Frac sand mining boom met with protest in Winona, Minn.
Published 03/11/2012, Grand Forks Herald
Winona has become the epicenter of a new Midwestern gold rush: frac sand mining. But as the boom spreads, from western Wisconsin to Mankato to Shakopee, it is igniting a debate over sand mining and the larger industry it serves -- the controversial oil and gas drilling practice called hydro-fracking.Word count: 1650
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