| Reference | {Deposit:: LYDAY, P.A., 1992, HISTORY OF BORON PRODUCTION AND PROCESSING: INDUSTRIAL MINERALS, NO. 303, P. 19-37.}{Deposit:: ROSKILL INFORMATION SERVICES, 1993, THE ECONOMICS OF BORON 1993, 7TH ED.: LONDON, ROSKILL INFORMATION SERVICES LTD., 156 P.}{Reserve-Resource:: LYDAY, 1992.} |