TeachMeFinance.com - explain Room-and-pillar mining
Room-and-pillar mining The term 'Room-and-pillar mining' as it applies to the area of energy can be defined as ' The most common method of underground mining in which the mine roof is supported mainly by coal pillars left at regular intervals. Rooms are places where the coal is mined; pillars are areas of coal left between the rooms. Room-and-pillar mining is done either by conventional or continuous mining'.
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