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The viability of mining Hoskissons Coal Seam on the "Sunnyside" property is determined by two main economic factors. ... The Overburden to Coal Stripping Ratio

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The economic stripping ratio used to define an economic mining block in an open pit coal mining situation is rationalised by considering the time value of money, and ...

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An example would be a strip ratio of 6:1 and a pure open pit cost of $4/tonne. Strip itself is easily understood in coal mining where you may have 20 metres of

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In coal mining what is a good strip ratio - Wiki Answers What Is Stripping Ratio? a. Measures relative deposit depth. Q: How important is depth in surface mining?

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contents 1 introduction to surface strip coal mining 1.1 fundamental concepts and definitions 2 1.2 surface coal mining 5 1.3 production cost and stripping ratio