Cave-ins pose greatest risk of death/injury for trench & excavation workers. #OSHA can help: http://ow.ly/Tsrp5 pic.twitter.com/8b7QGJsjN6
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@Haselden_6950 there's not one standard for the industry -- it varies by task and the hazards that are present.
@USDOL Thanks for taking the time to respond!
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