For larger rounds, which method should be used instead of lighting each hole individually?

• A. Igniter cord and beanhole connectors
• B. Electric detonators
• C. Wireless blasting devices
• D. Primer charges

Answer: (A)

For large blasts, you want to spread initiation energy to many holes efficiently from one source. Using igniter cord laid through the blast pattern and beanhole connectors lets a single surface lighting point activate all holes along the line. The igniter cord runs into each hole via the connectors, so you don’t have to light every hole separately, which speeds up the process and reduces the handling of multiple fuzes. This setup also helps achieve coordinated, near-simultaneous detonation across a large round, which is harder to achieve when lighting each hole individually.

Electric detonators or wireless blasting devices would require separate initiation for each hole (with wiring or radios), adding complexity and equipment needs. Primer charges are the actual charges in the holes and don’t provide a single, shared initiation path like the fuse-and-connector method.