…supplying coal-tar chemicals and roofing; General Chemical Company (founded 1899), specializing in industrial acids; National Aniline & Chemical Company (founded 1917), producing dyes; Semet-Solvay Company (founded 1894), manufacturing coke and its by-products; and Solvay Process Company (founded 1881), producing alkalies and nitrogen materials. In the 1940s these companies were transformed…
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