Former Pike River bosses are going to court on Monday to try to force the Pike River Royal Commission to resume to hear new evidence.
The commission has said it does not need to resume to hear in person from former mine technical staff member Udo Renk and middle managers Terry Moynihan and Greg Borichevsky.
The men had worked at the West Coast underground coal mine before it exploded in November, 2010, killing 29 of those working underground.
Stacey Shortall, the lawyer for former mine chief executive Peter Whittall and former company officers and directors, asked the commission to consider hearing from the men, after their evidence came to light after public hearings finished.
She is seeking a judicial review of the commission's decision.
She will also seek a review of the commission's rejection of her request to be able to see its findings before they are released, so she can seek suppression orders on adverse findings ahead of court appearances by Whittall.
Whittall is facing 12 health and safety charges laid by the then Department of Labour.
The commission was last week given a two-month extension to deliver its report because preparation for the judicial review application had diverted resources and delayed the drafting of its final report.
It will now report back by November 30, instead of September 28.
NZN