Clearly post personnel limits for the operation being conducted at each explosive operation location.

• A. Weather conditions
• B. Emergency exit routes
• C. Personnel limits
• D. Equipment service intervals

Answer: (C)

The key idea is controlling who is allowed in a given explosive operation area by clearly posted personnel limits. Having a posted limit for each location ensures there is a known, enforceable cap on how many people can be present, which supports safe supervision, clear communication, and quick, orderly evacuations if needed. It helps prevent crowding around the blast area, keeps the work within the site’s safety factors (like space, visibility, and supervision), and makes accountability straightforward so you can tally who is inside the area at any time.

Weather conditions, while important for deciding whether to proceed, do not set the occupancy limit. Emergency exit routes are essential for safe evacuation, but their existence doesn’t define how many people may be present. Equipment service intervals matter for maintenance and reliability, not for determining how many individuals can be in the operation area at once.