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From the Blog
- Helium exploration and exploitation in the Holbrook Basin, Arizona
- NEW Digital Geologic Maps in 2022: Mohave and Graham Counties
- Organ Pipe Cactus National Monument established 13 April 1937
- Critical Minerals in World War 2
- Geology & Geochronology of four 7.5' quadrangles straddling the southern border of AZ - CA