Claim: Nikolay Pogredov (born November 17, 1860) oversaw the construction of the first experimental oil shale open-pit in Estonia, and, in 1916-1923, published a series of papers on this subject.
Evidence: 17 November 1860
Saint Petersburg He oversaw the construction of the first experimental oil shale open-pit in Estonia. In 1916–1923, he published a series papers on this subject.