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  • Description: Grasselli
(21 results)



Display: 20

    • Grasselli Plant

    • Manufacture of Alumina Sulphate
    • Commercial alumine sulfate in ingot form being loaded for shipment at the Grasselli plant of E.I. du Pont de Nemours & Company in Philadelphia. In this form it is used for sizing paper as well as for water treating.
    • Grasselli Plant

    • Manufacture of Alumina Sulphate
    • Bauxite, used in the manufacture of commercial alumina sulfate (Alum) being dropped into bings on its way to the grinding mill for pulverization at the Grasselli plant of E.I. du Pont Nemours & Company.
    • Demonstration of Quilon

    • Quilon
    • Miss K. Grace Fahey, receptionist, under direction of Dr. Edward O. Hermann, research chemist, pours methylene blue dye over paper treated with Quilon stearato chromic chloride to demonstrate water repellency of the compound, developed by the...
    • Grasselli Plant

    • Manufacture of Alumina Sulphate
    • Bauxite as it comes from the mines, which is used in the manufacture of commercial alumina sulfate (Alum), on its way to the grinding mill for pulverization at the Grasselli plant of E.I. du Pont Nemours & Company in Philadelphia PA.
    • Grasselli Plant

    • Manufacture of Alumina Sulphate
    • Grinding raw materials for the manufacture of alumina sulfate (Alum) at the Grasselli plant of E.I. du Pont Nemours & Company in Philadelphia PA. This product is used for purifying water.
    • Jame River Works

    • Sulfuric acid plants: Cleveland, OH; East Chicago, IN; Fort Hill, Cincinnati, OH; James River, Richmond, VA; Fort Bend, KY
    • View of the James River works of the Grasselli Chemicals Department of the DuPont Company. This modern plant (near Richmond, Virginia) makes an old line product-sulfuric acid. The textile, fertilizer, petroleum, iron and steel, paint and pigment,...
    • Another tank car photo

    • Sulfuric acid plants: Cleveland, OH; East Chicago, IN; Fort Hill, Cincinnati, OH; James River, Richmond, VA; Fort Bend, KY
    • Sulfuric acid is a basic chemical used by industry on a large scale. The fertilizer, petroleum, textile, iron and steel, paint and pigment, chemical, explosives and other industries use millions of tons of it every year. The DuPont Company has been...
    • Sulfuric acid towers

    • Manufacturing process of sulfuric acid
    • Towers for the concentration of sulfuric acid and the recovery of nitrogen oxides catalyst for reuse in sulfuric acid manufacture at the Grasselli Works of E.I. du Pont Nemours & Company in Pennsylvania.
    • View of research directors

    • Studies of Environmental Comfort (clothing)
    • Research directors of the DuPont Company guide the research work of the department. Here in a Rayon laboratory physicist Jack Ballou (in shirtsleeves) explains to them, the use of unique 'iron lung' in basic studies on fabric comfort. His audience...
    • Sulfuric acid production

    • Manufacturing process of sulfuric acid
    • Sulfuric acid is a basic chemical used by industry on a large scale. The fertilizer, petroleum, textile, iron and steel, paint and pigment, chemical, explosives and other industries use millions of tons of it every year. The DuPont Company has been...
    • Sulfuric acid production

    • Manufacturing process of sulfuric acid
    • Sulfuric acid is a basic chemical used by industry on a large scale. The fertilizer, petroleum, textile, iron and steel, paint and pigment, chemical, explosives and other industries use millions of tons of it every year. The DuPont Company has been...
    • Break in an acid line

    • Manufacturing process of sulfuric acid
    • Sulfuric acid is a basic chemical used by industry on a large scale. The fertilizer, petroleum, textile, iron and steel, paint and pigment, chemical, explosives and other industries use millions of tons of it every year. The DuPont Company has been...
    • Control room

    • Manufacturing process of sulfuric acid
    • Sulfuric acid is a basic chemical used by industry on a large scale. The fertilizer, petroleum, textile, iron and steel, paint and pigment, chemical, explosives and other industries use millions of tons of it every year. The DuPont Company has been...
    • Sulfuric acid production

    • Manufacturing process of sulfuric acid
    • Sulfuric acid is a basic chemical used by industry on a large scale. The fertilizer, petroleum, textile, iron and steel, paint and pigment, chemical, explosives and other industries use millions of tons of it every year. The DuPont Company has been...

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