a city in southern Poland, located in Katowice Województwo. Population, 191,000 (1967). Mining center in the Upper Silesian coal basin. There are large coal mines (up to 15 million tons per year); lead and zinc ores have been extracted since the 12th century. Bytom engages in the production of coke; ferrous metallurgy (a concern in Bobrek); heavy-duty machine-building; and the chemical, garment, and furniture industries. The city has an opera.