Definition of longwall in English:



  • Of or involving a single long face worked (usually mechanically) along its whole length.

    ‘longwall mining’
    • ‘A single longwall path can stretch for two miles, causing everything on the surface directly above it to collapse.’
    • ‘In 1976, Old Ben Coal Co., with Federal assistance, began a trial of modern mechanized longwall mining in a new area of their No.24 mine in the Herrin Coal seam.’
    • ‘In lucid terms, Booth first elaborates the mechanisms and impacts of the hydrogeological response to longwall mining.’
    • ‘Between 1983 and 1998, as Pennsylvania replaced most traditional underground mining with longwall mining, the state's coal production increased by 64% while the number of coal miners fell by 81%.’
    • ‘The three main underground mining methods are stoping, room-and-pillar mining, and longwall mining.’