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ANALISIS BREAK EVEN STRIPPING RATIO UNTUK DESAIN PIT ,

The optimal pit limit is determined using Break Even Stripping Ratio (BESR) analysis There are two models of BESR analysis that will be used at this research...

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Development of Underground Coal Mine from Toe of Open , - J-Stage

However, the conditions of their surface mines are worsening each year: The stripping ratio is approaching to the value of break even stripping ratio, the....

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Surface mining planning and design of open pit mining - SlideShare

9 Jan 2016 , The ratio of the waste and ore is calculated and compared to the breakeven stripping ratio for the grade of ore along the pit limit If the....

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Stripping ratio Definition – Resource/Mining Dictionary | Casey ,

The stripping ratio refers to the amount of waste rock vs ore (as opposed to , Haulage costs can vary a great deal, even over the same distance, if, for example,....

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Cut-off Grades for Mineral Resource Reporting - Micon International

13 Jul 2016 , , one cut-off grade, they typically have a base case or break-even cut-off , the stripping ratio increases) and eventually an economic pit limit is....

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Victory Nickel: Minago

Internal rate of return ("IRR") of 198%; Breakeven price of nickel is US$465/lb , Strip ratio of 117:1 to mine the nickel including frac sand as overburden/waste...

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Iron ore miners cannot sustain cost cuts, say fund managers

8 Jul 2015 , Reducing strip ratios help lower costs in the short term because there , a lower break-even than Fortescue's that will probably start creeping up....

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What Is a Stripping Ratio? (with picture) - wiseGEEK

A stripping ratio is the ratio of waste material that will have to be removed , to three and a half parts of waste in order to break even, it stands to reason that the....

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1 4 Stripping Ratio | Ratio - Scribd

The various stripping ratios that are used in surface mining are the following: 1 2 3 4 5 6 7 Volumetric / geometric strippling ratio Break even stripping ration....

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PENENTUAN BREAK EVEN STRIPPING RATIO (BESR) DENGAN ,

30 Mei 2016 , PENENTUAN BREAK EVEN STRIPPING RATIO (BESR) DENGAN PENDEKATAN BIAYA OPERASI PENAMBANGAN BATUBARA DI....

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break-even stripping ratio | Britannica

The ratio of the amount of waste rock stripped to ore removed is called the overall stripping ratio The break-even stripping ratio is a function of ore value and the....

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Open pit or block caving? A numerical ranking method for selection ,

operational risk, etc, so normally it considered as preferred option; but break-even depth, high stripping ratios, and environmental issues have become....

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Study: New projects need a $350 copper price | MINING

15 Apr 2015 , , to low strip-ratio openpit mining, which allows for low operating costs , reduce and demand will incrementally or even drastically increase,....

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Cut-off Grade and Hauling Cost Varying with Benches in Open Pit ,

Where SR: stripping ratio (waste tonnage /ore tonnage) , On each bench the ore tonnage above the break-even cutoff grade are measured and the average....

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Manica project strategic and progress report - RNS - London Stock ,

17 Nov 2016 , The optimisation overall stripping ratio before detailed design is circa 72 Optimisation break even all-in cost including capital recovery is....

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Kumba Interim Results for the six months ended June 2015 – Anglo ,

21 Jul 2015 , , in the group's cash breakeven price to $45/tonne (62% Fe CFR China) , Mt thereafter, with the average LOM stripping ratio remaining at 39...

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Can Indonesia's coal mines maximise strip ratios , - Wood Mackenzie

We analysed the breakeven strip ratio for Indonesia's coal mines and its potential impact on reserv...

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Artikel Pelajaran dan Pengetahuan: Tambang Batubara

13 Des 2009 , Stripping ratio antara tambang terbuka yang menghasilkan perbedaan biaya impas (break even cost) dengan penambangan secara tambang....

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Basic Mining Techniques : Determining Stripping Ratio

4 Apr 2016 , The maximum allowable Stripping Ratio (SRmax) defines break even stripping ratio (BESR) This represents the highest possible units of waste....

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npv - Perpustakaan Digital ITB - WELCOME | Powered by GDL42

Keyword : Coal, net present value,ultimate open pit limit, strip ratio , yang harus dikupas sebesar 27441225 bcm dan break even strip ratio 12,92 ban/ton...

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Stripping ratio - Wikipedia

In mining, stripping ratio or strip ratio refers to the ratio of the volume of overburden (or waste material) required to be handled in order to extract some tonnage of....

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Stripping Ratios, Pit Limits & Cutoff Grade Optimization ,

Break-even stripping ratio: The instantaneous stripping ratio at the point where the cost of stripping the waste exactly equals the value of the ore uncovered...

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