Geophysical Service
American oil and gas exploration company / From Wikipedia, the free encyclopedia
Geophysical Service Inc. (often abbreviated GSI) was a Texas-based company founded by John Clarence Karcher and Eugene McDermott in 1930,[1] for the purpose of using refraction and reflection seismology to explore for petroleum deposits.
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Quick Facts Founded, Headquarters ...
Founded | 1930 |
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Headquarters | Dallas, Texas, U.S. |
Website | www![]() |
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