Based in Worcester, MA, NDT Corporation provides nondestructive testing services to assess the condition of bridges, tunnels, pipes, and concrete structures and geophysical testing to assess soil and bedrock foundations.
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Herrenknecht
Herrenknecht is a manufacturer of tunnel boring machines and other tunnel construction technology products. Visit Herrenknecht
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FHWA Geotechnical Engineering Publications
For transportation related geotechnical engineering, these publications are an absolute must! But all practicing geotechs should find something useful. Visit FHWA Geotechnical Engineering Publications
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TXDOT Geotechnical Manual
The purpose of this manual is to guide TXDOT districts in geotechnical investigation and design for project development. Visit TXDOT Geotechnical Manual