As supply meets demand, Wisconsin’s frac sand rush slows

By KATE PRENGAMAN Wisconsin Center for Investigative Journalism For more than a year, a 30-foot-tall pile of unwanted sand towered over three acres on Claude Riglemon’s property. The price for the sand dropped about the time this stockpile was ready for sale, so the 120,000 tons of sand just waited. Riglemon isn’t a miner. A…