Editing History of Pittsburgh (section)

===Corporations===
Top corporate headquarters such as [[Gulf Oil]] (1985), [[Koppers]] (1987), [[Westinghouse Electric (1886)|Westinghouse]] (1996) and [[Rockwell International]] (1989) were bought out by larger firms, with the loss of high paying, white collar headquarters and research personnel (the "brain drain") as well as massive charitable contributions by the "home based" companies to local cultural and educational institutions.  At the time of the Gulf Oil merger in 1985 it was the largest buyout in world history involving the company that was No. 7 on the Fortune 500 just six years earlier.  Over 1,000 high paying white collar corporate and PhD research jobs were lost in one day.

Today, there are no steel mills within the city limits of Pittsburgh, although manufacture continues at regional mills, such as the [[Edgar Thomson Works]] in nearby [[Braddock, Allegheny County, Pennsylvania|Braddock]].