(GREYMOUTH, New Zealand) -- It's still too dangerous for rescuers to try to reach 29 missing miners in New Zealand.
The New Zealand Herald reports that gas levels inside the mine are trending down, but continue to fluctuate. Testing will indicate whether it's safe for rescue teams to enter the mine. Experts fear high levels of gas could trigger another explosion.
The miners -- who have yet to be heard from -- have been trapped since Friday.
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