Blasting operations shall not be conducted within how many feet of any public highway?

Blasting operations shall not be conducted within how many feet of any public highway?

• A. 400 feet
• B. 800 feet
• C. 1200 feet
• D. 1000 feet

Answer: (B)

The key idea is ensuring a safe setback from a public highway to protect motorists from blasting hazards such as flyrock and ground vibrations. Regulations require maintaining at least 800 feet between a blast and any public highway so debris and vibrations are unlikely to reach the road, reducing the risk of injury or damage to vehicles and people. A distance of 800 feet meets the standard minimum for this situation; 400 feet would be too close and not adequately protective, while 1000 or 1200 feet are larger than necessary for this rule (they might apply in other contexts or with additional controls), but they’re not the mandated minimum for blasting near a public highway.

The key idea is ensuring a safe setback from a public highway to protect motorists from blasting hazards such as flyrock and ground vibrations. Regulations require maintaining at least 800 feet between a blast and any public highway so debris and vibrations are unlikely to reach the road, reducing the risk of injury or damage to vehicles and people. A distance of 800 feet meets the standard minimum for this situation; 400 feet would be too close and not adequately protective, while 1000 or 1200 feet are larger than necessary for this rule (they might apply in other contexts or with additional controls), but they’re not the mandated minimum for blasting near a public highway.