オープンカット

noun

open-cut; open cut

Primarily used in mining and civil engineering to refer to open-cut mining or open-cut excavation methods. Also appears in contexts like open-cut drainage or open-cut construction.

• この鉱こう山ざんではオープンカット採さい掘くつが行おこなわれている。

  Open-cut mining is carried out at this mine.

• オープンカット工こう法ほうは、地ち表ひょうから直ちょく接せつ掘ほり下さげる方ほう法ほうです。

  The open-cut method is a technique of excavating directly from the surface.