Fifth ISSM, September 8-13, 2002, Copenhagen, Denmark. Organizers: Hans-Jørgen Albrechtsen, Jens Aamand.
Fourth ISSM, August 22-27, 1999, Vail, Colorado, USA. Organizers: Ronald Harvey, Richard Smith.
Third ISSM, September 15-21, 1996, Davos, Switzerland., Organizer: Reinhard Bachofen.
Second ISSM, September 21-24, 1993, Bath, UK. Organizer: David Balkwill.
First ISSM*, January 15-19, 1990, Orlando, Florida, USA. Organizers: Carl Fliermans, Terry Hazen.
*Official name was “First International Conference on Microbiology of the Deep Subsurface”
Photo courtesy of M. Dornblaser, USGS. Vail, Colorado, USA, site of the 4th ISSM in 1999.