McKittrick Oil Field the Teapot Dome Scandal of the Warren G. Harding administration; adjacent to the southwest is the Belgian Anticline Oil Field, along Route 58; and to the southeast is the huge Midway-Sunset Oil Field, the third largest oil field in the United States. The total productive area of the field is . The field is about long on the southeast to northwest axis, and about across. The predominant geologic feature, and the one that makes the McKittrick field distinctive, is the presence of a huge block of Monterey shale – more than long, approximately wide, and up to thick – which
Oil shale in Estonia (now district of Kiviõli) formed around the mine owned by Eesti Küttejõud. In 1924, the British investor-owned Estonian Oil Development Syndicate Ltd. (later Vanamõisa Oilfields Ltd.) purchased an open-pit mine in Vanamõisa and opened a shale oil extraction plant that was abandoned in 1931 due to technical problems. The Swedish–Norwegian consortium Eestimaa Õlikonsortsium (, ), controlled by Marcus Wallenberg, was founded in Sillamäe in 1926. New Consolidated Gold Fields Ltd. of the United Kingdom built a shale oil extraction plant at Kohtla-Nõmme in 1931. This facility continued to operate until 1961. In 1934, Eesti Kiviõli and New Consolidated Gold Fields