Hagley Museum near Wilmington in New Castle County, Delaware — The American Northeast (Mid-Atlantic)

Lesmok Mills

Photographed by Devry Becker Jones (CC0), April 27, 2025

1. Lesmok Mills Marker

Inscription. This pair of roll mills produced Lesmok Powder, a semi-smokeless sporting powder developed in the late 19th century. Mixing the ingredients of Lesmok Powder was a hazardous process. To protect workers, heavy double "flash walls" were built. The mill operators could watch the process through peepholes built into the wall. When the gunpowder was finished, an operator stopped the Mills by closing off the supply of water from the mill race.

Erected by Hagley Museum and Library.

Topics. This historical marker is listed in these topic lists: Industry & Commerce • Waterways & Vessels.

Location. 39° 46.643′ N, 75° 34.478′ W. Marker is near Wilmington, Delaware, in New Castle County. It is in Hagley Museum. It is on Hagley Creek Road north of Blacksmith Hill Road, on the right when traveling north. Touch for map. Marker is at or near this postal address: 450 Blacksmith Hill Rd, Wilmington DE 19807, United States of America. Touch for directions.

Regionally, this marker is in Greater Philadelphia.

It is also in the American Mid-Atlantic

and on the Delmarva Peninsula.

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Globally, it is in the North Atlantic Region,

North America,

the Western Hemisphere,

the Western World,

and the Anglosphere.

Historically, it finds itself in what was once New Netherland

and also one of the original Thirteen Colonies.

Other nearby markers. At least 8 other markers are within walking distance of this marker: Explosion of 1920 (within shouting distance of this marker); Missile Map of January 2, 1920 Explosion (within shouting distance of this marker); Power of Powder / Press House Operations (within shouting distance of this marker); Leaving France / Arriving in America (within shouting distance of this marker); Éleuthère Irénée du Pont (within shouting distance of this marker); Starting the DuPont Company (within shouting distance of this marker); Settling on the Brandywine (within shouting distance of this marker); Victor du Pont (within shouting distance of this marker). Touch for a list and map of all markers in Wilmington.

The Lesmok Mills image. Click for full size.

Photographed by Devry Becker Jones (CC0), April 27, 2025

2. The Lesmok Mills

Credits. This page was last revised on April 29, 2025. It was originally submitted on April 29, 2025, by Devry Becker Jones of Washington, District of Columbia. This page has been viewed 156 times since then and 29 times this year. Photos: 1, 2. submitted on April 29, 2025, by Devry Becker Jones of Washington, District of Columbia.