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 thick). The longwall panel (the block of coal that is being mined) is typically 3 – 4 km long and 250 – 400 m wide.
primaryTopic
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 thick). The longwall panel (the block of coal that is being mined) is typically 3 – 4 km long and 250 – 400 m wide.
has abstract
Der Strebbau ist ein bergbauli ...... ßlich der Strebbau angewendet.
@de
L'exploitation de charbon en l ...... on, mais aussi du soutènement.
@fr
Longwall mining is a form of u ...... km long and 250 – 400 m wide.
@en
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740,913,534
Alt
Plan of longwall mine
Caption
Missouri mine before conveyors, hoist protected in the central pillar
Oklahoma advancing longwall mine c. 1917; arrows show airflow
West Virginia retreating longwall mine c. 1917
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hypernym
comment
Der Strebbau ist ein bergbauli ...... ßlich der Strebbau angewendet.
@de
L'exploitation de charbon en l ...... on, mais aussi du soutènement.
@fr
Longwall mining is a form of u ...... km long and 250 – 400 m wide.
@en
label
Longue taille
@fr
Longwall mining
@en
Strebbau
@de
