The Mt Todd mine site is located approximately 50 km north of Katherine and 250 km south of Darwin. The site covers a mine tenement of more than 140,000 ha, which includes both the Batman and Quigleys gold deposits.
The site was acquired by Vista Gold and its wholly owned subsidiary Vista Gold Australia in 2006.
Currently not in production, Vista Gold is working with the authorities to obtain the necessary permits for the mine prior to making a final investment decision on the project.
A favourable investment decision could lead to a two-year construction phase employing approximately 450 people with an ongoing workforce of 350 during operations.
Vista Gold announced estimated mineral resources for the Mt Todd Gold Project on May 29, 2013 in the Mt Todd Gold Project Preliminary Feasibility Study (Batman Deposit and Heap Leach Pad) and on February 26, 2014 (update for the Quigleys Deposit) as follows:
Mt Todd Releasing Water 2016
Mt Todd commenced the annual wet season release of treated water 13th Jan-16 and ceased 16th Feb-16, in accordance with our Waste Discharge License (WDL178-4)
As there is now sufficient flow in the Edith River and more rain is forecast we are anticipating that the release of water will be the start of a significant reduction of the water inventory held at Mt Todd.
Water collection and storage is the biggest environmental issue facing the Mt Todd site.
Since the mine ceased operations in 2000, mine effected water has been collecting in the Tailings Storage facility (RP7) and the Waste Rock Dump Dam (RP1). As required this water has been pumped and stored in the Batman Pit (RP3).
Regardless of the when the mine goes ahead this water requires treatment and release from site as there is a net positive historical 1.5GL of water for Mt Todd Mine Site each year. Hence the need to release water each wet season.
Pictured is the water release point taken 13th Jan this year
The graph below shows both the rainfall and volume of water released 2016, No water was released in Dec-16;