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Blasting safely with proper techniques - miningquiz. com According to federal law even if you are granted a waiver, 300 feet is the absolute minimum distance you can mine from structures that are not operator-owned If you blast closer than 300 feet to a structure or pipeline of the types mentioned in the regulations, you are violating federal law
Geologic Effects on Blast Performance - IN. gov Note: this reproduction is from a digital camera * 1 08 yards = 1 meter = 3 25 feet * Blasting is done to break rocks When the explosive is properly confined the explosive energy is focused on the burden Bury a charge deeply – mostly ground vibrations Bury a charge shallow – airblast and flyrock The goal is to be somewhere in between
This presentation is for illustrative and general educational . . . Root Cause: The mine operator did not maintain safe control of the mining pit Fly rock from the mining pit traveled more than 1500 feet to a staging area where equipment was being fueled and routine service was being performed
MINE HAZARD TRAINING FOR TRUCKERS - miningquiz. com Entering Mine Property All persons must comply with Federal mine safety laws and regulations You must be made aware of hazards related to outside truckers at mine sites
Using machine learning, experimental observations, and . . . Blasting Sub-Problems: Non-ideal detonation, crushing, fracturing, vibrations, damage, burden movement, fly-rock, gas flow, and fumes Crushed Zone Near the blasthole, the explosive induces compressive stresses that are well beyond the strength of the rock leading to the development of a crushed zone
PowerPoint Presentation Developed Guideline for the Compilation of a Mandatory Code of Practice for Minimum Standards on Ground Vibration, Noise, Airblast and Flyrock near Surface Structures and Communities to be Protected