Getting Gold a Practical Treatise for Prospectors Miners And Students
Getting Gold a Practical Treatise for Prospectors Miners And Students
Jc F Johnson
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If the battery is used, ordinary precautions, of course, must be taken to prevent waste, or thedust becoming obnoxious to the workmen. The ore is then transferredto the Chilian mill and made to the consistency of porridge, thequicksilver being added. When the principal work of amalgamation is done(experience soon teaching the amount of grinding necessary), from theChilian mill the paste (so to say) is passed to a Wheeler or anyother good pan of a similar type, when the gold-saving operation isc...ompleted. " This being an experiment in the same direction as my own, I tried it ona small scale. I calcined some very troublesome ore till it was fairly"sweet, " triturated it, and having reduced it with water to about theconsistency of invalid's gruel, put it into a little berdan pan madefrom a "camp oven, " which I had used for treating small quantities ofconcentrates, and from time to time drove a spray of mercury, wherein asmall amount of zinc had been dissolved, into the pasty mass by meansof a steam jet, added about half an ounce of sulphuric acid and kept thepan revolving for several hours.
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