The Bessemer process was the first inexpensive industrial process for the mass production of steel from molten pig iron before the development of the open hearth furnace. The key principle is removal of impurities from the iron by oxidation with air being blown through the molten iron. The oxidation also raises the temperature of the iron mass and keeps it molten.
Coke is a grey, hard, and porous coal-based fuel with a high carbon content. It is made by heating coal or petroleum in the absence of air. Coke is an important industrial product, used mainly in iron ore smelting, but also as a fuel in stoves and forges.
Steelmaking is the process of producing steel from iron ore and/or scrap. In steelmaking, impurities such as nitrogen, silicon, phosphorus, sulfur, and excess carbon are removed from the sourced iron, and alloying elements such as manganese, nickel, chromium, carbon, and vanadium are added to produce different grades of steel.
Basic oxygen steelmaking, also known as Linz-Donawitz steelmaking or the oxygen converter process, is a method of primary steelmaking in which carbon-rich molten pig iron is made into steel. Blowing oxygen through molten pig iron lowers the carbon content of the alloy and changes it into low-carbon steel. The process is known as basic because fluxes of calcium oxide or dolomite, which are chemical bases, are added to promote the removal of impurities and protect the lining of the converter.
A steel mill or steelworks is an industrial plant for the manufacture of steel. It may be an integrated steel works carrying out all steps of steelmaking from smelting iron ore to rolled product, but may also be a plant where steel semi-finished casting products are made from molten pig iron or from scrap.
Thomas Morrison Carnegie was a Scottish-born American industrialist. He was the brother of steel magnate Andrew Carnegie and co-founder of the Edgar Thomson Steel Works.
Carnegie Steel Company was a steel-producing company primarily created by Andrew Carnegie and several close associates to manage businesses at steel mills in the Pittsburgh, Pennsylvania area in the late 19th century. The company was formed in 1892, and was subsequently sold in 1901 in one of the largest business transactions of the early 20th century, to become a major component of U.S. Steel. The sale made Carnegie one of the richest men in history.
The Jones and Laughlin Steel Corporation, also known as J&L Steel or simply as J&L, was an American steel and iron manufacturer that operated from 1852 until 1968. The enterprise began as the American Iron Company, founded in 1852 by Bernard Lauth and Benjamin Franklin Jones, about 2.5 mi (4.0 km) south of Pittsburgh along the Monongahela River. Lauth's interest was bought in 1854 by James Laughlin. The first firm to bear the name of Jones and Laughlin was organized in 1861, and headquartered at Third & Ross in downtown Pittsburgh.
Union Railroad is a Class III switching railroad located in Allegheny County in Western Pennsylvania. The company is owned by Transtar, Inc., which is a subsidiary of Fortress Transportation and Infrastructure Investors, after being acquired from U.S. Steel in 2021. The railroad's primary customers are the three plants of the USS Mon Valley Works, the USS Edgar Thomson Steel Works, the USS Irvin Plant and the USS Clairton Coke Works.
In 1763, King George III provided John Ormsby approximately 2,400 acres (9.7 km2) along the south bank of the Monongahela River as payment for his services during the French and Indian War. The land was then divided into four boroughs: South Pittsburgh, Birmingham, East Birmingham, and Ormsby. The four boroughs were annexed into the City of Pittsburgh in 1872. These areas, collectively, provided for the foundation of the South Side as it is known today.
The Edgar Thomson Steel Works is a steel mill in the Pittsburgh area communities of Braddock and North Braddock, Pennsylvania. It has been active since 1875. It is currently owned by U.S. Steel and is known as Mon Valley Works – Edgar Thomson Plant.
Carrie Furnace is a former blast furnace located along the Monongahela River in the Pittsburgh area industrial town of Swissvale, Pennsylvania, and it had formed a part of the Homestead Steel Works. The Carrie Furnaces were built in 1884 and they operated until 1982. During its peak, the site produced 1,000 to 1,250 tons of iron per day. All that is left of the site are furnaces #6 and #7, which operated from 1907 to 1978, and its hot metal bridge. The furnaces, designated a National Historic Landmark in 2006, are among the only pre-World War II 20th century blast furnaces to survive.
Before 1800 A.D., the iron and steel industry was located where raw material, power supply and running water were easily available. After 1950, the iron and steel industry began to be located on large areas of flat land near sea ports. The history of the modern steel industry began in the late 1850s. Since then, steel has become a staple of the world's industrial economy. This article is intended only to address the business, economic and social dimensions of the industry, since the bulk production of steel began as a result of Henry Bessemer's development of the Bessemer converter, in 1857. Previously, steel was very expensive to produce, and was only used in small, expensive items, such as knives, swords and armor.
Cokeville was a town in Westmoreland County, Pennsylvania, United States. Following the St. Patrick's Day flood of 1936, the Army Corps of Engineers began planning a dam project on the Conemaugh River to harness the flood waters. There were 122 structures in Cokeville on a 1951 map. In 1952, as the town was being evacuated for the flood control project, most of these structures were razed, but some were moved up the hill to Cokeville Heights near Rt. 217.
The US iron and steel industry has paralleled the industry in other countries in technological developments. In the 1800s, the US switched from charcoal to coal in ore smelting, adopted the Bessemer process, and saw the rise of very large integrated steel mills. In the 20th century, the US industry successively adopted the open hearth furnace, then the basic oxygen steelmaking process. Since the American industry peaked in the 1940s and 1950s, the US industry has shifted to small mini-mills and specialty mills, using iron and steel scrap as feedstock, rather than iron ore.
Skinningrove steelworks is a steel mill in Skinningrove, North Yorkshire, England. The business was formed in 1874 as the Loftus Iron Company, after a liquidation of the company reformed in 1880 as the Skinningrove Iron Company. The works expanded from producing only pig iron to include steel production in the early 20th century, with mills specialising in long products including railway rail. As part of the business the company constructed a jetty at Skinningrove, and owned an ironstone mine in Loftus.
Julian Kennedy was an American engineer and inventor, known for his national and international contributions to the steel industry. He was awarded the ASME Medal in 1928.
Eugene Lawrence Messler was an American football player and coach and businessman. He played at the tackle position for Yale's 1891, 1892, and 1893 championship teams, coached the 1894 Centre football team, and played on the Duquesne Country and Athletic Club professional football teams from 1895 to 1897. He was the general superintendent of Jones and Laughlin Steel Company's Pittsburgh coke ovens and blast furnaces from approximately 1899 to 1911 and the president of the Eureka Fire Brick Company for many years commencing in 1907.
The British and Tasmanian Charcoal Iron Company (BTCIC) was an iron mining and smelting company that operated from 1874 to 1878 in Northern Tasmania, Australia. It was formed by floating the operations of a private company, the Tasmanian Charcoal Iron Company that operated between 1871 and 1874.
Isabella Furnace was a collection of blast furnaces built in 1872 in Etna, Pennsylvania, across the Allegheny River from Pittsburgh.
