Establishing fire hazard criteria in trolley haulage entries: a twenty year history of trolley-wire induced fires.

This US Bureau of Mines study is based on a review of US mine fire accidents that occurred from 1970 to 1989. The study found that the most prolific source of haulage entry fires was the inadvertent grounding of trolley wires. 15 out of 40 trolley wire fires resulted from not maintaining adequate clearance between the vehicle and the trolley wire. Several novel fire prevention and control ideas proposed include: discriminating power isolation devices, wire cutting devices, more accessible fire extinguishers, vehicle overcurrent protection, and vehicle fire supression.
This US Bureau of Mines study is based on a review of US mine fire accidents that occurred from 1970 to 1989. The study found that the most prolific source of haulage entry fires was the inadvertent grounding of trolley wires. 15 out of 40 trolley wire fires resulted from not maintaining adequate clearance between the vehicle and the trolley wire. Several novel fire prevention and control ideas proposed include: discriminating power isolation devices, wire cutting devices, more accessible fire extinguishers, vehicle overcurrent protection, and vehicle fire supression.