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Ch. 17: Distribution of Gold

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THE DISTRIBUTION OF GOLD IN SLUICES.           259
The arrangement of the sluices here is as follows :
The undercurrents (10 in number) are similar to those used at the French Corral mine. They are 42 feet long (the apron over which the water is spread forms a part), 20 feet wide, set on grades ranging from 10-1/2 inches to 16 inches per box, and are paved with blocks 6 by 17 by 4 inches in size.
The three following tabulated exhibits are self-expla­natory, and show in the Manzanita mine the results pro­duced by widening the undercurrents.
* Each box 14 fecL in length.
Ch. 17: Distribution of Gold Page of 331 Ch. 17: Distribution of Gold
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