Aka Rock Furnace
| 1770 | Andreas & Veronica Kauffman Rifle Factory |
| 1780 | Jacob Kauffman |
| 1789 | Christian Musselman |
| 1794 | Converted to a grist mill |
| 1800s | David Musselman |
| 1833 | John Lintner & Christian Hershey |
| 1843 | John M. Bear |
| 1846 | John Schlott |
| 1851 | John Stoneroad |
| 1898 | Henry S. & Amanda Stoneroad |
| 1941 | Ben Mann |
| c1947 | George S. Mann |
| 1947 | Lancaster County Art Association Headquarters |
| 1972 | Damaged by Hurricane Agnes |
| 1976 | Brian Langsett converted to a residence |
The mill is located at 1560 Stone Mill Road and is a private residence.
| Built | 1770 |
| Structure | 2.5 Story Stone |
| Water Source | Little Conestoga |
| Township | Manor |
| Type | Flour/Grist |
| Headrace | 6 feet |
| Tailrace | 250 feet |
| Dam Height | 2 feet |
| Power | 1 Turbine |
| Capacity | 10 bbl / day |
