The government has been called on to release whatever evidence it has suggesting the blocked-off Pike River mine is unsafe to enter.

Anna Osborne, whose husband Milton was killed in the disaster at the mine that claimed 28 other lives, highlights that at least three experts believe it's safe to enter the drift of the mine - a 2.3km-long entry shaft - and retrieve the bodies.

She says the government is using the wrong terminology, making the task appear more dangerous in the public eye.

"[The government] keeps using the word 'mine' but it's actually the drift the families want to re-enter not the main workings of the mine," Osborne pointed out.

"We just want Bill English to sit round a table with our experts and family members and see if we can solve this because until that happens, the families aren't going to go away."

Yesterday, Environment Minister Nick Smith called the Labour Party's proposal to re-enter the mine "hypocritical and unsafe".

The proposal would remove the liability from the directors of mine owner, Solid Energy. The directors say all the evidence is that it is too risky to go into the potentially explosive methane-filled drift.