| ISOTOPES | I call for help carrying most important electronic and nuclear materials (8) |
| SOCRATES | Appeal for help carrying packing case for philosopher |
| SILKWOOD | Karen, nuclear materials factory worker portrayed on screen in a 1983 film by Meryl Streep (8) |
| ISOSTASY | I call for help and stay working for balanced state (8) |
| ISOLATES | I call for help comprehending overdue quarantines (8) |
| DOE | Govt. agency that regulates handling nuclear materials |
| SHRAPNEL | Sawn-off projectile filled with charge and nuclear particles for dispersal (8) |
| ARTHURCOMPTON | US physicist and Nobel Laureate (1927, with Charles Wilson) noted for his research on X-rays, and nuclear energy (6,7) |
| SNOWBALLFIGHT | Missile attacks in this global warfare and nuclear fallout starts to spread (8,5) |
| RANSACKER | Soldier carrying most of luggage over is a rifleman? |
| TOMATO | Child carrying most of wild old fruit (6) |
| AIRHEAD | Help carrying flightless bird for fool (7) |
| URANIUM | This element, whose isotopes are used as fuel in nuclear reactors and nuclear weapons, was discovered by German chemist Martin Heinrich Klaproth in 1789. One pound of this material yields as much ener |
| DECAY | Concern for dentists and nuclear physicists |
| LACINIATE | Maybe thus leaves Petain - I call for some backing |
| PNEUMATICDRILL | Stupidly imprudent, I call for rock breaker (9,5) |
| LILAC | I call for correction of this bloomer! (5) |
| TAILORING | Weaving a lot, I call for the skill of a couturier (9) |
| HEADSET | Electronic and tech startups following leaders producing virtual reality device? (7) |
| NANKEEN | Leaders in North America and North Korea ever at odds over nuclear material (7) |
