Surface Environment, Mine Ventilation and Underground Hazards · Underground Hazards · 1 mark · Multiple choice
Under CMR 2017, a geared winding engine has its manwinding cage at the normal shaft-top position. What minimum space in metres is required from the detaching-hook rope-shackle hole centre to the detaching bell or plate?
CMR 2017 regulation 83(8) specifies 1.8 m for a geared engine and 3.6 m for a direct-acting engine. The question specifies geared winding, so choose C. This is the named historical regulation’s distinction, not the separate overrun requirement for a shaft being sunk.