Ed Westcott (James Edward Westcott), in official capacity as photographer employed by the US government. — http://www.dpi.anl.gov/dpi2/ph_gallery/pic11s.htm Also obtainable from U.S. Department of Energy; http://www.cfo.doe.gov/me70/manhattan/images/Y12AlphaVeryLarge.jpg Alpha Track Calutron at the Y-12 Plant at Oak Ridge, Tennessee from the Manhattan Project, used for uranium enrichment by electromagnetic separation process. See http://www.cfo.doe.gov/me70/manhattan/alpha_racetrack.htm for additional information.