Show Underground Industry F II I I l 7 7 4 F Fi I r rI I j I i f s 2 s sr Leac Leaching hing in place at t Ohio Copper in in Bingham r r ri One of or the most unique mining o operations in tie the world Is that of the Ohio Copper Company Compan of at Utah o at Binham where It la Is winning 1 Ii copper from tram a disseminated ore orey y body Years ago the company mined Its copper ores in the usual manner driving tunnels and drifts through c t the underground This was expensive ex ex- pensive anti and could only be done during high market prices for the metal owing to the low grade gradei 1 i character of or the product mined 0 n In addition to the product mined 1 J there thero was a vast amount of at low grade copper ore bre in the porphyry on which tho the property Is located The Tho was not adaptable to tov tor v r the open-cut open methods so a process i of or leaching was adopted using the theold 0 old workings to collect the copper in solution H In the process water is sprinkled Ion I on the surface and collected in tune tunI tun tun- I nels deep down in ill the deposit After e the tho water has percolated through the ore are masses picking up certain amounts of at the copper in the ground It Is diverted to tanks In inthe tho the tunnels These tanks contain tin Un which again attracts the copper copper copper cop cop- per from tram the water and eventually turns the tin to copper The water iz is then pumped back to the surface to rework tho the oro ore again Precipitating copper from water which percolates through copper deposits is a common practice but Ohio Copper Is the only place where whore it Is known to be mined In such a manner The precipitation of copper Is said to have been discovered by a miner living near a stream which originated in the hills of at a 0 copper deposit Tin cans that he disposed of in the stream soon turned to copper copper copper cop cop- per and to his hie amazement he had discovered a process which has for tor or years played an as Important part Inthe in inthe the tho production of the red metal |