osha module 11 Questions and Correct
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Graded
___ soil has a high clay content and is very durable and strong
Ans: cohesive
___ refers to the soil removed from an excavation
Ans: spoils
which of the following is an example of the dangers posed by
excavations?
Ans: all the above
oxygen concentration in the air is considered deficient if ti drops
below
Ans: 19.5%