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Ch. 20: Cost and Yield of Gold Working

Ch. 20: Cost and Yield of Gold Working Page of 331 Ch. 20: Cost and Yield of Gold Working Text size:minus plus Restore normal size   Mail page  Print this page
COSTS OF WORKING AND THE YIELD OF GRAVEL. 277
fully arranged, and the data of the yield and disburse­ments are accurate. The apportionment of the material account has in some places been calculated from the gene­ral material account. The measurements of the ground washed were made at each clean-up, and subsequently the entire ground was resurveyed and the work checked.
The following tabular statements show the workings of a mine on four per cent, grades, high banks, and with great hydrostatic pressure. The advantages of heavy grades and pressure over the minimum La Grange grades are clearly shown by the quantity of material moved, and a comparison of the work and costs will be of interest to those engaged in hydraulic mining (see Table XLVII I.)
Ch. 20: Cost and Yield of Gold Working Page of 331 Ch. 20: Cost and Yield of Gold Working
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