40 Foot Sinkhole in Tenn. Stadium Endzone

Geotechnical firm Treadwell and Rollo has performed the geotechnical investigation for the new San Francisco 49ers NFL Stadium to be constructed in Santa Clara, California. In addition to soil borings, CPT and seismic CPT tests […]

On December 22 of 2008, there was a massive failure of a fly ash landfill (tailings dam?) at the Tennessee Valley Authority’s (TVA) Kingston power plant. The failure caused a torrent of coal ash sludge […]

As Dr. Petley noted in his blog post, this looks like a classic planar rock slide where the rock mass failed parallel to the dominant planar discontinuity set. The slide occurred on Highway 70 between […]