baluba pper mine reserves

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  Abstract Baluba mine was commissioned in 1973 and since then over 55 million tonnes of ore has been mined leaving out only 84 million tonnes reserves at very low block grade and structurally thin and di fficult to mine The area referred to as Baluba east has the ore body lying below 330 ml and 400 ml

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  Baluba mine was commissioned in 1973 and since then over 55 million tonnes of ore has been mined leaving out only 84 million tonnes reserves at very low block grade and structurally thin and difficult to mine The area referred to as Baluba east has the ore body lying below 330 ml and 400 ml

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  Block size selection and its impact on openpit design

  mineral resourceore reserve evaluation as the ‘support effect’123 This support effect has an impact on the amount of material whose grade exceeds a given cutoff ore Information effectduring the operation grade control is based on the estimated Block size selection and its impact on openpit design and mine planning

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  2 000 reserves mineralized operational and demonstrates with deposits significant face availability and additional mining flexibility The additional resources key assumptions for the project are • 29 Mt of ore reserve will be mined at a sustainable rate of 033 Mt per year sustaining the life of the mine for another approximately 9 years

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  Nov 04 2013 · Grasberg mine in the Papua province of Indonesia ranks as the world’s tenth largest copper mine by reserve The mine’s open pit and underground copper reserves as of December 2012 were estimated at 1047Mt The mine produced 315246t of copper in 2012 Grasberg is also the biggest gold mine in the world by reserve

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  A fracture in the overburden above the converted salt mine the only site in the Reserve that used a former mine to store crude oil threatened the sites geologic integrity and its 73 million barrels of crude oil On October 5 1994 the Energy Department had announced that it would begin transferring the oil to other sites to reduce the

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  Mar 10 2020 · Mine Life years 2 14 13 Proven and Probable Mineral Reserve Gold Grade gt 126 84 Recoveries GoldSilver 965879 963904 LOM Average Annual Gold Production ‘000 ounces

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  Derek Holm BSc FSAIMM is a Senior Mining Engineer with 18 years production and project experience which includes mine design and scheduling for open pit and underground mines mine optimization Mineral Reserve estimation and analysis of production options with the

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  Recoverable reserves at producing mines are the amount of recoverable reserves that coal mining companies report to EIA for their US coal mines that produced more than 25000 short tons of coal in a year EIA estimates these reserves at about 15 billion short tons of recoverable reserves of which 62 is surface mineable coal

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  Block size selection and its impact on openpit design

  mineral resourceore reserve evaluation as the ‘support effect’123 This support effect has an impact on the amount of material whose grade exceeds a given cutoff ore Information effectduring the operation grade control is based on the estimated Block size selection and its impact on openpit design and mine planning

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