Division 1.1 explosives have what hazard characteristic?

• A. A projection hazard but not a mass explosion hazard
• B. A fire hazard with minor blast or minor projectile or both, but no mass explosion hazard
• C. No hazard
• D. A negligible hazard confined to the package

Answer: (A)

Mass explosion hazard is what Division 1.1 explosives have. That means if these explosives detonate, the entire load can explode with enough energy to cause widespread blast effects, fragmentation, and damage over a large area. It’s not about projecting fragments from a single part of the package or a smaller, contained blast. This is different from a projection hazard, which is characteristic of Division 1.2, where fragments can be thrown but the whole load isn’t expected to explode as a mass. The other descriptions don’t match Division 1.1’s behavior, which is defined by the potential for a complete, immediate detonation of the entire quantity.