GALENA
| Date | Clue |
|---|---|
| 2018-10-23 | Lead-bearing ore |
| 2017-09-19 | Main ore of lead |
| 2009-01-18 | Lead provider |
| 2005-04-01 | Lead provider |
| 2001-01-27 | Ore used for old radio crystals |
| 2000-11-19 | Ore of lead |
| 1998-01-20 | Lead ore |
| 1996-12-07 | PbS |
| 1995-06-09 | Lead ore |
| 1993-12-23 | Lead ore |