RST Instruments Ltd. Is an established world leader in the manufacturing of quality geotechnical, mining, and structural monitoring equipment.
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Geotechnical Engineering Directory
They claim to be the most comprehensive Geotechnical Engineering directory on the web. Around since 1999. Visit Geotechnical Engineering Directory
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Pile Dynamics, Inc.
Software and equipment manufacturing company for testing and analysis of deep foundations, especially driven piles. Visit Pile Dynamics, Inc.
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Geology.com
A great source for geology news and they also have a number of interesting and useful resources and maps. Visit Geology.com