| Date | Description |
|---|---|
| 2018-02-04 | update person_title Aaron J. Kilgo: Associate => Staff Member |
| 2018-02-04 | update person_title Brian C. Traweek: Mining Engineer => Associate; Mining Engineer |
| 2018-02-04 | update person_title Chad Drzewiecki: GIS Specialist => Associate; Associate GIS Specialist |