did not "constitute Americans. any ‘real hazard to the immediate health" of In January 1956 he revealed that the Commission had been studying the hazards of fallout worldwide under the name of Project Sunshine. Project Sunshine scientists labeled strontium 90 as the most hazardous radioisotope in fallout and created a worldwide network to monitor its presence in humans, foods, and soils. Libby, who became the Cammission's spokesman on fallout, subsequently released more scientific data on fallout through a series of highly technical speeches .?/ Toward Nuclear Test Ban Negotiations As fears of fallout rose so did fears of the ultimate consequences of the nuclear arms race. President Eisenhower, fully aware that a nuclear war could result in "civilization destroyed" and "the arnihilation of the irreplaceable heritage of mankind handed down ts us generation from generation” was firmly committed to halting the nuclear arms race. To inject life into deadlocked disarmament negotiations he took the unprecedented step of appointing Harold Stassen to a cabinet level post for developing disarmament policy. At the Geneva conference in 1955, the President offered to exchange blueprints of military facilities with the Russians; meanwhile, he prodded Harold Stassen <o devise a comprehensive disarmament plan. To the Conmissio's cisvay Stassen seemed all too willing to separate the test ban issue “mom The Commission argued thet a properly supervised ban on weapon tests should be an integral part of comprehensive disarmament agreement with the Russians.7° pe comprehensive disarmament negotiations. The weapes program was so firmly linked to ams control issues that the Commission would have to manage the program negotiations. IR with one eye on arms conic.