Collier's New Encyclopedia (1921)/Cradle

From Wikisource
Jump to: navigation, search

CRADLE, or “rocker,” a mechanical contrivance used in placer mining, consisting of a box on rockers and moved by hand, used for washing out the gold-bearing soil.

Retrieved from "http://en.wikisource.org/w/index.php?title=Collier%27s_New_Encyclopedia_(1921)/Cradle&oldid=2504768"