Petr Explosives Blog

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,…

How to Register and Pay for PETS Classes Online

How to Register and Pay for PETS Classes Online Practical Explosives Training School (PETS), The Practical Explosives Training School (PETS) offers professional training programs for blasters, engineers, scientists, technicians, and…

Introduction to Loading Density in Blasting Using PetsTool Calculator

Introduction to Loading Density for Blasters How to Calculate It and Use the PETS Toolbox Calculator Loading Density (LD) is one of the most useful calculations in blast design. It…

Explosives R&D and Technical Support for Establishing Explosives Research Laboratories

What Laboratories Must Know About Regulatory Compliance and Scale-Up By Petr Explosives Group | Practical Explosives Training School (PETS) Research laboratories working with energetic materials in Colorado operate in a…

How to Log Explosives in Your Magazine 📦

How to Log Explosives in Your Magazine During Delivery and Daily Use Accurate explosive logging is not optional — it is a legal requirement and a core part of professional…