- 1) Hanford Nuclear Waste Site, Washington, USA contains approx 2, 100 tonnes of spent nuclear fuel and 8 tonnes of plutonium. The site is about 1518 square kilometres.
- 2) Murmansk, Murmansk, Russia. Undisclosed tonnage. The port holding the former Soviet Union's aging nuclear submarines.
- 3) Kola Peninsula, Murmansk, Russia. Undisclosed tonnage. Highest concentration of active and derelict nuclear reactors in the world.
- 4) Mayak, Chelyabinsk, Russia