Denver, CO: U.S. Department of the Interior, Bureau of Mines, SP 4-88, 1988 Jan; :1-99
The U.S. Bureau of Mines inventoried federal lands in the state of Oregon and classified them in detail, section by section, according to their availability for mineral exploration and development as affected by legal status and agency management practices. The Bureau determined areas of the state having past mineral production and/or known metallic mineral resources and areas favorable for coal, oil, gas, and geothermal resources, and prepared maps that spatially compare the availability of federal mineral land with these mineral areas to demonstrate the extent of restrictions to mineral entry. Oregon contains 62.1 million acres, of which 33.9 million acres, or 55 pct, is federal mineral land. About 2.3 million acres of federal land is favorable for selected metallic mineral deposits, of which 64 pct is available, 13 pct is restricted, and 23 pct is unavailable. Of the 21.1 million acres of federal leasable land favorable for oil and gas, 68 pct is available, 11 pct is restricted, and 21 pct is unavailable. Of the 146,720 acres favorable for coal, approximately 71 pct is available, 13 pct is restricted, and 16 pct is unavailable. Federal leasable land favorable for geothermal resources amounts to 458,968 acres, of which 42 pct is available, 34 pct is restricted, and 24 pct is unavailable.
Denver, CO: U.S. Department of the Interior, Bureau of Mines, SP 4-88