» ASCE Forums
   Moderated forums with topics of general interest to engineering professionals.
   http://www.asce.org/forum/allgroups.cfm

» ASTM Interactive Forums
   ASTM Standards development forums for task groups
   http://astmforums20.micronexx.com/

» Boiler Room Steam Forum
   Bulletin board for discussion regarding the use of boilers. This forum is potentially a good resource for trenchless pipeliner contractors who rely upon boiler trucks.
   http://www.boilerroom.com/forum.html

» Drillers Place Chat Room
   Live chat board in U.S. and Australia
   http://drilshop.com/chatroom.html

» Drilshop Bulletin Board (USA)
   The purpose of this bulletin board is for the posting of, exchange of information, news, wanted equipment, and any other points of interest for the drilling industry.
   http://drilshop.com/drilboard/

» Geo Discussion forum
   Geotechnical discussion forum featuring posts which often pertain to tunnelling and other underground construction issues.
   http://www.geoforum.com/contacts/bb/forum/index.asp?Lang=

» Microtunneling Discussion Forum
   Bulletin Board devoted to all microtunneling related topics.
   http://www.microtunneling.com/topics/discussion.html

» Sewer-List
   An Internet mailing list for persons employed in the wastewater-treatment business. (Trenchless rehabilitation is frequently discussed.)
   http://www.swopnet.com/engr/mail_lists/sewer_list_info.html

» Steam-List
   Information about a mailing list for people who work with steam. (This list is not used for discussions of railroads.)This list makes a useful resource for contractors in the pipe rehabilitation industry who use steam generator or boiler trucks for proces
   http://www.swopnet.com/engr/mail_lists/steam_list_info.html

» Trenchless Information Center Directional Drilling Posting Board
   Active bulletin board focused upon directional drilling.
   http://www.no-dig.net/forums/trench/index.html

» Trenchless Technology Email Forum
   A non-commercial, non-profit, free, and unmoderated list for the interactive discussion of all areas related to trenchless technology.
   http://www.topica.com/lists/trenchless/

» Water Environment Federation: Collection Systems Bulletin Board
   This bulletin board is for any topic related to collections systems, and frequently has discussion threads related to pipe rehabilitation, SSOs, CSOs, and other topics of interest to trenchless technology professionals.
   http://www.wef.org/Forums/Index.cfm?cfapp=7