Поволжье
In Russia Peter the Great initiated an investigative program of Ukhta oil shale in 1697. Data on physical and chemical properties of Ukhta oil shale was published by a correspondent member of the Russian Academy Tertii Bornovolokov in 1809. In 1769, Peter Simon Pallas described oil shale of the Volga Region. In the 1830s Germain Henri Hess investigated Baltic oil shales with resulting determination of the semicoking process product yields.