Version history for: Kropschot, S.J., 2006, USGS Mineral Resources Program; supporting stewardship of America's natural resources, with a section on Evolution of mineral resource assessments by Johnson, Kathleen M.: U.S. Geological Survey Circular 1289, 35 p. [available on the World Wide Web at http://pubs.usgs.gov/circ/2006/1289/ ]. Version 1.0, August 4, 2006 Initial release online at http://pubs.usgs.gov/circ/2006/1289/