The Edgar Thomson Steel Works
is a steel mill
in North Braddock, Pennsylvania
. It is active since 1872.
The mill occupies the historic site of Braddock's Field
, on the banks of the Monongahela River
east of Pittsburgh, Pennsylvania
. On July 9, 1755, in the Battle of the Monongahela
, French and Indian forces from Fort Duquesne
defeated the expedition of British General Edward Braddock
, who himself was mortally wounded.
Braddock's Field also was the site of a rally of rebellious militiamen and farmers during the Whiskey Rebellion
, prior to a massive march on the city of Pittsburgh
on August 1, 1794.
The site is on the banks of the Monongahela, which provides cost-effective, riverine transportation of coke
, iron and finished steel products.
The Edgar Thomson Steel Works was designed and built because of the Bessemer process
, the first inexpensive industrial process for the mass production of steel. In the process, air blowing through the molten iron removed impurities via oxidation. This took place in the Bessemer converter, a large ovoid steel container lined with clay or dolomite.
In the summer of 1872
, while in Europe, Andrew Carnegie
learned about the Bessemer process. He returned to Pittsburgh with... Read More