How far must powder boxes or magazines be kept from the blasted face?

The requirement for keeping powder boxes or magazines at least 100 feet away from the blasted face is stipulated for safety reasons. This distance is designed to protect personnel and equipment from the potential hazards associated with blasting operations.

Blasting creates shocks, vibrations, and flying debris, which can be dangerous to anyone or anything in close proximity. By maintaining a distance of 100 feet, the risk of injury from these hazards is significantly reduced. Additionally, separating explosive materials from the blasting area helps prevent accidental detonation and ensures a safer work environment during blasting activities.

This safety regulation is established in order to comply with industry standards and best practices, which prioritize the protection of workers, equipment, and the surrounding environment during blasting operations. Hence, 100 feet is the standard distance required to ensure that safety measures are effectively implemented.