A view of the water intake manifold system within the B Reactor at Hanford, Washington, showcases the precision engineering that underpinned the world’s first full-scale plutonium production reactor. Rows of valves, pipes, and pathways illustrate the complex infrastructure used to control the flow of cooling water—essential for maintaining the reactor's operation during the Manhattan Project era. The elevated walkways and interconnected components highlight the industrial design that allowed workers to navigate and manage this vast system, ensuring the reactor’s efficiency and safety during its historic mission.