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Nature Conservancy Preserves in WV
From the site: "Boundaries of nature preserves in West Virginia. Most of these preserves are under easement or owned by the Nature Conservancy, but this is not always the case.... -
USGS Mineral Resources: Magnetic anomaly maps and data for North America
From the site: "Airborne measurement of the earth's magnetic field over all of North America provides gridded data describing the magnetic anomaly caused by variations in earth... -
USGS Mineral Resources: Aeroradiometric Surveys of North America
From the site: "Data generated by aerial sensing of radiation emanating from the earth's surface provides general estimates of the geographic distribution of Uranium, Thorium,...