A Hidden Source of Metal-Mining Emissions Could Be 10x Larger Than Estimated

The first comprehensive peer-reviewed academic assessment of CO2 emissions from neutralizing acid mine drainage in metal mining produced a startling result. Long after a metal mine stops operating, exposed minerals can continue reacting with water and releasing carbon dioxide for centuries or even millennia. Those emissions are rarely included in conventional mining carbon footprints, but [...]

from SciTechDaily https://ift.tt/pTlbhsK