A small historical reference
The first mention of the village Järve (where it is called Jeruius) in Danish land book refers to 1241. The current part of the city Kukruse was first mentioned in 1241, too (Kukarus), and Sompa - in 1420 (Soenpe).
Perhaps, on the site of the current Kohtla-Jarve and there would be no city, if not the oil shale deposits which are quite significant in these parts. In 1919, the Association "State Shale Industry" has been created in the Republic of Estonia. Slate was mined as an underground, in mines and open way, that is, the shale sections. Near the mines and settlements grew cuts. In 1924, not far from the railway station of Kohtla plant for the production of shale oil was built. Next to him, I began to grow a working village, named Kohtla-Jarve. In the mid-1930s, it included several working quarters - Kyava, Vahekyula, Pavandu. Kohtla-Jarve received city status in 1946.