 Other prominent Pittsburgh area factories included Singer, Nimick and Co. (maker of 3" Ordnance rifles) and Smith, Park and Co., which produced more than 300,000 artillery projectiles.Pittsburgh industries collectively manufactured 10 percent of the total U.S. wartime production of artillery projectiles.The U.S. Allegheny Arsenal was the primary military manufacturing facility for U.S. Army accouterments, as well as saddles and other cavalry equipment.