Siversk or Seversk (Ukrainian: Сі́верськ; Russian: Се́верск; until 1973, Yama [Я́ма; Я́ма]) is a city in Donetsk Oblast (province) of Ukraine situated 99km north of Donetsk. It had a population of 12,608 in 2010. There are some industrial factories located within the raion, notably the Stroidetal brick factory. Siversk is a former sovhoz by the name of Yamskyi. The town was founded in 1913 because of the operation of the dolomite mine near the railway station of Yama built in 1910. The town received city status in 1961 and was renamed Seversk in 1973.