UREY
| Date | Clue |
|---|---|
| 2021-04-09 | Harold ___, Manhattan Project scientist |
| 2018-12-21 | Manhattan Project scientist Harold ___ |
| 2015-07-16 | 1934 Chemistry Nobelist Harold |
| 2008-05-01 | 1934 Chemistry Nobelist Harold |
| 2001-11-18 | Chemistry Nobelist Harold |
| 1999-11-25 | Manhattan Project scientist |
| 1998-05-30 | 1934 Chemistry Nobelist |
| 1995-02-13 | Chemistry Nobelist Harold |
| 1994-08-10 | Nobel chemist Harold |
| 1993-12-22 | 1934 chemistry Nobelist |