A great source for geology news and they also have a number of interesting and useful resources and maps.
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Western Excelsior Corp.
Western Excelsior Corp. is a manufacturer of rolled erosion control products and sediment retention devices. They also have their own design software. Visit Western Excelsior Corp.
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ReCon Wall Systems, Inc.
ReCon Retaining wall systems provide big block retaining walls. Our concrete retaining wall design, building, construction, and contracting look like natural stones! Visit ReCon Wall Systems, Inc.
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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