Peirce Mill, Water mill in Rock Creek Park, Washington D.C., United States
The three-story stone mill contains three pairs of millstones weighing 2,400 pounds each and rotating at 125 revolutions per minute.
Built in 1829 by Isaac Peirce, this mill operated continuously until 1897 when the main shaft broke during the grinding of a commercial rye load.
The mill stands as a testament to the early industrial heritage of Washington D.C., demonstrating the automated milling techniques developed by Oliver Evans.
The National Park Service conducts milling demonstrations on the second and fourth Saturdays from April through October at 2401 Tilden Street Northwest.
The mill machinery utilizes 60 percent of its generated power for turning the millstones, with the remaining 40 percent dedicated to other operations.
Location: Washington, D.C.
Inception: 1829
GPS coordinates: 38.94000,-77.05222
Latest update: September 23, 2025 14:24
Washington DC is the political center of the USA with the White House, Capitol and Lincoln Memorial. The city houses national museums including the Smithsonian Institution, National Gallery of Art and Library of Congress. Historical districts, parks and monuments complete the urban landscape.
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