Slope stabilization, rockfall mitigation, drilling, soil nails, caissons and limited access drilling. They have a number of walking excavators or spiders to get at some pretty hairy areas.
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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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Geosyntec Consultants
Consulting engineers and scientists working in a broad area of geotechnical engineering, water resources, and environmental contamination studies and remediations. Visit Geosyntec Consultants
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Layne GeoConstruction
Layne GeoConstruction specializes in jet grouting, micropiles, high and limited mobility grouting and anchors, utilizing real-time monitoring; vibro compaction and stone columns. Visit Layne GeoConstruction