Powder mill
Encyclopedia
Mill (grinding)
A grinding mill is a unit operation designed to break a solid material into smaller pieces. There are many different types of grinding mills and many types of materials processed in them. Historically mills were powered by hand , working animal , wind or water...
that manufactures blackpowder, a type of gunpowder
Gunpowder
Gunpowder, also known since in the late 19th century as black powder, was the first chemical explosive and the only one known until the mid 1800s. It is a mixture of sulfur, charcoal, and potassium nitrate - with the sulfur and charcoal acting as fuels, while the saltpeter works as an oxidizer...
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A powder mill could be driven by wind
Windmill
A windmill is a machine which converts the energy of wind into rotational energy by means of vanes called sails or blades. Originally windmills were developed for milling grain for food production. In the course of history the windmill was adapted to many other industrial uses. An important...
or water power, and contained rollers for grinding the ingredients of gunpowder together, as well as presses and tumbling barrels and sieve
Sieve
A sieve, or sifter, separates wanted elements from unwanted material using a woven screen such as a mesh or net. However, in cooking, especially with flour, a sifter is used to aerate the substance, among other things. A strainer is a type of sieve typically used to separate a solid from a liquid...
s for compacting, granulating, and grading the powder. Powder mills were built with an eye towards mitigating the danger of explosion
Explosion
An explosion is a rapid increase in volume and release of energy in an extreme manner, usually with the generation of high temperatures and the release of gases. An explosion creates a shock wave. If the shock wave is a supersonic detonation, then the source of the blast is called a "high explosive"...
, usually with one or more walls built purposely weak so that the force of an accidental explosion could be directed towards an open field or a river.
In 1802, the DuPont
DuPont
E. I. du Pont de Nemours and Company , commonly referred to as DuPont, is an American chemical company that was founded in July 1802 as a gunpowder mill by Eleuthère Irénée du Pont. DuPont was the world's third largest chemical company based on market capitalization and ninth based on revenue in 2009...
family started their industrial enterprises in the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
by building the Eleutherian Mills
Eleutherian Mills
From 1802 to 1921, Eleutherian Mills was a gunpowder mill site used for the manufacture of explosives by the Du Pont family business. The name also refers to the house on the hill above the mills, which was the first Du Pont family home in America. The business was founded by Eleuthère Irénée du Pont...
on the Brandywine Creek in Delaware
Delaware
Delaware is a U.S. state located on the Atlantic Coast in the Mid-Atlantic region of the United States. It is bordered to the south and west by Maryland, and to the north by Pennsylvania...
. This was the start of large-scale gunpowder production in America, supplanting what had been primarily a cottage industry.
The place where the finished powder was stored was called a powder magazine
Gunpowder magazine
A gunpowder magazine is a magazine designed to store the explosive gunpowder in wooden barrels for safety. Gunpowder, until superseded, was a universal explosive used in the military and for civil engineering: both applications required storage magazines...
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America
- Eleutherian MillsEleutherian MillsFrom 1802 to 1921, Eleutherian Mills was a gunpowder mill site used for the manufacture of explosives by the Du Pont family business. The name also refers to the house on the hill above the mills, which was the first Du Pont family home in America. The business was founded by Eleuthère Irénée du Pont...
(DuPontDuPontE. I. du Pont de Nemours and Company , commonly referred to as DuPont, is an American chemical company that was founded in July 1802 as a gunpowder mill by Eleuthère Irénée du Pont. DuPont was the world's third largest chemical company based on market capitalization and ninth based on revenue in 2009...
), Wilmington, DelawareWilmington, DelawareWilmington is the largest city in the state of Delaware, United States, and is located at the confluence of the Christina River and Brandywine Creek, near where the Christina flows into the Delaware River. It is the county seat of New Castle County and one of the major cities in the Delaware Valley... - Frankford Powder-MillFrankford Powder-MillThe 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...
, Frankford, PennsylvaniaPennsylvaniaThe Commonwealth of Pennsylvania is a U.S. state that is located in the Northeastern and Mid-Atlantic regions of the United States. The state borders Delaware and Maryland to the south, West Virginia to the southwest, Ohio to the west, New York and Ontario, Canada, to the north, and New Jersey to... - Morristown Powder-Mill, Morristown, New JerseyMorristown, New JerseyMorristown is a town in Morris County, New Jersey, United States. As of the 2010 United States Census, the town population was 18,411. It is the county seat of Morris County. Morristown became characterized as "the military capital of the American Revolution" because of its strategic role in the...
[1776, Jacob Ford, Marker at rear of Acorn Hall property]
Europe
- GrenelleGrenelleGrenelle is a neighbourhood in southwestern Paris, France. It is a part of the 15th arrondissement of the city.The area takes it name from Latin Garanella, meaning a wooded area where rabbits live...
Mill - France - Ballincollig Royal Gunpowder MillsBallincollig Royal Gunpowder MillsBallincollig Royal Gunpowder Mills was one of three Royal gunpowder mills that manufactured gunpowder for the British Government. Located in Ballincollig near Cork city in Ireland, the powder mills were originally opened in 1794 as a private enterprise, before being taken over by the British...
, CorkCounty CorkCounty Cork is a county in Ireland. It is located in the South-West Region and is also part of the province of Munster. It is named after the city of Cork . Cork County Council is the local authority for the county...
, IrelandIrelandIreland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth... - Faversham explosives industryFaversham explosives industryThe Faversham explosives industry: Faversham, in Kent, England, has claims to be the cradle of the UK's explosives industry: it was also to become one of its main centres. The first gunpowder plant in the UK was established in the 16th century, possibly at the instigation of Faversham Abbey...
, FavershamFavershamFaversham is a market town and civil parish in the Swale borough of Kent, England. The parish of Faversham grew up around an ancient sea port on Faversham Creek and was the birthplace of the explosives industry in England.-History:...
, England - Waltham Abbey Royal Gunpowder MillsWaltham Abbey Royal Gunpowder MillsThe Royal Gunpowder Mills, Waltham Abbey, an Anchor Point of the European Route of Industrial Heritage, , set in of parkland and containing 21 buildings of major historical importance, mixes history, science, and attractive surroundings...
, Waltham Abbey, EssexWaltham Abbey, EssexWaltham Abbey is a market town of about 20,400 people in the south west of the county of Essex, in the East of England region. It is about 24 km north of London on the Greenwich Meridian and lies between the River Lea in the west and Epping Forest in the east. It takes its name from The Abbey...
, England