One cubic yard of soil can weigh as much as a car. The pressure on a victim’s chest can make it impossible for him or her to breathe, even if his or her head is above the level of the collapsed soil.
- A worker in Westmount, Quebec was buried in a trench next to a house when the wood retaining wall collapsed on him, as did soil and paving stone.
- Colleagues got him out in 90 seconds, but he succumbed to his injuries shortly afterwards. https://www.ohscanada.com/features/going-underground-2/
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