Since World War II, Federal nuclear activities have been explicitly recognized under Federal law as activities that are ultra-hazardous. Nuclear weapons production and testing have involved unique dangers, including potential catastrophic nuclear accidents that private insurance carriers have not covered and recurring exposures to radioactive substances and beryllium that, even in small amounts, can cause medical harm.

Since the inception of the nuclear weapons program and for several decades afterwards, a large number of nuclear weapons workers at sites of the Department of Energy and at sites of vendors who supplied the Cold War effort were put at risk without their knowledge and consent for reasons that, documents reveal, were driven by fears of adverse publicity, liability, and employee demands for hazardous duty pay.

Many previously secret records have documented unmonitored exposures to radiation and beryllium and continuing problems at these sites across the Nation, at which the Department of Energy and its predecessor agencies have been, since World War II, self-regulating with respect to nuclear safety and occupational safety and health. No other hazardous Federal activity has been permitted to be carried out under such sweeping powers of self-regulation.