§ 57.8532 - Opening and closing ventilation doors.

Latest version.

§ 57.8532 Opening and closing ventilation doors.

When ventilation control doors are opened as a part of the normal mining cycle, they shall be closed as soon as possible to re-establish normal ventilation to working places.

                    
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§ 57.8532 - Opening and closing ventilation doors.

§ 57.8532 Opening and closing ventilation doors.