Suggested citation and version history for Nathenson, Manuel, 2008, Publications of the Volcano Hazards Program 2006: U.S. Geological Survey Open- File Report 2008-1006, 12 p. [http://pubs.usgs.gov/of/2008/1006/]. Version 1.0, January 14, 2008 Initial release online at http://pubs.usgs.gov/of/2008/1006/