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About 1 .5 lb of copper for every 1000 lbs rock PowerPoint Presentation
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About 1 .5 lb of copper for every 1000 lbs rock

About 1 .5 lb of copper for every 1000 lbs rock

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About 1 .5 lb of copper for every 1000 lbs rock

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  1. About 1 .5 lb of copper for every 1000 lbs rock

  2. tailings ore

  3. The concentrating and smelting process adds a whole other layer of environmental problems.

  4. But first….. The earth that is moved to get the ore tailings

  5. Mining changes the landscape

  6. 1985 Butte Montana in 1942

  7. Underground mining was the first type of industrialized mining in Butte

  8. June 8th, 1917 underground fire took 168 lives, the nation's worst hard rock mining disaster.

  9. Then came open pit mining….And the pits

  10. NASA image

  11. Angela Brown

  12. Arsenic and other heavy metals, including copper, zinc, cadmium and lead.

  13. Tailings pond look like mountain lakes from afar but have same heavy metals

  14. The concentrating and smelting process adds a whole other layer of environmental problems.

  15. Silver Bow Creek was used as a conduit for mining, smelting, industrial and municipal wastes for more than a hundred years. Vast mine tailings deposits are found along the creek. These deposits contain elevated levels of metals and have been dispersed over the entire flood plain.

  16. Cool Water Hula