(Mining) A trough or sluice having cleats, grooves, or steps across the bottom for holding quicksilver and catching particles of gold when auriferous earth is washed; also, one of the cleats, grooves, or steps in such a trough. Also called ripple.
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"Riffle" Quotes from Famous Books — Our Boys - Entertaining Stories by Popular Authors • Various — Hittel on Gold Mines and Mining • John S. Hittell — The Tyranny of Weakness • Charles Neville Buck — The Flying U's Last Stand • B. M. Bower — The Banner Boy Scouts Snowbound - A Tour on Skates and Iceboats • George A. Warren |
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