Revision History for USGS 
  Scientific Investigations Report 2012-5157

  Dan L. Mosier, Donald A. Singer, Barry C. Moring, and 
  John P. Galloway

  Podiform Chromite Deposits--Database and Grade and 
  Tonnage Models

  -----------------------------------------------------
  Posted online at http://pubs.usgs.gov/sir/2012/5157/
  August 15, 2012

  -----------------------------------------------------