Frac Sand Mining in the American Midwest - FracTracker Alliance
Frac sand: Wisconsin mines and plants - Wisconsin Watch
What makes a profitable sand mine site - Wisconsin Watch
When the Hills Are Gone — University of Minnesota Press
Minnesota, Wisconsin frac sand mines crushed by oil industry shifts
Living on the Front Lines with Silica Sand Mines - FracTracker Alliance
Frac Sand Mining & Water Recycling
Frac sand mining in WISconsin - Introduction
Sand Mining Emerges as Another Gas Fracking Threat in the U.S. - Inside Climate News
Fracking - Wikipedia
MPR News Primer: Frac sand mining | MPR News
Frac Sand Mining | Sierra Club
Wisconsin Geological & Natural History Survey » Frac sand: How is it mined?
Frac Sand Company Liquidating Western Wisconsin Mine | Wisconsin Public Radio
What is Frac Sand? And how is it used in fracking?
With Demand Increasing New Frac Sand Mines Are Set to Open
Frac Sand Mining - Earthworks
Frac sand mining: What are the alternatives? | MPR News
Frac Sand Mining in the American Midwest - FracTracker Alliance
Frac Sand Mining | Sierra Club
What is Frac Sand? And how is it used in fracking?
Fracking means Texas sand industry is booming and has gone mobile
Frac-sand foes say new oversight plan offers too little, and may be too late | MinnPost
What is frac sand? | American Geosciences Institute
Risks of Coal and Unconventional Gas Mining - Lock the Gate
The Price of Sand: New Documentary Exposes Dangers of Frac-Sand Mining | Grand Rapids Institute for Information Democracy
Why does frack sand mining threaten Cheshire & East Anglia? | Frack Off
