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In a message dated 4/3/00 5:52:12 PM, [log in to unmask] writes: << Borax is not used in the Fire Assay process for Gold & Silver. >> I beg to differ. Bugbee, Edward E., A Textbook of Fire Assaying, Colorado School of Mines, Golden, 1940 gives a complete explaination of how borax is used in fire assaying for Gold and Silver. Mason %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%