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Longwall mining is a form of underground coal mining where a long single face of coal, known as a panel, is mined with a continuous cut across its entirety. Seams utilizing longwall panels are typically 4 - 20 ft thick. The panel is typically 10,000 - long, but can be up to 20,000 ft long and 1000 - 1500 ft wide. The longwall method compares with shortwall, room-and-pillar, and several others.

History

The basic idea of longwall

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