| 1950s WMD |
| Big boomer |
| SALT concern |
| SALT subject |
| Bikini blast |
| Fusion weapon |
| Certain W.M.D. |
| Nuclear weapon |
| Big bang maker |
| Big boom maker |
| Eniwetok first |
| Nuclear threat |
| Cold War threat |
| Frightful force |
| Powerful weapon |
| Cold War concern |
| A nuclear weapon |
| Cold War era WMD |
| Weapon since '52 |
| Cold war specter |
| Bikini demolisher |
| Weapon since 1952 |
| Mushroom cloud maker |
| Weapon in a 1952 test |
| Ivy Mike" test weapon |
| Edward Teller's legacy |
| Oppenheimer opposed it |
| Blast maker, informally |
| Thermonuclear explosive |
| Cold War threat, briefly |
| Test ban subject, briefly |
| U.S.S.R.'s Big Ivan, e.g. |
| Thermonuclear blast maker |
| Weapon of mass destruction |
| Big bang maker, informally |
| Exploder at Eniwetok: 1952 |
| Weapon first tested in '52 |
| Nuke tested at Bikini Atoll |
| Big bang, and it's no theory |
| Eniwetok blaster, informally |
| Big blast producer, for short |
| Explosive development of 1951 |
| It was tested on Bikini, 1954 |
| The first one went off in 1952 |
| Godzilla creator, in the story |
| Thermonuclear explosive (Abbr.) |
| Mushroom cloud former, for short |
| Thermonuclear explosive, briefly |
| Big bang maker, and it's no theory |
| Weapon first tested in 1952, for short |
| Truman announced its development in January 1950 |
| Weapon detonated on Enewetak Atoll in 1952, briefly |
| Its testing awakened Godzilla ... and what's dropped, facetiously, into five puzzle answers |