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WCL mining sirdar question paper | wcl mining sirdar exam 2018 | MINING GURUKUL



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Coal is the official state mineral of Kentucky.


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About: WCL mining sirdar question paper | wcl mining sirdar exam 2018 | MINING GURUKUL


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Blasting cable and shotfiring cable both are same or not,
If same then length of shotfiring cable should be 75 meter in UG and 150 in OC mines.
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Coal stock


Coal is extracted from the ground by coal mining, either underground by shaft mining, or at ground level by open pit mining extraction.

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Coal is primarily used as a solid fuel to produce electricity and heat through combustion. World coal consumption was about 7.25 billion tonnes in 2010 The price of coal increased from around $30.00 per short ton in 2000 to around $150.00 per short ton as of September 2008. In early 2015, it was trading near $56/ton.