what year did andrew carnegie start inventing
1876
So he can have a steel boner
Andrew Carnegie was buried in Sleepy Hollow Cemetary in Tarytown, New York The question is where was he BORN? Andrew Carnegie was born in Dunfermline, Scotland. http://www.spartacus.schoolnet.co.uk/USAcarnegie.htm
1901
It was completed in 1894
No, it wasn't rebuilt. It was refurbished.
At first Canegie worked as a telegraph messenger. Within a year he was promoted to an operator. Starting in 1853 he was employed as a secertary at Pennslavania Railroad company. When he was 18 he got promoted to be in charge of a railroad divison. After that was the civil war. Carnegie was appointed as Superintendant of millatary rail roads. After the war Carnegie devoted all his time to the ironworks industry and formed KeyStone bridge works.
They started building the Mackinac Bridge in 1957. The bridge was finished and allowed traffic to cross it in 1957.
Andrew Carnegie began using the Bessemer process in the early 1870s, specifically around 1872, to produce steel on a large scale at his steel mills. This innovative method allowed for the mass production of steel by converting iron into steel more efficiently and cost-effectively, significantly contributing to the growth of the steel industry and Carnegie's fortune.
The steel industry in America was significantly developed by Andrew Carnegie, who founded the Carnegie Steel Company in 1892. Carnegie's efforts, along with the introduction of the Bessemer process for steel production, revolutionized the industry and made steel more affordable and accessible. By the late 19th century, he had become a leading figure in the American steel industry, contributing to its growth and expansion.
It opened to the public in 1937. Construction began on January 5, 1933. It took a little over 4 years to complete the bridge.