Staff Sgt. Paul Bauer, 9th Civil Engineer Squadron water and fuels system maintenance journeyman, prepares to heat a sample of bio-solid in a furnace at 550 degrees Celsius at the waste water facility on Beale Air Force Base, Calif., March 5, 2013. The scientific process burns off volatile solids in the sample. (U.S. Air Force photo by Airman 1st Class Bobby Cummings/Released)
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