| 100% | UREY | 4 | Manhattan Project scientist Harold ___ |
| 92% | UREY | 4 | Nobel Prize-winning Manhattan Project scientist Harold |
| 81% | UREY | 4 | Harold ___, Manhattan Project scientist |
| 72% | UREY | 4 | Manhattan Project scientist |
| 72% | FERMI | 5 | Manhattan Project scientist |
| 56% | UREY | 4 | Harold of the Manhattan Project |
| 48% | ABOMB | 5 | Manhattan Project project |
| 48% | ATESTS | 6 | Manhattan Project projects |
| 48% | URANIUM | 7 | Manhattan Project element |
| 48% | ABOMB | 5 | Manhattan Project result |
| 48% | FERMI | 5 | Manhattan Project VIP |
| 48% | LAPP | 4 | Manhattan Project physicist |
| 48% | FERMI | 5 | Manhattan Project physicist |
| 48% | ABOMB | 5 | Manhattan Project product |
| 48% | TELLER | 6 | Manhattan Project physicist |
| 48% | ABOMB | 5 | Manhattan Project creation |
| 48% | ATOM | 4 | Manhattan Project subject |
| 48% | LOSALAMOS | 9 | Manhattan Project town |
| 48% | ATOMBOMB | 8 | Manhattan Project product |
| 48% | OPPENHEIMER | 11 | Manhattan project leader |
| 47% | ABOMB | 5 | Manhattan Project project, informally |
| 47% | ABOMB | 5 | Manhattan Project project, briefly |
| 47% | OAKRIDGE | 8 | Manhattan Project research center |
| 47% | ATEST | 5 | Manhattan Project trial, briefly |
| 47% | ABOMB | 5 | Manhattan Project result, informally |
| 47% | ABOMB | 5 | Manhattan Project weapon, informally |
| 47% | ROSSI | 5 | Manhattan Project physicist Bruno ___ |
| 47% | ABOMB | 5 | Manhattan Project weapon (Hyph.) |
| 46% | FISSIONIMPOSSIBLE | 17 | Manhattan Project skeptic's motto? |
| 46% | CODENAMES | 9 | Manhattan Project and Operation Overlord |