To clean accumulated material from a settling pond, mine operators can use draglines, excavators and haul trucks, but Jadair International says this process is tedious and costly, as excavating ...

The old mine's complex system of tunnels drain into 11 settling ponds designed to trap heavy metals such as cadmium, lead, zinc, arsenic, silver and copper. The ponds, visible from Colorado 145 just ...

with an additional 10 acre state mining claim for 64 acres, all selling as one. Excavating equipment, a processing plant and supporting infrastructure including tailing and settling ponds are in place ...

It prevents an uncontrolled release of water from the former mine. The treatment plant is behind the borough’s salt shed off Renton Road, with a settling pond stretching along Old Mine Road to ...