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  • Description: producers
(4 results)



Display: 20

    • Wawa Employees

    • Dairy products industry; Employees;
    • Pennsylvania Milk Producers Banquet. L to R: Charles Meyers (advertising manager), Edmond Dunn (sales statistician), Donald Hayco (?) (V.P. retail sales), James Finley (assistant sales manager), Harry Hofmeister (plant manager), Milton Lasch...
    • Hot Blast Stove

    • Blast furnace stoves, Pipe stoves, Heat exchangers
    • The Engineer. Drawings of a hot blast stove as designed by Mr. W. Crossley, Askam-In- Furness, England.. This a design using iron tubes acting as a heat exchanger where the heat source is from burning a gas either from the blast furnace, gas...
    • Belle Works

    • Manufacturing Process of Ammonia
    • Water flows 40,000 gallons a minute in this Mountain Unit to supply the raw water needs and to operate the closed tube scrubbing process for purifying gases in the making of ammonia by high pressure synthesis at the DuPont Companys Belle, WV Works....

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