Sand Making Blueprints On How To Make A Mining Cradle With ...
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 and was placed on rockers. Get Price blueprints on how to make a mining cradle with materials. how to