A Stuff article.
A risk assessment team has decided it would be too dangerous to put a camera down the compressed air line at the Pike River mine.
The police put cameras down three 300-millimetre pipes in the West Coast mine in January, but were unable to penetrate beyond the roof fall due to the extent of damage to each pipe.
A roof fall sits at the top of the 2.3-kilometre drift (or access tunnel), blocking access to the mine workings. The Pike River Recovery Agency has been tasked with recovering any evidence in the drift to find out what happened when 29 men died after the mine exploded in November 2010.
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