Blast Design

How to Estimate Blasting Mat Coverage and Required Mat Weight

We have many discussions in our Practical Explosives Training School (PETS) classes about how to calculate or/and/or estimate blasting mat coverage. One of the questions we hear most often from…

Why Are There So Many Burden and Spacing Methods in Blasting?

Understanding the Engineering Behind Blast Design Students entering the explosives industry are often surprised by the many formulas for calculating burden and spacing. American textbooks present one set of rules,…

Flyrock in Blasting: Causes, Calculations, and Practical Control Methods

Flyrock in Blasting: Causes, Calculations, and Practical Control Methods Flyrock is one of the most serious hazards associated with blasting operations. It occurs when fragments of rock are ejected outside…

Why and How We Use Inert Decking in Surface Blasting?

How to Calculate the Number of Drill Holes in a Blast (Using hole diameter or burden and spacing values)

A Practical Lesson from PETS Training During one of our Practical Explosives Training School (PETS) classes, we discussed blast design fundamentals and worked through several real-world blasting examples. During the…

Top 10 Mistakes New Blasters Make

Top 10 Mistakes New Blasters Make Practical Lessons from the Field Blasting is one of the most powerful and effective tools used in mining, construction, quarrying, and avalanche control. However,…