Investigators say gas accumulated during a power outage that shut down the mine's ventilationsystem.
调查人员说，由于断电，矿井内的通风设备停止运行，矿井内瓦斯积聚。
2
Police say a power cut is compromising the ventilationsystem in the Pike River Coal Pit in a remote part of the country's South Island.
警方说，停电影响了该国南岛偏远地区的派克河煤矿矿井的通风系统。
3
Power company officials say a ventilationsystem has lowered radiation levels in the reactor building damaged in March by a massive earthquake and tsunami.