Virginia Code Title 45.2. Mines, Minerals, and Energy § 45.2-725. Explosives and blasting practices in shaft and slope operations

A. Every blasting area in a shaft or slope operation shall be covered with mats or materials when the excavations are too shallow to retain the blasted material.

B. If explosives are in the shaft or slope when an electrical storm approaches, every miner shall be removed from the working place until the storm has passed.