Version history for


  Phelps, Geoffrey A., Justet, Leigh, Moring, Barry C., and 
       Roberts, Carter W., 2005, A preliminary 
       investigation of the structure of southern Yucca 
       Flat, Massachusetts Mountain, and CP basin, Nevada 
       Test Site, Nevada, based on geophysical modeling:  
       U.S.  Geological Survey Open-File Report 2005-1367 
       [http://pubs.usgs.gov/of/2005/1367/]


  Version 1.1, March 4, 2008

  Added the appendixes for gravity and magnetic data that 
  are mentioned in the text

  Added depth data to this report that are not mentioned in 
  the text; see the metadata for details.


  Version 1.0, March 20, 2006

  Initial release online at
  http://pubs.usgs.gov/of/2005/1367/