The history of Pittsburgh began with centuries of Native American civilization in the modern Pittsburgh region, known as Jaödeogë’ in the Seneca language. Eventually, European explorers encountered the strategic confluence where the Allegheny and Monongahela Rivers meet to form the Ohio, which leads to the Mississippi River. The area became a battleground when France and Great Britain fought for control in the 1750s. When the British were victorious, the French ceded control of territories east of the Mississippi.
United States Steel Corporation, more commonly known as U.S. Steel, is an American integrated steel producer headquartered in Pittsburgh, Pennsylvania, with production operations primarily in the United States of America and in Central Europe. The company produces and sells steel products, including flat-rolled and tubular products for customers in industries across automotive, construction, consumer, electrical, industrial equipment, distribution, and energy. Operations also include iron ore and coke production facilities.
The PNC Financial Services Group, Inc. is an American bank holding company and financial services corporation based in Pittsburgh, Pennsylvania. Its banking subsidiary, PNC Bank, operates in 27 states and the District of Columbia, with 2,629 branches and 9,523 ATMs. PNC Bank is on the list of largest banks in the United States by assets and is one of the largest banks by number of branches, deposits, and number of ATMs.
The Pittsburgh and Lake Erie Railroad, also known as the "Little Giant", was formed on May 11, 1875. Company headquarters were located in Pittsburgh, Pennsylvania. The line connected Pittsburgh in the east with Youngstown, Ohio, in the Haselton neighborhood in the west and Connellsville, Pennsylvania, to the east. It did not reach Lake Erie until the formation of Conrail in 1976. The P&LE was known as the "Little Giant" since the tonnage that it moved was out of proportion to its route mileage. While it operated around one tenth of one percent of the nation's railroad miles, it hauled around one percent of its tonnage. This was largely because the P&LE served the steel mills of the greater Pittsburgh area, which consumed and shipped vast amounts of materials. It was a specialized railroad, deriving much of its revenue from coal, coke, iron ore, limestone, and steel. The eventual closure of the steel mills led to the end of the P&LE as an independent line in 1992.
Allis-Chalmers was a U.S. manufacturer of machinery for various industries. Its business lines included agricultural equipment, construction equipment, power generation and power transmission equipment, and machinery for use in industrial settings such as factories, flour mills, sawmills, textile mills, steel mills, refineries, mines, and ore mills.
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.
Henry Phipps Jr. was an American entrepreneur known for his business relationship with Andrew Carnegie and involvement with the Carnegie Steel Company. He was also a successful real estate investor. After selling his stock in Carnegie Steel, he devoted a great deal of his time and money to philanthropic works.
Koppers is a global chemical and materials company based in Pittsburgh, Pennsylvania, United States. Its headquarters is an art-deco 1920's skyscraper, the Koppers Tower.
Silo was an electronics retailer operated throughout the United States between 1947 and 1995. The western region stores were known for a number of years as "Downings" in Colorado and "Appliance-TV City" in Arizona and California.
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 Works and the USS Clairton Coke Works.
The economy of Pittsburgh, Pennsylvania is diversified, focused on services, medicine, higher education, tourism, banking, corporate headquarters and high technology. Once the center of the American steel industry, and still known as "The Steel City", today the city of Pittsburgh has no steel mills within its limits, though Pittsburgh-based companies such as US Steel, Ampco Pittsburgh and Allegheny Technologies own several working mills in the Pittsburgh metropolitan area.
Carpenter Technology Corporation develops, manufactures, and distributes stainless steels and corrosion-resistant alloys. In fiscal year 2018, the company's revenues were derived from the aerospace and defense industry (55%), the industrial and consumer industry (17%), the medical industry (8%), the transportation industry (7%), the energy industry (7%), and the distribution industry (6%). The company's products are used in landing gear, shaft collars, safety wires, electricity generation products, intervertebral disc arthroplasty, and engine valves and weldings.
Firth Brown Steels was initially formed in 1902, when Sheffield steelmakers John Brown & Company exchanged shares and came to a working agreement with neighbouring company Thomas Firth & Sons. In 1908 the two companies came together and established the Brown Firth Research Laboratories and it was here, in 1912, under the leadership of Harry Brearley they developed high chrome stainless steel. The companies continued under their own management until they formally merged in 1930 becoming Firth Brown Steels. The company is now part of Sheffield Forgemasters.
Titan Machinery, Inc. is one of the largest dealers of agricultural and construction equipment and claims to be the largest dealer for the CNH Industrial brands in the world. It is based in West Fargo, North Dakota and has locations throughout the Midwestern United States, Australia, Austria, Bulgaria, Germany, Romania and Ukraine. The company is publicly traded on NASDAQ using the symbol TITN. As of 2023, the company reported a total revenue of US$2.209 billion.
The Mon Valley Works–Irvin Plant is a steel processing plant operated by U.S. Steel and historically a "hot strip mill" in the Pittsburgh suburb of West Mifflin, Pennsylvania. The site consists of 650 acres on a hilltop 250 feet above the Monongahela Valley. The plant has an annual capacity of 2.9 million net tons of steel from an 80″ hot strip mill, 64″ and 84″ Pickle lines, 84″ five-stand cold reduction mill, continuous annealing line, batch and open-coil annealing facilities, 84″ temper mill, 52″ hot-dip galvanizing line and a 48″ hot-dip galvanizing line, as well as the #11 Shear Line and #17 Recoil line.
Mesta Machinery was a leading industrial machinery manufacturer based in the Pittsburgh area town of West Homestead, Pennsylvania. It was founded in 1898 by George Mesta when he merged his machine shop with another. Mesta "machines" can be found in factories throughout the world and as of 1984 had equipment in 500 steel mills. Mesta was the 488th largest American company in 1958 and the 414th largest in 1959.
Crucible Industries, commonly known as Crucible, is an American company which develops and manufactures specialty steels, and is the sole producer of a line of sintered steels known as Crucible Particle Metallurgy (CPM) steels. The company produces high speed, stainless and tool steels for the automotive, cutlery, aerospace, and machine tool industries.
Primetals Technologies Limited, is an engineering and plant construction company headquartered in London, United Kingdom, with numerous locations worldwide. It serves clients in the metals industry, both the ferrous and the nonferrous metals sector. It was established as a joint venture between Siemens VAI Metals Technologies and Mitsubishi-Hitachi Metals Machinery in 2015. As of 2020, Primetals Technologies is a joint venture of Mitsubishi Heavy Industries and partners.
Nippon Steel Corporation is Japan's largest steelmaker, headquartered in Chiyoda-ku, Tokyo. The company has four business segments, including steelmaking, engineering, chemicals, and system solutions. It is the largest producer of crude steel in Japan and the third largest in the world. The company is on the Forbes Global 2000 list, ranked 1971 in 2023. The company is the second incarnation of the Nippon Steel name, following the original Nippon Steel Corporation which was formed from the merger of Yamata Iron & Steel with Fuji Iron & Steel in 1950 and lasted until 2012.
Steel & Tube Holdings Limited is a New Zealand-listed company that was established in 1953 with the merger of Stewarts & Lloyds of New Zealand, The Iron & Steel Company of New Zealand and McLean & Todd to form a steel company with a national reach.
