But the old mines also left behind a legacy of trouble for today’s Westerners. Abandoned mines dot the Western landscape, polluting the region’s streams with acid mine drainage and connecting the ...

In 1848 the first of these old mines was discovered, and in it was found a mass ot pure copper, weighing six tons, which had been raised by ancient wedges, and rolled along the gallery.

And if and when these old mines are cleaned up, the cost burden usually falls on the American public. Even more disconcerting is the toxic legacy left on public lands and sacred American Indian sites.

AGL's Muswellbrook Pumped Hydro project aims to create a 400MW facility at a former coal mine, offering 8 hours of storage and receiving backing from Idemitsu Australia. The project has undergone ...