In late spring 1948, UT issued pamphlets describing the proposed uses of radioactive isotopes in medicine, agriculture, and industry for the benefit of all Tennesseans. A drawing on the cover of one pamphlet strongly suggested that Circle Park would be the site of the research center and hospital. In summer 1949 Dr. Brehm proposed to the building commission charged with site selection a location on university-owned property across the river from the agricultural campus. Acting on advice from the Atomic Energy Commission, the center was positioned on low ground, back from the river and shielded by a hill, better to protect it in the event of an atomic bomb attack on either Oak Ridge or Alcoa.