George Washington constructed a large, extremely profitable gristmill at Mount Vernon using cutting-edge technology of the time.

Washington's merchant gristmill, erected in 1770-1771, was capable of producing 5,000 to 8,000 pounds of flour and cornmeal a day. Over a period of 29 years, Washington's wheat crops were turned into flour for overseas markets, and the corn ground at the gristmill was used to feed the slave population and paid staff, as well as the Washington family and their frequent guests.  In the fall of 1791, Washington learned of the newly patented automated milling system invented by Oliver Evans. Evans received U.S. Patent #3 for his groundbreaking system, which moved wheat and flour throughout the mill without the need of manual labor. Washington purchased a license for the patent and had the milling system installed in his gristmill. Today, this milling system is faithfully interpreted, fully-functioning, and open to guests on a seasonal basis.

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3200 Mount Vernon Memorial Highway
Mount Vernon, Virginia 22121