Geoffrey W. Mathews

• Assessment of geology, energy, and minerals (GEM) resources
• Assessment of geology, energy, and minerals (GEM) resources, Aldrich Mountain GRA (OR-020-13), Grant County, Oregon
• Assessment of geology, energy, and minerals (GEM) resources, Alvord Desert GRA (OR-023-19), Harney County, Oregon
• Assessment of geology, energy, and minerals (GEM) resources, Antelope Pocket GRA (ID-010-06), Twin Falls County, Idaho
• Assessment of geology, energy, and minerals (GEM) resources, Badlands GRA (NV-010-04), Elko County, Nevada
• Assessment of geology, energy, and minerals (GEM) resources, Big Jacks Creek GRA (ID-010-09), Owyhee County, Idaho
• Assessment of geology, energy, and minerals (GEM) resources, Castle Rock GRA (OR-032-15), Grant, Harney, and Malheur counties, Oregon
• Assessment of geology, energy, and minerals (GEM) resources, Catlow Rim GRA (OR-020-20), Harney County, Oregon
• Assessment of geology, energy, and minerals (GEM) resources, Cedar Mountain GRA (OR-030-17), Malheur County, Oregon
• Assessment of geology, energy, and minerals (GEM) resources, Cedar Ridge GRA (NV-010-05), Elko County, Nevada
• Assessment of geology, energy, and minerals (GEM) resources, Crump Lake GRA (OR-010-25), Lake County, Oregon
• Assessment of geology, energy, and minerals (GEM) resources, Gerry Mountain GRA (OR-050-14), Crook and Deschutes counties, Oregon