A noose found June 3 on the site of a $6.5-billion federal uranium processing construction site has prompted a $200,000 reward from the North America's Building Trades Unions of the alleged racial incident at the U.S. Energy Dept. Y-12 National Security Complex near Oak Ridge, Tenn. Site officials discovered the noose in a lightly trafficked area of the project and removed it immediately, according to a site spokesperson. 

An FBI investigation of the incident also has begun, Rep. Jim Cooper (D-Tenn.) tweeted on June 10 and he expects the results of the report to be made public.