NZ mine bore hole shows high gas levels (BBC)

[eppur_se_muova]

Rescuers trying to reach 29 men trapped in a New Zealand coal mine say a bore hole has shown high gas levels and little oxygen near where the men are believed to be.

Police Supt Gary Knowles, co-ordinating the rescue effort, said it was still not safe to send in rescue teams.

Two robots have been sent into the mine and a third is on its way, a news conference was told.

There has been no contact with the miners since an explosion on Friday.

Supt Knowles said air samples from the bore hole showed high levels of carbon monoxide and methane and low levels of oxygen.
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more: http://www.bbc.co.uk/news/world-asia-pacific-11825792

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