Digging-Deep Trenchless Technology 
Extended information and links database relating to trenchless technology.
Directional Boring Central
The primary source of information for directional drilling contractors.
Emerging Construction Technologies - Civil
The purpose of this site is to present Emerging Construction Technologies. A section is dedicated to spotlighting trenchless technologies.
Geoforum.com
A technical information system offered free of charge.
Giglio, Riddle & Associates, Inc.
Represents manufacturers in the industrial and municipal water/wastewater profession. Guide to distributors in Alabama, Mississippi, Louisiana, Tennessee, and the Florida Panhandle.
HDD-Consult.com
An information highway for the trenchless technology industry to search for contacts and information within the experts of our industry.
Microtunneling Resource Center
Microtunneling portal site featuring free email (yourname@microtunneling.com), an email based discussion forum, and microtunneling resource pages.
Newsletters on Trenchless Technology
Newsletters on Drilling Technology Dry Directional Drilling, Rock, Auger, Earth Drilling Boring Machines and Pipe Jacking.
NoDig USA
Horizontal Directional Drilling often called Trenchless technology, HDD related Vortal containing Trenchless information is Nodigusa.com
Public Works Online
Daily news and product updates for professionals in the public works industry- Information on manufacturing, technology, equipment, supplies, and discussion forums, online chat, newsletter and software
Trenchless Data Service
A general trenchless technology website with extensive trenchless new construction information including a very comprehensive directory of construction firms and some information regarding their experience levels. Sections are also being developed regarding pipe rehabilitation.
Trenchless Information Center
A trenchless technology portal with good introductory information regarding the various technologies in use. Has an active bulletin board.
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