Photos of the third and fourth explosions at the Pike River mine.

An Australian expert was arriving in Greymouth tonight to provide advice on the jet engine GAG operation at the ill-fated Pike River Coal mine, where it's "highly likely" part of a coal seam has caught fire.

Jim O'Donnell helped drag his dead mates out of the Strongman mine in a marathon rescue.

Families grieving after the Pike River disaster have called on a lawyer who rallied for victims in a previous West Coast disaster.

John Key will take a proposal for a Royal Commission of Inquiry into the Pike River mining disaster to Cabinet tomorrow.

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.

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.

Bells tolled and flags were lowered to half mast today to pay tribute to the 29 miners lost in the Pike River tragedy.

The family of Queenslander Willy Joynson want answers about why dangerous levels of gas were not detected before last Friday's blast.