<Li> Film is now available of 1966 tests here at time 09: 00 and another test later in this film . </Li> <Li> Test No. 6, First hydrogen bomb test--June 17, 1967 </Li> <Li> CHIC - 16, 200 kt - 1 Mt atmospheric test--June 17, 1974 </Li> <Li> #29, Last atmospheric test--October 16, 1980 . This would also be the last atmospheric nuclear test by any country </Li>

When was the last nuclear bomb set off