A Toronto environmental company is cleaning up a toxic Manitoba mine site at no cost to taxpayers. Its compensation? It gets to keep any gold it can extract from a stockpile of arsenopyrite concentrate.
“As the price of gold and copper began to rise, we realized the possibility for extracting value from mine tailings,” says Ross Orr, president and CEO of BacTech Environmental Corporation.
The company is employing bioleaching technology, which uses microbes to extract valuable metals from undesirable materials.
“Bacteria digest the sulphides to break up the matrix of the tailings materials,” says Orr. “The arsenic and iron go into the solution and the precious metals go into a precipitate for which we can use conventional extraction methods.”
While the technology isn’t new, the application is. The plant would be the world’s first bioleaching facility for the remediation of toxic material. The company initially met with some resistance, however, when it presented its ideas under its other banner, mining firm REBgold Corporation.