<page_title> Oil shale in Estonia </page_title> <section_title> Mining </section_title> <table> <cell> Vanamõisa <col_header> Mine </col_header> </cell> <cell> open-pit <col_header> Type </col_header> </cell> <cell> 1931 <col_header> Closed </col_header> </cell> <cell> Riigi Põlevkivitööstus (1919–1924) Estonian Oil Development Syndicate Ltd. (1924–1930) Vanamõisa Oilfields Ltd. (1930–1931) <col_header> Owner(s) </col_header> </cell> </table>
In 1924, the Estonian Oil Development Syndicate Ltd. (later Vanamõisa Oilfields Ltd.) purchased an open-pit mine in Vanamõisa and opened a shale oil that was abandoned in 1931.