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to learn more. the Good morning. I'm Jane Pauly and this is Sunday morning. There's gold in the

hills surrounding Butte, Montana, gold, silver, and especially copper.

Starting way back in the 1860s, those riches lured thousands of workers

who dug up and mined the earth.

It made But as Luke Barbank will tell us, it left behind a problem, a toxic problem.

Montana is known for its big skies and big personalities.

And in the case of the town of Butte, the biggest superfund site in the country.

...