The battle for Minnesota’s $1 trillion mining jackpot

Aired: 5/10/2016 | 0:06:21 | Clip
Minnesota’s Arrowhead region sits atop a trove of precious metals: mining companies say the area holds four billion tons of raw material like copper and nickel, a haul worth $1 trillion. But local residents and activists are taking a stand against encroaching mining operations, citing the potentially disastrous environmental consequences. Josh Buettner of Iowa Public Television reports.