- Thos I Foster
- Tice Oil Corp
- Tice Oil Corp
- Tom J King
- Tom Mairs PC
- Tom W Williams
- Tom Wood Consulting
- Trowbridge Sample Svc
- Tucker Resources
- Tucker Resources
- Tujay Inc
- Tujay Inc
- U S Geological Survey
- U S Geological Survey
- Udaloy Environmental Svc
- Unavco
- Upstream Resources
- Utah Geological Survey
- V F LTD
- Valdez Geological
- Van Reenan Intl Inc
- Volk All & Gas Co
- W B Caswell
- W C Osborne
- W L Boots Goode
- W L Boots Goode
- W L Thompson Jr
- W M Quackenbush Geologist
- W M Quackenbush Geologist
- W M Quackenbush Geologist
- W Noel Mc Anulty Geologist
- W Noel Mc Anulty Geologist
- W R Berger Jr
- W R Berger Jr
- W T Probandt
- Wal-Ric Energy
- Walbe & Assoc Inc
- Walker H Powe
- Wambaugh Exploration Co
- Wayne A Piette
- Wayne D Miller
- Wei-Ji LTD
- Wes Perry Sr Geologists
- West Texas Oil & Gas Ops
- Wildco Resources Inc
- Wilford Lee Stapp Consulting
- Wilford Lee Stapp Consulting
- William Barone
- William Barone
- William Barone
- William F Grauten
- William F Grauten
- William F Morrison
- William F Morrison
- William G Johnson
- William G Johnson
- William G King
- William G King
- William J Purves
- William P Wilbert
- William T Crowder
- William T Crowder
- Willis R Brown
- Wintermute
- Wolf Energy Inc
- Worden & Co
- Wyoming Rocks Inc
- Zemco
