JEANNETTE, a borough of Westmoreland county, Pa., U.S.A., 23m. S.E. of Pittsburgh ; served by the Pennsylvania Rail road. The population was 20,627 in 1920 (2o% foreign-born white), and was 15,126 under the Federal census of 1930. It is supplied with natural gas, and is primarily a manufacturing centre, with an aggregate factory output in 1925 valued at The principal product is glass, of many kinds and for many pur poses : window-glass, marine and submarine equipment, table and cooking-ware, lamps, jars, toys, bottles, sidewalks, prism tile, lenses and many other articles. For the first decade glass was the
only manufacture, but since 1899 other industries have been estab lished, notably the manufacture of rubber goods, power-plant equipment, heating systems and iron pipe-fittings. Jeannette was founded in 1888, and was incorporated as a borough in 1889.