坑こう口こう

noun

pithead; mine entrance

Refers to the surface entrance of a mine or pit, including the surrounding facilities.

• 坑こう口こうから坑こう道どうに入はいる。

  Enter the mine tunnel from the pithead.

• 坑こう口こう付ふ近きんに選せん鉱こう場ばがある。

  There is an ore processing plant near the mine entrance.