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35 Arrested In Winona Fracking Protests

More than 30 people were arrested Monday morning in what was the largest protest so far against the controversial practice of frac sand mining. Opponents say they have environmental concerns about frac sand, which is used by oil and gas drilling companies. WCCO's John Lauritsen shows us how widespread this issue has become, and what's at stake for both sides (2:08).

WCCO 4 News At 10 – April 29, 2013