Lt. Col. Robert W. Green, U.S. Army Corps of Engineers Nashville District commander, presents a symbolic key to the new K-25 Interpretive Center to Jay Mullis, U.S. Department of Energy’s Oak Ridge Office of Environmental Management manager, during a turnover of the facility March 4, 2025, at East Technology Park in Oak Ridge, Tennessee. USACE has completed construction of the new building that now provides a historic lookout over the 44-acre footprint where the K-25 Building once stood, and the Oak Ridge Diffusion Plant produced uranium during World War II as part of the Manhattan Project. OREM plans to install exhibits in the new interpretive center constructed by USACE before holding a grand opening for the public in September 2025 that corresponds with the 80th anniversary of the end of World War II. (USACE Photo by Leon Roberts)