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Reverberatory furnaces (in this context, usually called air furnaces) were formerly also used for melting brass, bronze, and pig iron for foundry work. They were also, for the first 75 years of the 20th century, the dominant smelting furnace used in copper production, treating either roasted calcine or raw copper sulfide concentrate. [1]
The East Broad Top Railroad and Coal Company was chartered in 1856. Due to financial constraints and the American Civil War, the railroad was not built by its original charterers, but a new group of investors began to acquire right-of-way in 1867 and was able to construct the railroad as a 3 ft (914 mm) narrow gauge line in 1872–1874.
A cupola or cupola furnace is a melting device used in foundries that can be used to melt cast iron, Ni-resist iron and some bronzes. The cupola can be made almost any practical size. The size of a cupola is expressed in diameters and can range from 1.5 to 13 feet (0.5 to 4.0 m). [1] The overall shape is cylindrical and the equipment is ...
Kaiser Steel was a steel company and integrated steel mill near Fontana, California. Industrialist Henry J. Kaiser founded the company on December 1, 1941, [ 1 ] and workers fired up the plant's first blast furnace, named "Bess No. 1" after Kaiser's wife, on December 30, 1942. Then in August 1943, the plant would produce its first steel plate ...
An induction furnace is an electrical furnace in which the heat is applied by induction heating of metal. [1][2][3] Induction furnace capacities range from less than one kilogram to one hundred tons, and are used to melt iron and steel, copper, aluminum, and precious metals. The advantage of the induction furnace is a clean, energy-efficient ...
Hopewell Furnace stove, 10-plate cooking model, with a lower firebox and upper oven for baking. Hopewell Furnace National Historic Site in southeastern Berks County, near Elverson, Pennsylvania, is an example of an American 19th century rural iron plantation, whose operations were based around a charcoal-fired cold-blast iron blast furnace.
The furnace alone needed as many as sixty people working around the clock in twelve-hour shifts. The iron works support staff included a company clerk, a host of teamsters, woodcutters, the colliers, farmers and household servants. There was a wide gap between the classes. Workers were housed in small homes and worked very hard for low wages.
The blast furnace was located at the base of a hill, on the opposite side of Ironmines Creek, 250 yards to the east of the rest of the iron works (puddling furnaces, foundry and rolling mill). [17] This area became known as 'the top works'. There was access to the furnace top from the top of the hill via a timber trestle.
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