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- All Subjects: Grand Canyon National Park (Ariz.)
- All Subjects: Geology
- Creators: Fred Harvey
- Creators: Hamilton, Ed
- Creators: Edwards, John H.
This summary report overviews a State of Arizona and U. S. Department of Energy funded drilling project to determine if near-term hot dry rock (HDR) geothermal potential exists in the eastern portion of the White Mountains region of Arizona. A 4,505 feet deep slim-hole exploratory well, Alpine1/Federal, was drilled within the Apache-Sitgreaves National Forest at Alpine Divide near the Alpine Divide camp ground about 5 miles north of Alpine, Arizona in Apache County (Figure 1). A comprehensive technical report, in two parts, details the results of the project. Part 1, Alpine1/Federal, Drilling Report, discusses the drilling operations,
logging program, permitting and site selection for the hole. Part 2, Temperature Gradients, Geothermal Potential, and Geology, summarizes the temperature gradients, heat flow, geothermal potential, and subsurface geology.
Letter from Ed Hamilton to Carl Hayden outlining his opposition to Superintendent Tillotson's report on the road between Grand Canyon Village and Rowe's Well.
Letter from Ed Hamilton to Carl Hayden requesting maintenance for the road between Grand Canyon Village and Rowe's Well.
Letter from Ed Hamilton to Carl Hayden regarding the storage of dynamite in Shoski Canyon.