National Geographic : 1942 Dec
Press Association Men Who Built Your Tires Now Mass-produce Antiaircraft Guns and Mounts inRapid-fire Order Carriages are ready for assembly with their 40-mm. Bofors guns at this Firestone plant. The wire cage is apower plant. Starting inMarch, 1941, the com pany translated Swedish metric specifications into inches, built a five-acre plant, organized 1,500 skilled workers, and began production inOctober, same year. By October, 1942, output had increased 1,000 percent.