Show mining miming industry built on low grade ores 6 Z 4 A y A M 1 N a e az Y A pa t anin M za rth djs 00 p 6 il g avi t nak ag va 71 wa 11 16 W 1 e looks like country rock but it Is I 1 s less than I 1 percent copper ore going doing into huge crusher or coffee grinder at magna all mines contain a varying the hope that it may bo be of value at mount amount of low loft grade ore oie a term some future time given to that grado grade which Is too therefore the higher the cost of low in mineral values to ship small operating a mine the smaller the mineral values are in the ore but fineable mine able ore body becomes and the the cost of producing it la Is too smaller the ore reserves and the heavy to meet the mining milling smaller the mining industry and smelting smelling sm elting ch charges arges in utah mines have adopted a TI the 1 e amount ot of ore in a mine to Is policy ot of mining as much low grade ther therefore afore largely determined by as possible thereby lengthening thi operating costs encountered in tho the life of the enterprise rather handling it labor costs supply than gutting the high grade ore ora costs sometimes pumping costs tor for a temporary temporal y showing i shipment costs treatment costs and it becomes a tragedy when hen low taxes all enter into the situation grade ores are lort hit in the ground low grade ore Is a problem in because miners enn cm seldom came somo some instances it Is necessary to back and take this ore out unless mine the product and store it on the low grade Is 11 mined with the the duap but moro more often it Is left hilgh braile graile the E g t majority will in the mine when it Is piled on remain to fo roeer eer vever thus the dumn clump it Is generally stored much potential v alth Is lost to separate from the mine waste in humanity forever tore fore vcr c t |