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John Hefner's Location
Denver, CO, US
John Hefner's Education
Colorado School of Mines
Master's degree (Petroleum Engineering)
1991 - 1992
Marietta College
Bachelor's degree (Petroleum Engineering)
1981 - 1985
John Hefner's Summary
John Hefner, based in Denver, CO, US, is currently a President at Blue & Gray Resources, Inc. John Hefner holds a 1991 - 1992 Master's degree in Petroleum Engineering @ Colorado School of Mines.