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Henry Bessemer FRS was an English inventor, whose steel-making process would become the most important technique for making steel in the nineteenth century for almost one hundred years from 1856 to 1950. He also played a significant role in establishing the town of Sheffield as a major industrial centre.Bessemer had been trying to reduce the cost of steel-making for military ordnance, and developed his system for blowing air through molten pig iron to remove the impurities. This made steel easier, quicker and cheaper to manufacture, and revolutionized structural engineering.

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George Westinghouse Jr. was an American entrepreneur and engineer based in Pennsylvania who invented the railway air brake and was a pioneer of the electrical industry, gaining his first patent at the age of 19.Westinghouse saw the potential in alternating current as an electricity distrubution system in the early 1880s and put all his resources into developing and marketing it, a move that put his business in direct competition with the Edison direct current system.

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He spent the early parts of his life working the railways around New Haven, Connecticut as a clerk, express agent and a conductor. During this time, in 1845, he married Philena Adams who died while giving birth to their second child in 1854. Drake remarried three years later to Laura Dowd, sixteen years his junior, in 1857. During this summer, illness prevented Drake from carrying on with his job. He retained the privileges of a train conductor, including free travel on the railroads. By 1858, the Drake family found themselves living in Titusville Pennsylvania

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Andrew Carnegie was a Scottish-American industrialist, business magnate, and philanthropist. Carnegie led the expansion of the American steel industry in the late 19th century and became one of the richest Americans in history. Andrew was born November 25, 1835, Dunfermline, United Kingdom and died August 11, 1919, Lenox MA. After selling Carnegie Steel, he surpassed John D. Rockefeller as the richest American for the next several years.

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John Davison Rockefeller Sr. was an American business magnate and philanthropist.  He is widely considered the wealthiest American of all time, and the richest person in modern history. Rockefeller was born into a large family in upstate New York. Rockefeller was born July 8, 1839, Richford NY .One of his quotes was Don't be afraid to give up the good to go for the great.