PLUTONIUM

(See also Elements; Nuclear Energy)

artificial element: g60 11/22 21

missing or unaccounted for: g81 10/8 30

pacemakers: g76 12/22 30

poison: g81 10/8 30

principal constituent of nuclear bombs: g57 2/22 4

traces of plutonium 239 in Nagasaki and Hiroshima: g81 3/8 29