trench collapse...it happens that quickly Ed Davidson There ya have it 0:19 2 years ago 54 131 Скачать Далее
Most Excavation Fatalities Are Caused By Cave-Ins Cat® Products 0:52 11 years ago 115 630 Скачать Далее
Arizona man rescued from collapsed trench, was buried under 30 feet of dirt FOX 10 Phoenix 0:38 1 year ago 11 603 Скачать Далее
Safety in the Trenches: An Overview of Basic Trench Safety Laborers' Health & Safety Fund of North America 3:42 11 months ago 12 677 Скачать Далее
2 men charged in fatal construction site trench collapse in Vernon FOX 61 2:15 1 year ago 35 892 Скачать Далее
