pillar extraction

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pillar extraction [′pil·ər ik′strak·shən]

(mining engineering)

Removal of the pillars of coal left over from mining by the pillar-and-stall method. Also known as pillar mining.

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No references found			Mitigating the risk associated with underground coal pillar extraction in South Africa // Mining Technology. Geological aspects of risk management in oil shale mining by Sabanov, S.; Tohver, T.; Vali, E.; Nikitin, O.; Pastarus, J.-R. / Oil Shale Now UK Coal bosses are hoping that the revised bid - which takes into account 70 redundancies at the pit and the axing of loss-making bord and pillar extraction operations - will secure a bigger slice of the state aid cake. Bosses in new bid to save last mine by The Journal (Newcastle, England) Mitigating the risk associated with underground coal pillar extraction in South Africa // Mining Technology. Application of the risk assessment methods of railway transport in ... by Pastarus, J.-R.; Sabanov, S.; Tohver, T. / Oil Shale			Piliavtsy Pilibhit Pilica Pilidae Pilidium pilier pilier cantonne pilier cantonné Pilifera Pilikhina, Margarita Pilikhina, Margarita Mikhailovna piling piling pipe Pilipino language Piliugin, Nikolai Piliugin, Nikolai Alekseevich Pill pill bug Pillar pillar and cord pillar bolt pillar buoy pillar burst pillar crane pillar drive pillar extraction pillar ladder pillar line pillar man pillar mining pillar of cloud, pillar of fire pillar piscina pillar press pillar robbing pillar split pillar-and-breast system pillar-and-room system pillar-and-stall system pillar-stone pillarbox pillaring Pillars of Hercules Pillau pillbox pillbox antenna Pillersdorf, Franz pilling Pillnitz Pillnitz, Declaration of 1791 pillory Pillot, Jean Jacques			pillaging Pillai Pillaiyar Pillaiyar Pillan Pillan Pillan Pillan pillar pillar pillar pillar pillar pillar and cord pillar block pillar bolt pillar box Pillar box (film) pillar boxes pillar buoy pillar burst Pillar candle Pillar candle Pillar candle pillar cells pillar cells pillar cells pillar cells pillar crane pillar drive pillar extraction pillar ladder pillar line pillar man pillar mining Pillar New Testament Commentary pillar of cloud, pillar of fire Pillar of Fire pillar of Islam Pillar of Love Fellowship Church pillar of strength pillar of strength pillar of strength pillar of strength pillar of strength pillar of strength pillar of support Pillar of Truth Bible Institute pillar piscina Pillar Point Valley Landfill pillar press Pillar procedure Pillar procedure Pillar procedure pillar reins pillar reins pillar reins pillar reins pillar robbing Pillar Rock, New Zealand Pillar Rock, New Zealand

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