Question: Calculate the B.E.S.R in the mining and processing a 0.60% copper ore deposit given the following information. Selling price in concentrate $1.63/kg Surface mining costs $ 6.80/ton Surface stripping costs $ 7.50/ton Overall (milling and Smelting) 92% BESR - Break Even Strip Ratio
Get PriceEPA-670/2-75-018 April 1975 RECLAMATION OF METAL VALUES FROM METAL-FINISHIHG WASTE TREATMENT SLUDGES By Arch B. Tripler, Jr. R. H. Cherry, Jr. G. Ray Smithson, Jr. Battelle-Columbus Laboratories Columbus, Ohio 1+3201 Program Element No. 1BB036 Project Officer Eugene F. Harris Mining Pollution Control Branch (Cincinnati, Ohio) Industrial Waste Treatment Research
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Get PriceJul 20, 2017 (1) Co p per p r oduc t i o n s h o w n o n a c o n t a i ned m et a l b as i s. Copper production decreased by 2% to 140,800 tonnes. Production from Los Bronces increased by 4% to 79,000 tonnes. Production benefited from higher ore grades (0.70% vs. 0.62%) and strong plant performance, partly offset by an expected increase in ore hardness
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Get PriceStermole, B.S.B.A., Finarce, University of Denver, and M.S., Mineral Economics, Colorado School of Mines, is President of Investment Evaluations Corporation. Since 1988 John has taught as an Instructor at Colorado School of Mines for the Departments of Mineral Economics, Chemical And Petroleum Refining Engineering and Environmental Sciences
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