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Question 1 of 3
1. Question
As a general rule, it is best to blow fresh air into a trench vs. exhausting the air out of the trench.
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Question 2 of 3
2. Question
Guardrails are not required on walkways over trenches.
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Question 3 of 3
3. Question
Access to a ladder needs to be within 25 feet in a trench.
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