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I don't want to hit this too hard because you've already received many warnings re cad. I can tell you from first hand observation in a small Oklahoma town called Blackwell that cad is carcinogenic and one of the worst heavy metals there is. The incidence of cancer and cancer plus other respiratory related diseases and deaths was significantly above the national average for all the diseases and I assure you that a 400 foot smoke stack is not the norm just for smelting zinc. American Metals Climax was forced to shut down by the EPA and the entire area was placed on the mega spill list. There continue to be issue because of the leakage into ground water.....and that is now 75 years after operations began!
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