general contractor
trench
failure to instruct
hard hat
ladder
egress
access
spoil pile
competent person
29 CFR §1926.652(a)(1)
29 CFR §1926.21(b)(2)
29 CFR §1926.100(a)
29 CFR §1926.651(c)(2)
29 CFR §1926.651(j)(2)
29 CFR §1926.651(k)(1)

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