DESMOGBLOG — The rolling hills of northeastern Iowa’s Allamakee County defy the state’s stereotypical flat-land geography, and local residents boast of the serene beauty and rich geological history. Yet those same bluffs also play host to robust reservoirs of frac-sand …
[source: http://ecowatch.com/2013/iowa-fracking-industrys-frac-sand-target/]
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