Underground magazines shall not be located within how many meters from the blasting area?

Underground magazines shall not be located within how many meters from the blasting area?

• A. 25
• B. 50
• C. 75
• D. 100

Answer: (B)

Keeping magazines away from the blasting area is essential to prevent accidental initiation and protect workers from blast effects. The minimum safe distance underground is 50 meters. This buffer reduces the risk that blast overpressure, flying fragments, heat, or fumes could reach the stored explosives or the magazine itself, even in the event of a misfire or stray initiation. It also allows safer handling and reduces the chance that equipment or ventilation could transfer ignition sources to the storage area. Distances smaller than this would increase the likelihood of a dangerous interaction between blasting and storage, while larger distances aren’t typically required as a minimum safety standard.

Keeping magazines away from the blasting area is essential to prevent accidental initiation and protect workers from blast effects. The minimum safe distance underground is 50 meters. This buffer reduces the risk that blast overpressure, flying fragments, heat, or fumes could reach the stored explosives or the magazine itself, even in the event of a misfire or stray initiation. It also allows safer handling and reduces the chance that equipment or ventilation could transfer ignition sources to the storage area. Distances smaller than this would increase the likelihood of a dangerous interaction between blasting and storage, while larger distances aren’t typically required as a minimum safety standard.