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bord and pillar mining india - jongleerdam.nl Most of the bord and pillar method of coal mining has been done in depth range less than300 m as at greater depths pillars experience crush. However, in India in some cases thedepth of mining for bord and pillar method has been around 600 m, though mining at such

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Bord And Pillar Mining prm China Most coal seams are too deep underground for opencast mining and require undergroundmining, which method currently accounts for about 60 of world coal production.11 in deepmining, the room and pillar or bord and pillar method progresses along the seam, while

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Production By Bord And Pillar India - EXART In India, a number of opencast mines are being worked over the coal pillars developed byunderground bord and pillar method of mining. In these cases, the fires have occurred inmost of these opencast mines causing loss of the coal reserve, production, productivity

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bord and pillar mining at impala - devogelvriendennederweert.nl Bord-and-pillar mining was then compared to conven-tional mining according to thefollowing: financial analysis, dilution and flexibility. Bord and Pillar mining bycontinuous Miner in HINDI YouTube Jul 29, 2016· Bord and pillar is an underground mining

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