT OF MINES, OTTAWA, 1962.WORLD MINING, WITWATERSRAND GOLD, MAY 1977, PP 50-53.WORLD MINING REGISTER 76-77, MILLER FREEMAN PUBLICATIONS,INC., 1977.MINTER, W.E.L., DETRITAL GOLD, URANIUM, AND PYRITE CONCEN-TRATIONS RELATED TO SEDIMENT GEOLOGY IN THE PRECAMBRIANVAAL REEF PLACER, WITWATERSRAND, SOUTH AFRICA, ECONOMICGEOLOGY, V. 71, NO. 1, 1977, PP 157-176.ENGINEERING AND MINING JOURNAL INTERNATIONAL DIRECTORY OFMINING AND MINERAL PROCESSING OPERATIONS, MCGRAW HILL,NEW YORK, 1976.SOUTH AFRICA, GEOLOGICAL SURVEY SPECIAL PUBLICATION NO. 18,1972.MINING ANNUAL REVIEW, MINING JOURNAL, LONDON, 1977, PP 431-443.COETZEE, C.B., MINERAL RESOURCES OF SOUTH AFRICA, GEOLOGICALSURVEY PUBLICATION, HANDBOOK 7, FIFTH EDITION, 1976,PP 39-74, 233-240.MINING JOURNAL, QUARTER ENDING, JUNE 1977.THE MINERAL RESOURCES OF THE UNION OF SOUTH AFRICA, GEOLOGI-CAL SURVEY PUBLICATION, 1959, FOURTH EDITION.WATERMEYER, G.A. AND HOFFENBER, S.N, WITWATERSRAND MININGPRACTICE, THE TRANSVAAL CHAMBER OF MINES, GOLD PRODUCERSCOMMITTEE, 1932.BRACKEN MINES LTD, ANNUAL REPORTS, 1975, 1976.AME MINERAL ECONOMICS QUARTERLY MINE ANALYSIS, JUN 93,P. 32.