![rocker box upper canvas](/6ky5vhl/732.jpg)
rocker box upper canvas
· Gold prospector pouring water through his rocker box, Pinos Altos, New Mexico (1940). Rocker box exhibit at Dahlonega Gold Museum. A rocker box (also known as a cradle) is a gold mining implement for separating alluvial placer gold from sand and gravel which was used in placer mining in the 19th century. It consists of a highsided box, which is open on one end and on top, [1] and was placed ...