Over the past six years, 184 construction workers in the United States were killed because of failure to properly shore or slope an open trench or a pit.
According to OSHA, most accidents occurred in pits and trenches that are five to 10 feet deep.
When soil starts to slip and slide there is no escaping it. A cave-in or dirt slide occurs in less than a second. Workers are instantly buried.
If a worker is trapped at the bottom of a six-foot trench and buried under three feet of soil, 6,000 pounds of pressure are covering...