The first mill here was built around 1740 by Philip Glonninger. The present field stone mill was built by Joseph and Mary Horst in 1813. Nissley’s Mill operated as a grist mill into the early 20th century. It was a chicken house for a while then was converted into apartments and later into a private residence.
| Built | 1813 |
| Structure | 3.5 Story Stone |
| Dimensions | 45 x 50 |
| Type | Flour/Grist |
| Headrace | 1,300 feet |
| Tailrace | 100 feet |
| Dam Height | 5.5 feet |
| Power | 1 Overshot |
| Capacity | 25 bbl / day |
| SPOOM | PA-036-070 |
| Water Source | Conoy Creek |
| Watershed | Conoy Creek |
| Township | West Donegal |
| Location | 40.109735, -76.628502 |