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2. Marston Mat - Wikipedia

   en.wikipedia.org/wiki/Marston_mat

   RAF aircrew with one of their Bristol Beaufighters on a PSP airstrip at Biferno, Italy, August 1944. Marston Mat, more properly called pierced (or perforated) steel planking (PSP), is standardized, perforated steel matting material developed by the United States at the Waterways Experiment Station shortly before World War II, primarily for the rapid construction of temporary runways and ...

3. Battelle Memorial Institute - Wikipedia

   en.wikipedia.org/wiki/Battelle_Memorial_Institute

   The institute was founded in 1929 by Gordon Battelle. [2] Originally focusing on contract research and development work in the areas of metals and material science, Battelle is now an international science and technology enterprise that explores emerging areas of science, develops and commercializes technology, and manages laboratories for customers.

4. Perforated metal - Wikipedia

   en.wikipedia.org/wiki/Perforated_metal

   Perforated metal, also known as perforated sheet, perforated plate, or perforated screen, is sheet metal that has been manually or mechanically stamped or punched using CNC technology or in some cases laser cutting to create different holes sizes, shapes and patterns.

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6. Worthington Enterprises - Wikipedia

   en.wikipedia.org/wiki/Worthington_Enterprises

   The company also operates two Joint Ventures within this business segment: WAVE (Worthington-Armstrong Venture), a joint venture with Armstrong World Industries, that produces all of the suspended metal ceiling grids supplied by Armstrong, and ClarkDietrich, a joint venture with ClarkWestern Building Systems and Dietrich Metal Framing that ...

7. Youngstown Sheet and Tube - Wikipedia

   en.wikipedia.org/wiki/Youngstown_Sheet_and_Tube

   The Youngstown Sheet and Tube Company, based in Youngstown, Ohio, was an American steel manufacturer. Officially, the company was created on November 23, 1900, when Articles of Incorporation of the Youngstown Iron Sheet and Tube Company were filed with the Ohio Secretary of State at Columbus. In 1905 the word "Iron" was dropped from the company ...