The Frankford Powder-Mill is a historic gunpowder factory in the Frankford neighborhood of Philadelphia, Pennsylvania. At the time it was built in 1774 by Oswald Eve, it was the only such mill in the American colonies. Other powder mills operated in the 17th and 18th centuries but stopped production after the French and Indian war. Eve built his mill next to Frankford Creek, from which it drew its power. The building still stands but has long since been devoted to other uses.