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Show Leaching Resource Waste Emphatic testimony that none ot Utah's resources are being wasted :an he had from the operation of :he Ohio Copper Company ot Utah it ningham. Here - the company I winning jopper from the earth that la ton ow grade to be mined In the umial nanner. Years ago the Ohio Copper Cop-per company mined copper ore at ningham by the orthadox method Df tunnels and dr'fts thtough tha inderground. In mining the richer )res, the company was forced to leave a vast amount of low grade Jlscemlnated through v the rocks hat would not bear the expense ot mining. The property was not adaptable :o the open-cut methods, to a proo ss of leaching was applied, using ;he old workings to collect copper I n solution. Water was sprinkled on the siir-!ace siir-!ace to add to the normal supply provided by rains and snow. After :he water has percolated through he masses of low grade ore, It has jlcked up a certain amount of cop-jer. cop-jer. In the old underground work ngs, tanks have been Installed that catches" a certain amount of this water. In these tanks is placed a cer-:a!n cer-:a!n amount of Bcrap tin. which icts to attract the copper from tha ivater. The copper thus attracted toon turns the tin to copper and ifter the copper Is taken from :he water It is pumped back to the turface and permitted to percolate lown through the ore again. I The system of precipitating copper cop-per from water which washes ;hrough copper depo:'!i Is a com-Inion com-Inion practice, but Ohta Copper is Die only place where it is known ;o be mined underground. Precipitation is said to have been llscovered by u minor living near i stream which f'- ;ed through a :opper deposit. Tin cans that he llscardcd into the stream were soon turned to copper and unknowingly ie had discovered a process which was to play an important part In the production of property and the sonservatlou of our resaurces. National Forest Timber For Sale Scaled bids will be received by the Forest Supervisor, Cedar City, Utah up to nnd including April 2 1946, for all the live timber marked or designated for cutting and all the merchantable dead timber standing or down located on an area embracing embrac-ing about 235 acres within S c. 19. T. 37 S.. R 8 W. and Sec. 24. T 37 S. 'r. 8' W. S.L.M, Sage Valley Chance Dixie National Fore.t. Utah, estimated es-timated to be 720 M feet b. m. of Encclmann suruce sawtlmber. I02 J scale, more or less. No bid of less j than $2.70 per M will be considered. Elds with rates in excess of those permissible under MPR-460 will be reduced to the allowable maximum In mnklng the awrd. In addition to making pajments for Ftumpage the purchaser will be required to make an additional deposit of $5C per M feet board measjre for the total cut of sawtlmber Included in the sale into a cooperative work fund to pay the cost of timber stand Improvement work. A deposit of $300.00, payable to the Treasurer if the United States must accompany accom-pany ea:h bid to be applied to the purchase price, refunded, or retained re-tained in part as liquidated damages dam-ages according1 to the conditions of sale. The right to reject any and all bids Is reserved. Before bids are 'ubmltted, full Information concerning con-cerning the timber, the conditions of sale and the submission of nlds should be obtained from the Forest For-est Supervisor, Cedar City, Utah. (Feb. 28 and March 21, 1946) |