Redbank is a Copper Mine located in the North-east corner of the Northern Territory just on the border with Queensland in the Gulf Country.
It ceased operations after 3 years mining in August 1996 due to falling copper prices. According to the Department of Mines and Energy website the mine is now on 'care and maintenance'. However photographs obtained recently suggest that contamination from the site is extending as far as 30 kilometres downstream of the mine and copper staining is occurring up to 15 km from the mine site.
In this case it seems that the NT Government again didn't want to decommission a mine and so left the door open to a future operator resuming mining. However the mine has been left to deteriorate over the past 5 years with copper poisoning spreading significantly downstream of the mine.
(source - ECNT)