Marion King Hubbert
Dr. Marion King Hubbert (born 1903, died 1989), know as M. King Hubbert, was geologist born in Texas, USA. He attended the University of Chicago where he obtained a degree with triple majors in 1929. He obtained a PhD in 1937. He worked as a teaching assistant at the University of Chicago from 1928 to 1931 then became an instructor at Columbia University, New York, in 1931. He met Howard Scott about this time and became one of the founding members of Technocracy Inc., where he contributed to the more scientific presentation of their technocratic ideas and was on the staff of the Continental Head Quarter (CHQ) of Technocracy Inc. Hubbert shared his accommodation with Scott until Hubbert married. 
Hubbert was responsible for the education aspects of Technocracy Inc. and was the main author of the Technocracy Study Course used to teach Technocracy Inc.’s version of technocracy. He also organised the East European Socialist Section of Technocracy Inc. in Cleveland.
In 1942 he moved away from New York and as a result of his work departed from Technocracy Inc. staff. He became a senior analyst of the Board of Economic Warfare in Washington in 1942. He later worked an analyst for Shell Oil Company where he developed the Hubbert Theory of oil, otherwise known as peak oil. He later served at a number other research and administrative posts. He was a member of the United Nations Scientific Conference on the Conservation and Utilization of Resources.