blue prints for a gold cradle
blueprints on how to make a mining cradle with materials. Plan, Design and Build a Homemade Gold Rocker Box. The ''rocker'' is a box with a hopper about 3 to 4 ft. long and 1 to 2 ft. wide, sloped like a cradle, and is mounted on semicircular pieces of wood and worked by a, handle to give it a side motion; and it is also inclined so as to carry the material down to the lower end, which is open.