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Cleanup and redevelopment continue at former East Helena smelter

Cleanup has cut arsenic and selenium in groundwater by more than 50% since 2016, while officials study whether slag can yield critical minerals.

Summary by KTVH
Now, the Montana Environmental Trust Group is exploring whether the slag can be recycled for its critical minerals.

2 Articles

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KTVH broke the news on Wednesday, October 14, 2026.
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