Environmental hazards: Water contaminated by mine tailings threatens nearby communities and destroys habitats.

Old mine tailings are present in the Rocky Mountain landscape.

The ore excavation process generated tons of waste rock and mine tailings.

Ecological factors, especially pollution of water by mine tailings, is a major source of concern.

Freeport McMoran officials deny that the mine tailings are toxic.

There is extensive mine tailings around this mine.

Ms Kirkland never visited the town, and the lake that bore her name no longer exists because of mine tailings.

There was a little settlement there that dispersed when the area was covered by mine tailings.

The company strongly denies the mine tailings are toxic.

He would take it out among the mine tailings and fire clip after clip, lead thudding into lead.