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Dr. Julius Tollas, is Non-Executive Chairman of Green Source Holdings LLC.

A native of Hungary, Dr. Tollas received a B.S. and M.S. in Petroleum Geological Engineering from the Petroleum and Gas Engineering University of Bucharest, Rumania (1953).

In 1954, he began working at the Lovaszi Oil Field in Hungary as a Production Geologist. His responsibilities included evaluating which secondary recovery method was the best suited for the ageing oil reservoirs in Hungary. Dr. Tollas designed the first field wide water flood project in Hungary for the Lovaszi field which was also the first commercial oil discovery (c1953) by Esso.

In November 1956, Dr. Tollas had to escape from Hungary because of his activities in the revolution against the Soviet Communism. He eventually ended up in France and then immigrated to the United States in July 1959. He began working for Sinclair Oil Company in West Texas and later in Tulsa, Oklahoma, the company’s headquarters, where his responsibilities were to follow all secondary recovery projects of the company. By redeveloping a twenty year old field in Venezuela, Dr. Tollas was responsible for oil production increasing from 28000 BOPD to 53000 BOPD in one year. While working full time, he received a Ph.D. in Petroleum Engineering from Oklahoma State University.

Dr. Tollas then joined the Exxon Production Research Center in Houston, Texas, working in the Thermal Recovery Section. Dr. Tollas initiated for Exxon the first “Fire Flood” (in situ burning) project at the Talco field in Texas. The following year he was transferred to Exxon’s Reservoir Engineering Section.