took them awhile to post PDF documents
http://www.lpi.usra.edu/opag/feb2010/prese...ions/index.html
http://www.lpi.usra.edu/opag/feb2010/prese...mmelDecadal.pdf
http://www.lpi.usra.edu/opag/feb2010/prese...ncerDecadal.pdf
http://www.lpi.usra.edu/opag/feb2010/prese...Exploration.pdf
and more...........................
EDIT
some interesting links from OPAG documents
http://sites.nationalacademies.org/SSB/
http://sites.nationalacademies.org/SSB/CurrentProjects/