| euca.com | Engineering & Utility Contractors Association (EUCA) |
| nastt.org | North American Society for Trenchless Technology (NASTT) |
| ieee.org | IEEE Working Group 11-28: Guided Boring Installation of Cable and Conduit |
| dca-online.org | Distribution Contractors Association |
| trenchless-technology.org | Northwest Chapter - NASTT |
| astm.org | ASTM Committee F-17 on Plastic Piping Systems |
| acuus.qc.ca | Associated Research Centers for the Underground Urban Space [ACUUS] |
| gstt.de | GSTT - German Society for Trenchless Technology e.V. |
| concrete-pipe.org | American Concrete Pipe Association |
| asce.org | American Society of Civil Engineers [ASCE] |
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