Wis. Frack Sand Sludge Spill Reaches Mississippi RiverWisconsin officials were testing for environmental and health hazards Thursday after an accident at a frack sand mine sent millions of gallons of sludge into waterways, tinting them orange as the thick plume traveled downstream into the Mississippi River.
Tiller Fined For Frack Sand Air, Noise ViolationsA silica sand processing plant in eastern Minnesota has agreed to pay a fine for air quality and noise violations. The Minnesota Pollution Control Agency levied a fine of $85,000 for Tiller Corp. which has been operating a processing and shipment center in Chisago County for nearly two years.
Winona County OKs 1st Frack Sand Mine Permit Winona County commissioners on Tuesday approved a conditional use permit for the first operation to exclusively mine frack sand in the southeastern Minnesota county.
Frack Sand Co. Agrees To Voluntary Review In Minn.A sand mining company has agreed to a voluntary environmental review of two mines it's proposing for Winona County.