長ちょう壁へき式しき採さい炭たん

noun

longwall mining

A mining method where a long wall of coal is mined in a single slice. Technical term used in mining engineering.

• 長ちょう壁へき式しき採さい炭たんは、炭たん鉱こうで広ひろく使つかわれている採さい掘くつ方ほう法ほうの一ひとつです。

  Longwall mining is one of the widely used mining methods in coal mines.