Which statement best describes the safety impact of a non-electric detonating system?

• A. Eliminates all safety risks
• B. Requires no precautions
• C. Cannot be used with any other blasting methods
• D. Solves some safety problems but still require precautions

Answer: (D)

Non-electric detonating systems reduce certain safety risks by removing the possibility of stray electrical initiation and by improving timing reliability, which makes initiation safer in many situations. But they don’t eliminate all hazards—you still must follow strict handling, storage, transport, and blasting procedures, and maintain safety precautions on site. So the best statement is that these systems solve some safety problems but still require precautions. The other options are too absolute or inaccurate: no system can eliminate every risk, precautions are always needed, and non-electric systems can be used in combination with other blasting methods when properly planned.