- Associated Energy Consultants
- Barlow & Haun Inc
- Baugh Ronald A Geolgst
- Bruce Larson
- Casper Log Library LLC
- Cave Creek Consulting
- Consulting Geologist
- Don E Lawson
- Donald F Cardinal Geologist
- Douglas K Morton
- Fred H Carr
- G William Hurley
- Geologic Consulting
- Goolsby Finley & Assoc LLC
- Goolsdy Finley & Assoc
- Harry Ptasynski
- John Albanese Consulting
- John R Kerns
- Kenneth K Farmer
- Marvin A Keller
- Ralph W Specht Consulting
- Richard G Boyd
- Richard G Boyd
- Robert E Hudson
- Robert E Hudson
- Sears Geologists
- Worden & Co
