Establishments primarily engaged in performing geophysical, geological, and other exploration services for oil and gas on a contract or fee basis.

  • Aerial geophysical exploration, oil and gas field on a contract basis
  • Exploration, oil and gas field on a contract basis
  • Geological exploration, oil and gas field on a contract basis
  • Geophysical exploration, oil and gas field on a contract basis
  • Seismograph surveys, oil and gas field on a contract basis