Heavy loads: Soil exerts tremendous pressure during cave-ins

Amy Materson (EQW)
May 14, 2014
Updated May 15, 2014
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The accident: Working in the December cold, a utility construction worker was helping install a sewer line in a 25- to 30-foot-deep trench. A steel trench box was in the excavation but was not large enough to reach the bottom of the trench.

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