Last Updated:2025/11/22
Sentence

屋根崩落が起きる前、鉱夫たちは上部の塊を制御して落とすために炭層の下部切り取りを慎重に行っていた。

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Before the roof collapse, the miners relied on careful holing to undercut the coal seam and bring down the upper mass in a controlled manner.

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Before the roof collapse, the miners relied on careful holing to undercut the coal seam and bring down the upper mass in a controlled manner.

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Related words

holing

Noun
Japanese Meaning
採掘において、石炭層の床を下方から掘削し、上にある岩塊や石炭塊を崩落させるための作業
What is this buttons?

屋根崩落が起きる前、鉱夫たちは上部の塊を制御して落とすために炭層の下部切り取りを慎重に行っていた。

Related Words

plural

English - English

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