| Reference | {Reserve-Resource:: MINING JOURNAL, NOV 3, 1989}{Reserve-Resource:: E&MJ, FEB 1990}{Reserve-Resource:: INDUSTRIAL MINERALS, DEC 1989}{Reserve-Resource:: INTERNATIONAL MINING, JUNE 1990}{Reserve-Resource:: MINING MAGAZINE, MAY 1990}{Reserve-Resource:: MINING JOURNAL, NOV 9, 1990}{Reserve-Resource:: INDUSTRIAL MINERALS, DEC 1990}{Reserve-Resource:: MINING JOURNAL, JAN 11, 1991} |