0:04. A look beyond the barricades through a virtual tour of the Department of Energy's Savannah River Site. 12, No. Tall chain-link fences and coils of razor-sharp wire encircle the gray monolith. The scientists placed an experiment called Mike on the tower to test the Teller-Ulam design, named after two of the Manhattan Project scientists who helped develop the atomic bombs dropped on Hiroshima and Nagasaki. She worked as an administrative assistant in an office building a good distance from any of the reactors, laboratories or radioactive waste disposal areas. From this encounter, regarded as one of the bloodiest battles of the American Revolution (1775-83), emerged two of Savannah's most notable military heroes, Sergeant William Jasper and Count Casimir Pulaski, both of whom were killed during the unsuccessful assault on the British lines. With hundreds of sources of environmental pollution, the Savannah River is impaired by heavy metals, sediment, and low levels of dissolved oxygen. This includes Augusta and below. More flights went out to collect additional samples, and scientists across the country pored over the results. The Nature Conservancy of Georgia describes the Savannah River Basin's abundant diversity of life as rivaling that of a South American rain forest. for (i=0; i