On the other side of the state, Pittsburgh's heavy industry provided significant quantities of weapons and ammunition. The Fort Pitt Works near Pittsburgh made mammoth iron castings for giant siege howitzers and mortars, among the largest guns in the world. The foundry produced 1,193 guns (15 percent of the total U.S. wartime artillery production) and almost 200,000 artillery projectiles. 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.