Bord & Pillar Method • This stage of extraction of coal from the pillars or reduction Disadvantages of bord and pillar mining method • Ventilation is
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Get Pricemudstone and coal Dips vary considerably from horizontal to overturned Underground mining by room and pillar methods is restricted to areas where strata dip at
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Get PricePillar Extraction 8 Abstract Pillar extraction also referred to as retreat mining; pillar recovery; stooping; pillar robbing; and bord and pillar second workings
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Get PriceThe selection of process for mining the coal deposit is attributed to various parameters among those the important ones are In both of these methods the entire coal deposit is divided into pillars of definite dimension and is extracted following the particular sequence of extraction
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