Longwall mining

Longwall mining

Longwall mining is a form of underground coal mining where a long wall of coal is mined in a single slice (typically 0.6–1.0 m (2 ft 0 in–3 ft 3 in) thick). The longwall panel (the block of coal that is being mined) is typically 3–4 km (1.9–2.5 mi) long and 250–400 m (820–1,310 ft) wide.
http://dbpedia.org/resource/Longwall_mining
Longwall_mining
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Longwall mining

Longwall mining is a form of underground coal mining where a long wall of coal is mined in a single slice (typically 0.6–1.0 m (2 ft 0 in–3 ft 3 in) thick). The longwall panel (the block of coal that is being mined) is typically 3–4 km (1.9–2.5 mi) long and 250–400 m (820–1,310 ft) wide.
http://dbpedia.org/resource/Longwall_mining
has abstract
L'exploitation de charbon en l ...... on, mais aussi du soutènement.
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Longwall mining is a form of u ...... 250–400 m (820–1,310 ft) wide.
@en
Långväggsbrytning eller linjeb ...... innas genom långväggsbrytning.
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Plan of longwall mine
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Missouri mine before conveyors, hoist protected in the central pillar
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Oklahoma advancing longwall mine c. 1917; arrows show airflow
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West Virginia retreating longwall mine c. 1917
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L'exploitation de charbon en l ...... on, mais aussi du soutènement.
@fr
Longwall mining is a form of u ...... 250–400 m (820–1,310 ft) wide.
@en
Långväggsbrytning eller linjeb ...... innas genom långväggsbrytning.
@sv
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Longue taille
@fr
Longwall mining
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Långväggsbrytning
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Strebbau
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