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үзілу желісі

A line above which the roof of a coal mine is expected to break. It follows the rear edge of the pillars.

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  • Part of Speech: noun
  • Synonym(s):
  • Blossary:
  • Industry/Domain: Energy
  • Category: Coal
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тосқауыл
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желінің үзілуі
Energy; Coal

An opening that is made through pillars that allows for ventilation.

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