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From bottom right, a conveyor carries sand from the crushing area to a wash plant tower to be washed and sorted by grain size at the Preferred Sands plant in Blair, Wis., on June 20, 2012. Lukas Keapproth/Wisconsin Center for Investigative Journalism Credit: Lukas Keapproth / WCIJ

Last week came a new report that attempts to take earlier economic impact analyses of the frac sand industry down a peg or two. Read the story, by our frac sand beat reporter Kate Prengaman.

While you’re at it, check out — and bookmark — our newly designed frac sand project page.

There, you’ll find a much-requested new update to our frac sand map, along with a downloadable list of sites, produced by Prengaman.

It also has links to all of our frac sand coverage, explainers, reports, videos and photos.

Got a frac sand lead? Send tips to Kate Prengaman: kprengaman@wisconsinwatch.org. Or tweet @kprengaman.

The nonprofit Wisconsin Center for Investigative Journalism (www.WisconsinWatch.org) collaborates with Wisconsin Public Radio, Wisconsin Public Television, other news media and the UW-Madison School of Journalism and Mass Communication. All works created, published, posted or disseminated by the Center do not necessarily reflect the views or opinions of UW-Madison or any of its affiliates.

Republish our articles for free, online or in print, under a Creative Commons license.

Kate Golden, multimedia director and reporter, specializes in environmental stories and data visualizations.