The Savannah River National Laboratory (SRNL) - located in Aiken, SC - is the applied research and development laboratory at the U.S. Department of Energy's (DOE) Savannah River Site (SRS). The laboratory applies state-of-the-art science to provide practical, high-value, cost-effective solutions to complex technical problems. SRNL technologies are used to detect weapons of mass destruction, clean up contaminated groundwater and soil, develop hydrogen as an energy source, support the need for a viable national defense, and safelY manage hazardous materials. The SRS was constructed to produce the basic materials necessary in the fabrication of nuclear weapons - primarily tritium and plutonium-239. Five reactors were also built in an effort to produce these materials for the nation's defense programs. In support of these efforts, the Savannah River Laboratory was created in 1951 and soon became the second-largest research facility for operator E.I. DuPont de Nemours and Company.