This photograph captures the intricate face of the B Reactor, the world's first full-scale nuclear reactor, located at the Hanford Site in Washington. The image showcases the aluminum-tubed matrix into which uranium fuel slugs were loaded, a key part of the reactor's function during the Manhattan Project. Spanning 36 by 36 feet, the reactor core housed 2,004 tubes filled with uranium, with workers using the face to insert and monitor material. The warm lighting accentuates the mechanical complexity, evoking a sense of the technological achievements and challenges of the atomic age.