Aka Donegal Mill
| 1837 | Christian Haldeman |
| 1854 | John Becker Iron Rolling Mill |
| 1899 | Theological Seminary of Lancaster |
| c1900 | Dr. John S. Simons |
| 19?? | Converted to apartments |
| 2011 | Converted to private residence by Keith Brodfuehrer |
The mill is located at 1480 Long Lane, Columbia, PA.
| Built | 1837 |
| Structure | 2.5 Story Stone |
| Water Source | Donegal Springs Run |
| Township | East Donegal |
| Type | Flour/Cider |
| Tailrace | 100 feet |
| Dam Height | 4 feet |
| Power | 1 Overshot |
