open cast coal mining cost per ton

Glossary of Mining Terms Abutment — In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the back abutment, . Coal The increase in sales volumes was however reduced by the effects of a stronger Rand and lower US Dollar export coal prices. Cash costs per saleable tonne increased to R141.03 as the long-term cost per saleable tonne (which is used to determine the amount of working costs to be capitalised) was recalculated. Corsa Coal Announces Financial Results for Second . (1) This is a non-GAAP financial measure. See "Non-GAAP Financial Measures" below. (2) Similar to most U.S. metallurgical coal producers, Corsa reports sales and costs per ton on an FOB mine site ...    Read More

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