Middlesbrough
a manufacturing town, port and municipal and parliament- Vol. VI-Cyc-O MIDDLE STATES ary borough of England, in the North Riding of Yorkshire. Has numerous blastfurnaces and rolling mills, foundries, engineering works, ship yards, nail works, bolt and nut works, etc.; salt is being extensively worked, there being a thick bed of rock salt at a depth of 1,300 feet.
Its rapid growth has been due to its suitability as a port for the Durham coalfields, and to the smelting of iron ore abounding in the adjacent Cleveland Hills. The borough was incorporated in 1853, and returns one member to Parliament. Pop. (1917) 119,251.