December 2012 - Holiday Social at President Kelly Sullivan's home

October 2012 - Movie Night, screening "Atomic City" and "Into Eternity" co-sponsored with the Battelle Film Club

December 2011 - holiday party

October 2011 - Moore Observatory Tour

October 2010 - Ice Age Floods Bus Tour

December 2009 - joint holiday party and wine tasting with American Chemical Society 

August 2009 - Jet Boat Tour of the Hanford Reach

September 2008 - tour of LIGO (Laser Interferometer Gravitational Observatory)