town, northwestern Turkey, on the Yenice River. Once a small hamlet, it has grown rapidly since the establishment of Turkey's first major iron and steel complex there in 1940. The works were expanded greatly in the 1950s and '60s. Facilities include a coking plant, blast furnaces, a foundry, and tube works; chemical plants produce sulfuric acid and phosphates. The mills receive coal and manganese by rail from Zonguldak and iron ore from the Divriği mines; dolomite and limestone are obtained locally. Karabük lies on the Ankara-Zonguldak railway line and is linked by road with Ankara and Kastamonu. Pop. (2000) 100,749.