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# Federal Register
1 - 80:25365-25526 - Confined Spaces in Construction; Final Rule - PDF
2 - 54:45894-45991 - Excavations; Construction; Trenching; Shoring; Sloping; Benching;Final Rule
3 - 53:5280-82 - Excavation
4 - 52:12288-339 - Excavation