Keys to the Past

Glossary

Pillar and stall

sometimes called bord and pillar
A technique of coal mining used from the mid-15th century to the 19th century AD. Long parallel rows of coal were removed, (the stalls), to leave equally long parallel lines of coal supporting the rocks above the seam, (the pillars). This technique typically left about a third of the coal supporting the 'roof' of the workings.

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