In this undated photo provided by New Zealand Police, miner Allan John Dixon, 59, of Rununga, New Zealand poses before the camera. Dixon is one of 29 miners believed to be trapped in the Pike River Coal mine near Greymouth, New Zealand, following an explosion at the mine Friday Nov. 19, 2010. (AP Photo/New Zealand Police)

In this undated photo provided by New Zealand Police, miner Allan John Dixon, 59, of Rununga, New Zealand poses before the camera. Dixon is one of 29 miners believed to be trapped in the Pike River Coal mine near Greymouth, New Zealand, following an explosion at the mine Friday Nov. 19, 2010. (AP Photo/New Zealand Police)