New course is comming on July 2026
The 8 ms Rule: What It Really Means
The 8 ms Rule: What It Really Means – & Why It’s Time to Move Beyond It At Petr Explosives Group, we believe great blasting starts with understanding why we…
Row-to-Row vs. Hole-to-Hole Timing: Most Confused Concept in Blast Design
Row-to-Row vs. Hole-to-Hole Timing: The Most Important (and Most Confused) Concept in Blast Design Timing is one of the most critical factors in surface blasting — and also one of…
Timing in Surface Blasting: Understanding Control, Safety, and Efficiency
Timing in Surface Blasting: Understanding Control, Safety, and Efficiency We discussed with our students what to use for proper timing in our blast designs. We have different practical experiences and…
When Do You Need to Placard Your Truck?
When Do You Need to Placard Your Truck? A Practical Guide for Commercial Blasters Transporting Explosives and Detonators By Petr Explosives Group (PEG) In commercial blasting operations, transporting explosives and…
Why Some Detonators Are HD 1.1 and Others Are HD 1.4
Detonators and Squibs in Mining: Why Some Are HD 1.1 and Others Are HD 1.4 By Petr Explosives Group (PEG) In mining and blasting operations, detonators and squibs are fundamental…
What the Driller Should Report to the Blaster
What the Driller Should Report to the Blaster Why Drilling Data is Critical for Successful Blasting Operations In surface mining and quarrying, the drilling phase is much more than simply…
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