Where should personnel limits be posted for an explosive operation?

• A. Break room wall
• B. At the explosive operation location
• C. In the control room
• D. In the vehicle logbook

Answer: (B)

Posting personnel limits at the explosive operation location ensures visibility exactly where the work is happening, so everyone entering or working in the blast area can see and adhere to the limit in real time. If the limit is posted in a break room, control room, or vehicle logbook, it may not be readily seen by those in and around the operation, and changes to the limit could be missed, leading to safety breaches. Keeping the limit at the location supports immediate verification by supervisors and helps enforce safe staffing throughout the operation.