N. Zealand-mining-explosion-methane
The explosive gas known as "fire damp" that has stalled the rescue of 29 men at a New Zealand colliery is a miner's worst nightmare, a former worker at the mine said Saturday.
The explosive gas known as "fire damp" that has stalled the rescue of 29 men at a New Zealand colliery is a miner's worst nightmare, a former worker at the mine said Saturday.
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