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HOW TO ASSAY GOLD ORE · 6.3 Pure Gold for Proof Samples Gold of minimum purity 999.9 parts per thousand (960) by mass. 6.4 Copper Foil/Wire or Disc Minimum purity of 999 parts per
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HOW TO ASSAY GOLD ORE
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WORLD-RENOWNED QUALITY AND INNOVATION - Monexthe science and art of making gold and silver bullion of unsurpassed purity. 1979 – Launched Canada’s first 99.9% pure gold bullion