mining stripping encyclopedia

  • Strip Mining Encyclopediacom

    Area mining Meleen found produced far more benign impacts than did contour stripping. The worst conditions were encountered where contour mining was adjacent to streams below especially around the end of ridges. The short distances and relatively steep gradients gave ideal conditions for sediment and acid drainage into the channels below

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  • Stripping ratio

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  • Strip mining Encyclopedia Britannica

    The common stripmining techniques are classified as area mining or contour mining on the basis of the deposit geometry and type. The cycle of operations for both techniques consists of vegetation clearing soil removal drilling and blasting of overburden (if needed) stripping removal of the coal or other mineral commodity and reclamation.

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  • Mining

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  • Mining Britannica

    Large stripping machines with excavating wheels used in surface coal mining are employed in other types of openpit mines. Water inflow was a very important problem in underground mining until James Watt invented the steam engine in the 18th century. After that steamdriven pumps could be used to remove water from the deep mines of the day.

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  • what is stripping ratio coal mining

    Stripping ratio the free encyclopedia In mining stripping ratio or strip ratio refers to the ratio of the volume of overburden (or waste material) required to

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  • Overburden stripping works «Mining Encyclopedia»

    The expenditures per unit for the miningcapital overburden stripping works are usually more than for the mining works during the period of the operation of the openpit mine. The redemption of the capital expenditures is performed according to the socalled rate per tonne.

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