During the American Revolution, coal produced in the Midlothian coal pits supplied the cannon factory on the James River at Westham, upstream from Richmond; it produced shot and shells for the Continental Army. By the end of the War, developers shipped Chesterfield coal to Philadelphia, New York, Boston and to every city in Virginia. Commenting on the area's coal in his "Notes on the State of Virginia" (1781–82), then-Governor Thomas Jefferson stated: "The country on James river, from 15 to 20 miles above Richmond, and for several miles northward and southward, is replete with mineral coal of a very excellent quality." During his presidency, Jefferson ordered coal from the Black Heath Mine in Midlothian for use in the White House.