Aka Union Mill / Denver Flour Mill
| c1750 | Michael Bear |
| 1775 | Jacob Bear |
| 1775 | Michael Bear |
| 1784 | Jacob Keller |
| 1789 | Samuel Keller |
| c1795 | John and Mary Keller |
| 1797 | Abraham Bear |
| 1807 | Henry Bear built new mill |
| c1837 | Samuel H. Gring |
| 1850 | Destroyed by fire and rebuilt |
| 1860 | Tannery added |
| 1877 | Christian Keller |
| 1891 | Eliza (Keller) Stark & Emanuel R. Stark |
| 1910 | Harvey Shimp |
| 1921 | Paul Klein |
| 1921 | Klein Bros. Chocolate Co. |
| 1922 | John B. Meckley |
| 1922 | Harvey E. Eberly |
| 1924 | Mill fell into disuse |
| 1928 | Roy Eberly |
| 1960 | Dr. V. Peter Munteanu |
| 1984 | Richard & Elizabeth Kramer |
| 2011 | Kerry Kegerise |
| 2014 | Kerry Kegerise & Mark Clark |
| 2023 | Bear Mill Holdings, LLC |
The Bear Mill Estate won the C. Emlen Urban award for Restorative and Adaptive Reuse from the Historic Preservation Trust of Lancaster County in 2015. In 2022, the property remains a popular wedding venue. The estate’s website is http://www.bearmillestate.com/.
The mill is located at 50 Weaver Road, Denver, PA.
| Built | c1850 |
| Structure | 2.5 Story Stone |
| Water Source | Cocalico Creek |
| Township | East Cocalico |
| Type | Grist |
| Headrace | 2,500 feet |
| Tailrace | 300 feet |
| Dam Height | 5.5 feet |
| Power | 2 Turbines + Steam |
| Capacity | 8 bbl / day |
