DUQUESNE  , a

borough of Allegheny county, Pennsylvania, U.S.A., on the Monongahela river, about 12 M . S.E. of Pittsburg . Pop . (1900) 9036, of whom 3451 were foreign-born; (1910 census) 15,727 . It is served by the Pennsylvania railway . Its most prominent buildings are the Carnegie free library and club (opened in 1904 and containing 17,500 volumes in 1908), and the city hall . A short distance N. of the borough limits Kenny-wood Park, with a large auditorium and pavilion, is an attractive resort . By far the most important industry of the borough is the manufacture of steel . The value of the borough's factory products increased from $20,333,476 in 1900 to $28,494,303 in 1905, or 40.1% . The municipality owns and operates its water-works . Duquesne was settled in 1885 and was incorporated in 1891 .