 Typical Stone & Webster wartime assignments included the design and construction of cartridge case plants, a complete steel foundry, a plant to produce bombsights and other equipment, a plant furnishing fire-control instruments, a facility producing aircraft superchargers, and three TNT-production plants, in addition to meeting demands for infrastructure and power facilities.The company was also called upon to engage in more creative projects.Perhaps the most creative Stone & Webster wartime effort was its involvement in the Manhattan Project, which designed and built the atomic bomb.