History of Science and Engineering Annotation << Back M.F. OTRIN – RESEARCHER METHODS OF EXTRACTION OF COBALT FROM ORES ELIZABETHAN FIELD FOR THE DEFENSE INDUSTRY DURING THE GREAT PATRIOTIC WAR M.K. Surnina In publication of the extract from the report of Professor Ortino «laboratory studies on the benefi ciation of iron ores Elizabethan deposits and the leaching of cobalt from the products obogascheniya». This research work was conducted from July to December 1941, in order to clarify the question of the possibility of production in the Urals strategically necessary element cobalt, which imparts to the metal alloys the properties of svartberget, korrozionnostojkoj, heat resistance, etc.), as well as documents on the submission of Professor Mikhail Fedorovich Ortina for the award named after Stalin and the petition to award him the title of Honored worker of science and technology. Keywords: M. F. Otrin; cobalt; Elizabethan the Deposit; fl otation. Contacts: Е-mail: surnina-rgantd@mail.ru Pp. 23-36.