DCHP-1 Online
sluicing-box Placer Mining 
n. a long box or trough containing riffles (def. 2) by means of which gold is separated from gravel. [See picture at sluice-box.]
See also: riffle ((n.)) (def. 2) sluice-box (and picture)
- 1897 The boat was hauled up on a bar, her engines detached from the wheels, and made to drive a set of pumps manufactured on the ground, which supplied water for a set of sluicing boxes.
- 1909 The riffles of his sluicing-box were choked with speckled earth,/And night and day he worked that lay for all that he was worth.
- 1897 The boat was hauled up on a bar, her engines detached from the wheels, and made to drive a set of pumps manufactured on the ground, which supplied water for a set of sluicing boxes.