ASCE Forums 
Moderated forums with topics of general interest to engineering professionals.
ASTM Interactive Forums
ASTM Standards development forums for task groups
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.
Drillers Place Chat Room
Live chat board in U.S. and Australia
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.
Geo Discussion forum
Geotechnical discussion forum featuring posts which often pertain to tunnelling and other underground construction issues.
Sewer-List
An Internet mailing list for persons employed in the wastewater-treatment business. (Trenchless rehabilitation is frequently discussed.)
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 processing their pipeliners.
Trenchless Information Center Directional Drilling Posting Board
Active bulletin board focused upon directional drilling.
Trenchless Technology Email Forum
A non-commercial, non-profit, free, and unmoderated list for the interactive discussion of all areas related to trenchless technology.
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.
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