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Show oo PLATINUM SUBSTITUTE. WASHINGTON April & Government Govern-ment Scientists after extensive investigations inves-tigations have found what they dc-. dc-. i re to be satisfactory substitutes for platinum for -various purposes according to -in announpement by tb I nltcd States bureau of mines In chemical requirements and for un ii, ilgb-duty electrical contracts, how-, ever, the announcement said no sub-' Btltute for platinum has ever been discovered, One of the most promis-i substitutes was said by the ex- j i'ii s to be what has cbmc to be, known as 'white gold." which is an ! alloy of gold and one of the platinum metals I oo i |