Mine plants and operations for commodities monitored by the National Minerals Information Center of the USGS. Operations included are those considered active in 2003 and surveyed by the USGS.
A GIS database of geologic units and structural features in Alabama, with lithology, age, data structure, and format written and arranged just like the other states.
A GIS database of geologic units and structural features in Alaska, with lithology, age, data structure, and format written and arranged just like the other states.
Outlines of 1:250,000 scale map quadrangles in Alaska for use as a geographic reference within Google Earth or other software capable of interpreting KML, with links to additional mineral resource-related geoscientific information produced by USGS.
A comprehensive database of Alaskan mineral deposits compiled from the published literature and from unpublished reports and data from industry, the US Bureau of Land Management, and USGS.
A GIS database of geologic units and structural features in Arizona, with lithology, age, data structure, and format written and arranged just like the other states.
A GIS database of geologic units and structural features in Arkansas, with lithology, age, data structure, and format written and arranged just like the other states.
Measurements of the gravitational field vary slightly from place to place due to the composition and structure of Earth's crust. This digital grid describes the Bouguer gravity anomaly for the conterminous US.
A GIS database of geologic units and structural features in California, with lithology, age, data structure, and format written and arranged just like the other states.