Where must all locally written explosive safety instructions be available?

• A. The office
• B. In the vehicle
• C. On the shop floor
• D. The work site

Answer: (D)

The main idea is that locally written explosive safety instructions must be accessible where the work actually happens. Having them at the work site ensures that anyone performing or supervising blasting or explosive-related tasks can immediately reference the procedures right before and during operations, and in any emergencies. This immediacy helps ensure the instructions are followed correctly and stay current with site-specific conditions. If the instructions were kept only in an office or put in a vehicle, workers might not have easy access when they need them, which could lead to delays or unsafe decisions. While the shop floor is part of the operational area, the requirement emphasizes availability at the location where work occurs, i.e., the work site, so the guidance is always within reach during the task.