The Environment Court will reconvene tomorrow ahead of its final deliberations on whether to allow an open-cast mine to go ahead on the West Coast's Denniston Plateau.
Conservation group Forest & Bird and the Australian mining company Bathurst Resources will be at the court in Christchurch to argue their cases.
The court had indicated that the mine was likely to go ahead if conditions could be found that could appropriately mitigate environmental damage.
Last week Forest & Bird suffered a major setback with a High Court appeal being thrown out.
The environment watchdog was appealing against interim resource consent given to Bathurst Resources Limited for the 188ha open-cast mine on the plateau near Westport.