Man Door Pressure Release
| Old Way: | Opening a man-door between entries when pressure differentials exist often requires a great amount of force on the hand, arms, and back. The is also a greater risk of slipping. |
| New Way: | Place a small window which can be slid open to relieve the pressure before opening the door. The door will then require much less force to open. It is important that this window be re-closed after use to ensure proper mine ventilation. |
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| Old Way | New Way |