Wellington - New Zealand police on Monday released the names of the 29 miners trapped in the Pike River coal mine on South Island's West Coast since Friday.
Rescue operation chief, Tasman District police area commander Gary Knowles told a press conference on Monday that the names and photos of the miners have been posted on the police website www.police.govt.nz.
One of the 29 miners trapped underground is a South African, the Department of International Relations and Co-operation (DIRCO) confirmed on Sunday.
The workers, who include 24 New Zealanders, two Australians, two British citizens and one South African, are believed to be trapped about 2km along the horizontal tunnel burrowed into the side of a mountain about 150 meters below the surface.
Knowles said after three days without contact, the situation remained "grave" but he said drilling at the site was continuing and progress was going well.
Knowles said the rescue team remained on standby and were looking at what sections of the mine they could enter first.
A robot could be used to go inside the tunnel when the opportunity arose, he said.
Testing of the gas levels in the mine was being carried out every half hour.
"We remain optimistic but at the end of the day this is a search and recovery operation. We are going to go in and do our best to bring these guys to out."
Pike River CEO Peter Whittall said the team drilling over night had done a "phenomenal job" and had reached 100 meters of the 162 meters they needed to drill to.
