From bottom right, a conveyor carries sand from the crushing area to a wash plant tower to be washed and sorted by grain size at the Preferred Sands plant in Blair, Wis., on June 20, 2012.

Frac sand boom creates thousands of jobs

Currently, there are no official employment numbers for the state’s rapidly expanding frac sand industry. But the Wisconsin Center for Investigative Journalism, using job-site estimates developed by the Wisconsin Economic Development Corporation, found that when existing mines and those being built are fully operating, the industry will employ about 2,780 people — a sizeable number given the state’s overall luckluster job picture.

Explainer: What is fracking?

Find out more about the hydraulic fracturing process and how Wisconsin “frac sand” is used to drill for gas and oil.