The inner door of the main fan house on the ground of the coal mine must be a two way door, which is

Updated on Inner door 2024-07-14
2 answers
  1. Anonymous users2024-01-24

    Article 123 of the Coal Mine Safety Regulations prohibits the main ventilation room from being used for other purposes. There is no provision for double reverse doors.

  2. Anonymous users2024-01-23

    There is no such provision in the coal mine safety regulations, and it may be some local regulations.

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