Witwatersrand Nigel

A SURVEY OF THE MINERAL INDUSTRY OF SOUTH AFRICA,BY R.B.TOOMRAL INFORMATION BULLETIN MR 58,1962,MINER.RES.DIV;DEPT.MINESWITWATERSRAND GOLD,WORLD MINING, MAY,1977,P.50-53.WORLD MINES REGISTER 76-77,MILLER FREEMAN PUB,INC.DETRITAL GOLD,URANIUM,AND PYRITE CONCENTRATIONS RELATED TO SOLOGY IN THE PRECAMBRIAN VAAL REEF PLACER,WITWATERSRAND,SOUTA;W.E.L.MINTER,ECON-GEOL;V-71,#1,1977,P.157-176E/MJ INTERNATIONAL DIRECTORY OF MINING AND MINERAL PROCESSINTIONS,PUB.BY ENG.AND MIN-JOURN,MCGRAW HILL,N.Y,1976GEOL.SURV,SP.PUBL.18,1972,S.AFRICAMINING ANNUAL REVIEW,PUB.MIN.JOURN;LONDON,1977,P.431-443.MINERAL RESOURCES OF SOUTH AFRICA;GEOL SURV.PUB;EDT;BY C.B.CHAND BOOK 7,1976,FIFTH EDITION,P.39-74,233-240.MINING JOURNAL,QUARTER ENDING,JUNE,1977,P.9THE MINERAL RESOURCES OF THE UNION OF SOUTH AFRICA,GEOL.SUR.9,4TH EDITIONWITWATERSRAND MINING PRACTICE,BY WATERMEYER,G.A.AND HOFFENBEPUB.BY THE TRANSVAAL CHAMBER OF MINES,GOLD PRODUCERS COMMITTWITWATERSRAND NIGEL,LTD;ANNUAL REPORT,1975MINING JOURNAL, P. 10 (JULY 2, 1993).