Last Updated:2025/12/04

The crew halted drilling when a sudden nip-out ahead reduced the coal seam to nearly nothing.

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The crew halted drilling when a sudden nip-out ahead reduced the coal seam to nearly nothing.

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作業班は、前方で屋根と底板が接近して石炭層がほとんど消失する層の消尽が発生したため、掘削を中止した。

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