Frac Sand Company Liquidating Western Wisconsin Mine – Wisconsin Public Radio News
Fracsand from a processing plant in Chippewa Falls, Wisc. Steve Karnowski/ AP Photo A frac sand mining company that declared bankruptcy last year is liquidating one of four Wisconsin mines. Prior to the filing, Texas-based Hi-Crush Proppants was one of the state’s biggest producers of sand used in hydraulic fracturing for oil and natural gas.…