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Hammer Gold Ore Defects

2020-7-23Small buttons such as are got in assaying most gold ores are placed on a polished steel anvil and flattened by one or two blows with a hammer. The flattened discs are heated to dull redness on a clean cupel and are then ready for parting. Somewhat larger buttons may be similarly treated but they should be annealed i.e. heated to redness and allowed to cool during the flattening.

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