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.
They started building the Mackinac Bridge in 1957. The bridge was finished and allowed traffic to cross it in 1957.
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.
1892
It opened to the public in 1937. Construction began on January 5, 1933. It took a little over 4 years to complete the bridge.
The Golden Gate Bridge construction was completed and it was opened to automobiles on May 28, 1937, a day after it was opened to the pedestrians. Construction began on January 5, 1933.