What is the minimum size required for shelter holes?

The minimum size required for shelter holes is 5 feet in depth and 4 feet in width. This standard is established to ensure that the shelter can adequately protect individuals in the event of a mine emergency, such as a collapse or hazardous gas release. A shelter hole of this size provides sufficient space for a person to take cover and minimizes the risk of injury during such incidents. The dimensions also take into consideration the need for air circulation and comfort, ensuring that individuals can remain in the shelter for a longer duration if necessary. The specifications reflect industry safety standards aimed at enhancing worker protection in mining operations.