1.   Two men have allowed themselves to be injected with radioactive plutonium in the interests of science.

2.   A high-stakes dispute over the disposal of radioactive plutonium from nuclear warheads could come to a head on the Georgia-South Carolina border.

3.   Canada may become the disposal ground for highly radioactive plutonium from dismantled American and Russian nuclear weapons.

4.   Officials at Savannah River Site in South Carolina near Augusta on Thursday were trying to determine how seven workers at the nuclear military complex were contaminated with radioactive plutonium.

5.   Part of the work involves covering radioactive plutonium pits with a shell of high explosives.

6.   So is the fate of tons of radioactive plutonium removed from weapons and stored for now at the plant in cavernous concrete, steel and earth bunkers.

7.   South Carolina Gov. Jim Hodges has threatened to use the state police to keep out the highly radioactive plutonium.

8.   Suppose that a nuclear bomb is being dismantled, and its chemical explosives accidentally explode, spewing radioactive plutonium for hundreds of feet around.

9.   The probe carried a small amount of radioactive plutonium in energy packs powering vehicles intended to land on Mars.