Plaster Mill

The Plaster Mill is a former production facility in Stanhope designed to process and manufacture gypsum-based materials for construction. The building contains distinct areas where raw materials were processed, finished products were stored, and equipment was housed for daily operations.

The mill was established in the 1800s to supply construction materials to the growing regional building industry. Its listing on the National Register of Historic Places recognizes its significance as a surviving example of early American industrial manufacturing.

The National Register of Historic Places listed the Plaster Mill to ensure preservation of industrial architectural elements that represent early American manufacturing methods.

The exterior of the building can be seen and photographed from public viewpoints around the property. Those interested in viewing the interior should contact ahead to arrange access, as it is not routinely open to visitors.

The building retains original machinery and mechanical equipment from its working years, offering insight into how gypsum was processed during that era. These preserved components allow visitors to see the actual tools and systems that powered daily production at the facility.