Stoop and Room
a system of mining involving the excavation of a rectangular network of tunnels (rooms) retaining blocks or pillars of shale (stoops) to support the roof of the mine. Also known as Pillar and Stall working.
a system of mining involving the excavation of a rectangular network of tunnels (rooms) retaining blocks or pillars of shale (stoops) to support the roof of the mine. Also known as Pillar and Stall working.
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