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| # | Federal Register |
|---|---|
| 1 | - 1926.652(b)(3) - 85:67013-67015 - Excavations (Design of Cave-in Protection Systems); Extension of the Office of Management and Budget's (OMB) Approval of Information Collection (Paperwork) Requirements - PDF |
| # | Regulations |
|---|---|
| 1 | - - Requirements for protective systems. |
| # | Standard Interpretations |
|---|---|
| 1 | - 1926.652(b)(3) - Registered professional engineer approval requirements for combination trench shield and sloping system trenches with a depth greater than 20 feet. |
