Thousands have signed a petition against an Aussie company's bid to mine the fossil-rich Otago site.
The mine has a new seal, but plans on what to do next have not been finalised.
"We've known we are going back in for a year now, today it feels like it."
"Pulling that plug out is like pulling the cork out of a bottle."
It was originally scheduled for earlier this month.
"There would never have been a second explosion if the first one hadn't happened."
Ten big holes were today drilled through the outer wall in preparation.
The Government is doing nothing to stop it, despite reporting no economic benefits.
Activists are frustrated the policy is seeing little action.
"You can't undertake a mining operation without an element of risk."
The families are shocked a potentially vital piece of evidence into the explosion has gone missing.
Hundreds are feared dead - and the finger is being pointed at the greed of mining company Vale SA.
It's not to set up a military base, according to a Kiwi space expert.
The workers were trapped when an illegal mine was flooded.
A judge called Taharoa Ironsands' actions "careless".
One of the industry's most experienced people will be the families' eye underground.