New course is comming on July 2026
PETS Toolbox Calculator App
Our FREE app is now being used by the ATF during magazine inspections! Reduce your headaches with explosives magazine inventory. This app allows you to easily calculate the net explosive weight…
State Approved Classes for Blasters
Pennsylvania Underground Blasting Course: Industrial Mineral/Mine Opening License Renewal
Complete continuing education requirements to renew your Underground Industrial Mineral and Mine Opening License. This class is approved for 8-hours of continuing education by the State of Pennsylvania Department of…
Colorado Explosive Permit Renewal Course – Register Now!
As a reminder, every 3 years your permit must be renewed with either 16-hours of approved continuing education or re-taking the state exam. Petr Explosives Group is offering our Practical…
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