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  2. Armstrong World Industries - Wikipedia

    en.wikipedia.org/wiki/Armstrong_World_Industries

    Former Armstrong Cork Company building in Pittsburgh, Pennsylvania (built circa 1901) In 1860, Thomas M. Armstrong, the son of Scottish-Irish immigrants from Derry, joined with John D. Glass to open a one-room shop in Pittsburgh, Pennsylvania, carving bottle stoppers from cork by hand. Their first deliveries were made in a wheelbarrow.

  3. PPG Place - Wikipedia

    en.wikipedia.org/wiki/PPG_Place

    [6] In 2006, readers of the Pittsburgh City Paper voted PPG Place as the best building in Pittsburgh. [12] In 2005, when the vacancy rate of downtown offices was around 20%, PPG Place was between 87 and 89% full. The management company was able to attract out-of-town corporations to relocate operations to Pittsburgh.

  4. List of corporations in Pittsburgh - Wikipedia

    en.wikipedia.org/wiki/List_of_corporations_in...

    There are nine Fortune 500 companies headquartered in the Pittsburgh metropolitan area. [1] 120 PNC Financial Services (financial) 220 PPG Industries (industrial) 226 Howmet Aerospace (industrial) 245 Wesco International (industrial) 254 Viatris (pharmaceuticals) 310 U.S. Steel (industrial) 330 Alcoa (metals/mining) 362 Dick's Sporting Goods ...

  5. Koppers - Wikipedia

    en.wikipedia.org/wiki/Koppers

    The landmark Koppers Building in downtown Pittsburgh opened in 1929. [ 2 ] In 1943, Koppers, at the US Government's behest, built a factory in Kobuta, Pennsylvania on the Ohio River downriver from Beaver , to manufacture styrene - butadiene monomer, a building block used to make a form of synthetic rubber for the World War II defense effort.

  6. Knauf Insulation - Wikipedia

    en.wikipedia.org/wiki/Knauf_Insulation

    Knauf Insulation is an international company owned by the Knauf family and is an important manufacturer of insulation products in the US and Europe. [1] The company is a producer of insulation materials such as glass wool, stone wool, wood wool boards, EPS, XPS, as well as the Heradesign wood wool based acoustic ceiling systems.

  7. H. J. Heinz Company complex - Wikipedia

    en.wikipedia.org/wiki/H._J._Heinz_Company_complex

    From 1999 to 2001, Heinz built a 70,000-square-foot (6,500 m 2) warehouse on the east side and moved its headquarters to downtown Pittsburgh. [10] By 2001, many of the historic buildings had been vacant for five to eight years. Heinz had no long-term plans for the buildings and sold them to a residential developer. [11]