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As part of National Safety Month this June, the ISEE is highlighting important safety practices for explosives industry professionals. This week, industry veteran Richard O'Meara shares three critical elements that can help make sure your next blast is free from flyrock, a dangerous and potentially deadly hazard.
1. Drilling Log Review
Always review the drill log with the driller before loading the blast. Understanding any issues that were encountered during drilling, such as broken material at the surface, intersections with voids or soft seams, or holes drilled differently than planned, is crucial. This information enables the blaster in charge to load the explosives safely and efficiently. Skipping this review can result in missed subsurface issues that impact blast performance and safety.
2. Confinement
Explosives must be properly confined with the correct burdens, spacing, and stemming depths. This ensures the appropriate powder or energy factor is achieved. Too much energy held back by too little rock is a clear recipe for flyrock and poses serious risks to personnel and equipment. Proper confinement helps control the energy release and protects people and property.
3. Communication
Effective communication is crucial on every blast site! It is the blasting crew's responsibility to keep the blaster in charge informed of any issues during loading. For example, flyrock can occur when a hole is overloaded or has insufficient burden, and if this is not communicated, corrective action cannot be taken. Escalating concerns and getting more eyes on the problem allows for timely decisions that help prevent injury, fatality, or equipment damage.
