Metals
Dissolved metals in mine water are coming under increasing regulatory scrutiny. Regulations are evolving to include: stricter limits; constituents not previously regulated; and more mine sites subject to regulation.

Dissolved metals in mine water are coming under increasing regulatory scrutiny. Regulations are evolving to include: stricter limits; constituents not previously regulated; and more mine sites subject to regulation.
Sulphate is a common by-product from mining activities. Coal and most metals are recovered from ore bodies containing sulphur based minerals that oxidize to sulphate when exposed to air.
Growing awareness of the environmental impact of selenium has resulted in selenium removal becoming an important issue for mining operations.
Cyanide leaching is widely used to extract gold from ore. This process is negatively impacted by the presence of cyanide-soluble base metals such as copper and zinc.
June 2022
January 2018
October 2017
August 2017
September 2016