Kiviõli is an industrial town in Ida-Viru County, Estonia, established in 1922. The main industry in the town is oil shale mining, which gives t…Kiviõli is an industrial town in Ida-Viru County, Estonia, established in 1922. The main industry in the town is oil shale mining, which gives the town its name. In 1922, the joint-stock company Eesti Kiviõli established an oil shale quarry in land belonging to the village of Salaküla, and mining commenced in 1930. A worker's settlement belonging to the village of Varinurme was built in the 1930s and named Kiviõli after the joint-stock company. Kiviõli became a town in 1946.