SYDNEY MINES

town, Cape Breton Island, eastern Nova Scotia, Canada. It lies immediately northeast of North Sydney and faces Sydney across Sydney Harbour. Sydney Mines was once a major coal-producing community. Mining began locally in 1766, and in 1830 systematic operations were undertaken. One of the area mines extended about 5 miles (8 km) out under the sea. The last mine was closed in 1975. Inc. 1889. Pop. (1991) 7,551.