Description provided with image: "Ground breaking at NSU for radiological lab building USPHS. L-R: D. R. Chadwick, Chief, Division of Radiological Health, Washington,D.C.; Alan Bible, U. S. Senator from Nevada; Oliver R. Placak, officer in charge, SW Radiological Lab, Las Vegas; Dean William Carlson, NSU; Mrs. Juanita White, Regent University of Nevada; Richard Ronzone, regent; Howard Cannon, U.S. Senator from Nevada."