Waihi mine rehabilitation – exciting economic  opportunities Plans for the rehabilitation and re-purposing of the ‘Martha’ gold mine located in Waihi, New Zealand are inevitably raised in the period leading up to the end of the operators licence. It was last broached around 2006 before Oceana Gold secured another license to operate the mine.  ​ The prospect of the mine closing generates considerable public discussion about the possibilities for re-purposing the open cast