Grey District Mayor Tony Kokshoorn wants the mining industry to learn from past mistakes and has called for a royal inquiry.

Heroism probably involves an instant calculation of known risk against likely benefit.

The face of the country's worst mining disaster since 1914, Pike River CEO Peter Whittall, has fronted in the most trying of circumstances.

Experts suggest a split-second gas outburst may have overwhelmed the Pike River miners before they could respond to any alarms.

Superintendent Gary Knowles has been at the helm of the Pike River disaster, unable to provide answers to the questions the world wanted answered. Next, delivering news no one wanted to hear.

"We pray that their moment of fear becomes eternal peace," said Monsignor Gerry O'Connor during an emotional tribute to the Pike River miners in Greymouth.

Families of the dead men due to be bused to the Pike River mine tomorrow will still go, despite a third explosion at the mine this afternoon.

There has been a third explosion at the Pike River mine this afternoon. The blast occurred at 3.39pm and lasted for 23 seconds.

As the West Coast struggles with the emotional cost of the Pike River tragedy, chairman John Dow has reassured the community there is still a future for the mine and the company.

A third robot that has gone 1575m into the Pike River coal mine has detected debris and destruction indicating Wednesday's blast was much more violent than the first one.

Check times of church services for the miners, and tell us about services in your area.

It is likely to be several more days before operations will start to stabilise the Pike River mine so that the bodies of 29 men can recovered, police say.

A Pike River Relief Fund Trust has been established for the families of the 29 men who died in the Pike River coal mine.

A small West Coast community will now face the task of recovering and rebuilding following a disaster of devastating proportions.

International experts say they are shocked a mining disaster the magnitude of the Pike River tragedy occurred in a modern mine.

Liquid nitrogen could be used to stabilise the situation in the Pike River mine, experts told the Science Media Centre.

Mines Rescue workers who wanted to save 29 men trapped underground in the Pike River coal mine remain united in their desire to get their brothers back, their leader says.

A large jet engine which stabilises gases may be used to quench the fire in the Pike River coal mine so that rescuers can safely recover the bodies of 29 men inside.

NZ is a nation in mourning as memorial services are held, condolence books arranged, and candles lit throughout the country.

He has to accept he has lost a son. But Marty Palmer won't give up until his son's body is back with the family so they can mourn properly.

The ACC will ensure money is the least of the worries for the families of the Pike River 29, says ACC Minister Nick Smith.