Homepage for one of the best free resources for engineering geologists, the USBR Engineering Geology Field Manual. They also have information on Terrestrial 3d Photogrammetry and LIDAR for rock mass characterization and other applications.
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TEI Rock Drills
TEI Rock Drills Inc. manufactures drilling attachments and limited access drill rigs for the construction, mining, fencing and geothermal industries. Visit TEI Rock Drills
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Densification, Inc. – Geotechnical specialists in Dynamic Compaction
Geotechnical specialists in Dynamic Compaction headquartered in Paeonian Springs, Virginia. Visit Densification, Inc. – Geotechnical specialists in Dynamic Compaction
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Arizona Geology
Blog of Lee Allison, Arizona State Geologist. Visit Arizona Geology