Mining Engineering Magazine April 2016 Pit lake water treatment assists with legacy acid rock drainage issue in anticipation of restart at Mt Todd Mine
A critical path component of the planned upgrades to the existing mine/milling facilities and infrastructure was the development of a cost effective treatment and dewatering program for the approximately 11 GL (2,900 million gal) of ARD stored in the Batman Pit (RP3), which has a maximum capacity of approximately 12 GL (3,200 million gal). The Batman Pit must be dewatered in order for Vista Gold to restart mining activities.
The Batman Pit Lake had reached a maximum water depth of 104 m (341 ft) when Vista Gold initiated water level monitoring. It is important to note that the ARD water in the Batman Pit has been pumped into it from 2000 to 2012 under an NT government-approved environmental control program.
The Batman Pit has virtually no connection to the local ground water regime due to the intensive silicification that accompanied the mineralizing event.
Media Release: Mt Todd March Open Day 18 March 2015
Vista Gold will hold a Community Open Day on Saturday, 28 March 2015 at the Mt Todd Gold Mine 50 kilometers north of Katherine.
Brent Murdoch, Vista Gold Director and General Manager Australia, said that the community had been very receptive to the mine at a number of public events and that the wet season is the best time to come and see what we do at Mt Todd.
“Mining is such a significant part of our history and future in Australia, every-one loves a gold mining story. The Mt Todd mine is particularly significant to the people of Katherine and Pine Creek so we welcome them to come in and have a look at how we are managing the site,” he said.