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### Stripping Ratios, Pit Limits & Cutoff Grade Optimization

CHAPTER 8 Stripping Ratios, Pit Limits & Cutoff Grade Optimization Dr. Teuku Andika R Putra USM 2014 Stripping Ratios The stripping

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Feb 02, 2018 · What Is a Stripping Ratio? The stripping ratio method of calculating the profitability of the mining procedure is commonly used in the ore or coal

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Stripping Ratio(s) - Surface Mining | COAL MINING AND Types and definitions; What does a SR measure? What to use the SR for? On Terminology.

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In strip coal mining operations, the following are sometimes seen: Overbuden Thickness (ft) Overburden (yd 3 ) SR = SR = Coal Thickness (ft) Coal (tons) Stripping Ratios Instantaneous stripping ratio: The stripping ratio for a given push back Overall stripping ratio: The stripping ratio for the total amount of material removed.

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This process continues along parallel strips of land so long as the ratio between the overburden and the coal seam, called the stripping ratio, makes it economically feasible to recover coal. Mining may cease in a particular area, for example, where the coal seam becomes thinner or where the seam dips further below the surface.

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Coal mining - Wikipedia, the free encyclopedia The goal of coal mining is to obtain coal from the ground. When the operation reaches a predetermined stripping ratio

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Stripping ratio coal mining Stripping Ratios for Area Strip Mines.ppt used in the ore or coal mining process. The stripping ratio is important

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Stripping ratio - Wikipedia, the free encyclopedia. In mining, stripping ratio or strip ratio refers to the ratio of the volume of overburden COAL MINING AND

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### 1 4 Stripping Ratio | Ratio | Surface Mining - Scribd

calculate various stripping ratios for given situations (C, Ap) 3. explain the influence of stripping ratios on planning decisions (A, S) 4. assess the most economic method of mineability of a deposit by surface mining or underground mining from the limiting stripping ratio (A, S, E) 1.4 Stripping Ratio Stripping ratio is defined as the ratio of the

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