Mining for heat
Underground mining is a sweaty job, and not just because of the hard work it takes to haul ore: Mining tunnels fill with heat naturally emitted from the surrounding rock. A group of researchers from McGill University in Canada ...
Geothermal power could be solution for Indiana's abandoned coal mines
(PhysOrg.com) -- Vacant coal mines in southwest Indiana could once again generate energy, not from coal, but from the water reservoirs now found on their surface and deep underground.