礦坑 kuangˋ kengˉ

(Mine, Mine shaft, Mineral, Mining)

Mineral mine, Mining operation, Mine shaft, Mine

坍塌 tanˉ taˉ

(Collapse, Structural)

Collapse, Structural failure

礦

Mine, Mineral, Ore

Mineral, Mine, Ore

坑

Pit

Pit

坍

Collapse, Landslide

Collapse, Landslide

塌

Collapse, Fail, Fall down

Collapse, Fail, Fall Down