After DuPont abandoned the city following World War I, moving its manufacturing facilities elsewhere and specializing in other products, Hopewell briefly became a ghost town until 1923 when Tubize Corporation established a plant on the old DuPont site. The same year, the city of Hopewell annexed the neighboring town of City Point, which enabled it to expand and thrive. The Tubize plant was later acquired by Firestone Tire and Rubber Company and was a major employer in Hopewell for decades. Allied Chemical and Dye Corporation and Hercules Chemical also established plants on portions of the old DuPont site.