... certificates FD-50-200D mining exploder is a power switching devices, which is used to detonate electric detonators, ... waste, high power, can be worked under those mine well which is in danger of ... methane, gas, etc. The control, units comes in lockable aluminium box, lightweight . Ithas a ... withourtany fear of safety / short sparking etc.A lightweight & compact system, Lockable type ABS ...