Hopes of recovering bodies are fast fading for families of the 29 miners lost in 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.

The chief executive of Pike River mine says the families of the 29 victims of the disaster are coming to terms with the fact they may not get their loved ones back, as recovery efforts continue to be hindered.

Volunteers have been working "frantically" to prepare for Thursday's remembrance service to honour the 29 men who lost their lives in the Pike River Coal mine

Funds are continuing to pour in for the families of the 29 victims of the Pike River mine tragedy.

Deployment of the "GAG" unit at the Pike River coal mine has been delayed after a fire at the entrance to the mine this morning. Rescuers are trying to extinguish a coal fire so the bodies of 29 trapped men can be recovered.

Present and past Govt ministers are likely to come under scrutiny from the royal commission of inquiry into the Pike River mine tragedy.

Flames were last night shooting from the top of a 108m ventilation shaft at the Pike River coal mine - and only a couple of mountain peaks away a 43-year-old fire from the Strongman mine continues to billow smoke.

Families of the 29 men who died in the Pike River mine continue to be frustrated that the recovery of the bodies is still not underway as a massive fire, with flames shooting through a mine shaft, continues to burn.

The Royal Commission into the Pike River mine tragedy will be headed by High Court Judge Graham Panckhurst.

The Pike River Coal mine may have to be temporarily sealed after a fourth blast sent smoke and flames spewing from underground.

A royal commission of inquiry into the Pike River tragedy will look at causes of the blast and the initial response.

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.

Large amounts of smoke and flames are coming from the Pike River Coal mine after a fourth, powerful explosion today and boss Peter Whittall says it may have to be temporarily sealed.

The Prime Minister and Governor-General will speak at a memorial for the 29 men who died in the Pike River Coal mine.

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

The Pike River blast has led some miners to discuss whether it is safe to remain in the industry.