Fiery Mines Blasting Certificate Exam Practice Questions - Fiery Mines Blasting Certificate Of Competency Examination (South Africa) Exam

Aluminium shells can react incendively with hot gases or rusted steel, creating high-temperature thermite-like sparks capable of igniting methane Copper detonator shells are completely non-magnetic and prevent static electricity build-up during pneumatic loading Aluminium detonators dissolve rapidly when exposed to acidic coal mine moisture, causing premature misfires Copper detonator shells produce higher electrical resistance, preventing leakage currents from firing the charge early