Where should fire symbols be posted in buildings licensed for storing explosives?

• A. Exterior Entrances
• B. Interior Entrances
• C. Exterior Exits
• D. Exterior and Interior Entrances

Answer: (D)

Posting fire symbols at both exterior and interior entrances ensures the explosive hazard is clearly communicated from outside before anyone enters and again as people move through the inside. Exterior signage warns approaching personnel and visitors to anticipate a restricted area and follow safety controls, while interior signage keeps the warning in view for anyone entering or traversing the storage zone, reinforcing safe access, handling, and egress during an emergency. This dual placement provides continuous visibility of the hazard, helps prevent ignition sources from being brought into the area, and aligns with typical licensing requirements for storing explosives.