A spill at a sand mining facility in Wisconsin has dumped an unknown amount of sand and other sediment into the St. Croix River and wetlands near the Minnesota border, the Wisconsin Department of Natural Resources said.

Tagged with: Army Corps of Engineers DNR frac sand St. Croix National Scenic Riverway St. Croix River wetlands

The rolling hills and scenic bluffs of western Wisconsin and southeastern Minnesota hide a valuable resource that has sparked what's been called a modern-day gold rush.

Tagged with: frac sand fracking mining U.S. Geological Survey

RED WING, Minn. (AP) — Under the forested bluffs of southeastern Minnesota lies an increasingly sought-after resource prized by the energy industry that’s attracting interest to the state from an increasing number of companies, which isn’t sitting well with some ...

Tagged with: frac sand fracking mining