Looking for Gold in Sand and Gravel Plants
The base of the rag plant should be flat and horizontal. Sand and gravel plants make money by producing sand and gravel. Anybody setting up a rag plant must remember that in their mind, everything on the rag plant must be installed so that it cannot obstruct in any way with the sand gravel process or cause a block at any time. For this cause the water flow and pitch of the rag plant must be modified to sand and gravel process rather than gold recovery. An extremely efficient method worked out over years of actual process is to use indoor-outdoor carpet on the base of the rag plant, with steel punch plate riffling straight on top of the carpet.
The carpet grabs the gold particles as they are carried down the rag plant. Indoor-outdoor carpet has exact return over burlap, wool blankets, and wool rugs which have exist and often still are used. Being a plastic, the carpet does not rot or fall to parts as do the other materials. The nap or surface fibers are extremely resilient. They are not enduringly crushed by the weight of the sand and water going over them. Being plastic, these fibers do not wilt when they become wet. Even though the first cost of this carpet is tall its efficiency and long life make its use cheaper than other materials. Punch plate is steel plate witch cracks punched out of it. It serves 2 purposes. 1 it holds the carpet flat beside the base of the rag plant. 2, the holes in the punch plate origin a riffling action, or confusion in the water and in the sand being passed by the water. It is these mystifications that permit the gold to drop from the flow of sand and selected up by the fibers of the carpet. A punch plate which square holes seems to make the most useful riffle. Round holes work, but not as fine. Punch plates which are one-quarter inch thick, with 1 and one quarter inch square holes half an inch apart have worked very productively .