Federal Registers
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 1  2011 - 07/28/2011 - Agency Information Collection Activities; Submission for OMB Review; Comment Request; Design of Excavation Cave-in Protection Systems - 76:45297-45298
 2  2011 - 04/06/2011 - Excavations (Design of Cave-in Protection Systems); Extension of the Office of Management and Budget's (OMB) Approval of Information Collection (Paperwork) Requirements - 76: 19129-19131
 3  2008 - 02/13/2008 - Design of Cave-in Protection Systems; Extension of the Office of Management and Budget's (OMB) Approval of Information Collection (Paperwork) Requirements - 73:8374-8375
 4  2005 - 04/07/2005 - Submission for OMB Review: Comment Request - 70: 17718-17719
 5  2004 - 12/07/2004 - Design of Cave-in Protection Systems; Extension of the Office of Management and Budget's (OMB) Approval of Information-Collection Requirements (Paperwork) - 69: 70710-70711
 6  1999 - 04/16/1999 - Office of Management and Budget Control Numbers Under the Paperwork Reduction Act for Miscellaneous Construction Industry Rules. - 64:18809-18810
 7  1998 - 10/07/1998 - Submission for OMB Review; Comment Request - 63:53930-53937
 8  1998 - 07/10/1998 - Design of Cave-in Protection Systems; Information Collection Requirements. - 63:37415-37416
 9  1989 - 10/31/1989 - Excavations; Construction; Trenching; Shoring; Sloping; Benching;Final Rule - 54:45894-45991
 10  1988 - 02/23/1988 - Excavation - 53:5280-82
 11  1987 - 04/15/1987 - Excavation - 52:12288-339
 12  1972 - 11/16/1972 - Trenching - 37:24345

Standard Interpretations
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 1  2009 - 10/13/2009 - Protective system requirements for excavations that will not be entered by employees.
 2  2003 - 12/22/2003 - Registered professional engineer approval requirements for combination trench shield and sloping system trenches with a depth greater than 20 feet.
 3  2003 - 11/14/2003 - Permissibility of installing a trench shield so that the top is flush with the surface.
 4  2003 - 01/16/2003 - Registered professional engineer approval requirements for manufactured trench protection systems deeper than 20 feet.
 5  2001 - 09/21/2001 - Clarification of utility "owner" as used in the Safety and Health Standards for Excavations, Underground Installations.
 6  1996 - 02/01/1996 - Clarification of house foundation/basement excavation;Fall protection requirements.
 7  1995 - 09/07/1995 - Concerns with the OSHA June 30 memorandum concerning the application of 29 CFR 1926.652 to house foundation/basement excavations.
 8  1995 - 06/30/1995 - Suspension of 29 CFR 1926.652 to House Foundation/Basement Excavations.
 9  1995 - 04/05/1995 - Whether or not organic rock, such as "Miami oolite rock" should be considered by OSHA as "stable rock".
 10  1994 - 03/28/1994 - Safety Procedures During Gunite and Shotcrete Pool Construction.
 11  1993 - 02/19/1993 - Plywood as a substitute for meeting the standard.
 12  1992 - 05/21/1992 - Design of Protective Systems in Trenches.
 13  1992 - 05/21/1992 - Design of protective systems for employees working in trenches.
 14  1992 - 05/05/1992 - Excavation standards relating to aluminum rail.
 15  1992 - 04/15/1992 - Use of plywood for shoring and support systems in trenches and excavations.
 16  1991 - 12/02/1991 - Standards addressing excavations
 17  1991 - 10/01/1991 - Classification and subsequent designs may be used if they have been approved by a registered professional engineer.
 18  1991 - 06/05/1991 - Testing of type C soil is not necessary if employees are adequately protected.
 19  1991 - 01/09/1991 - Clarification of Standards
 20  1984 - 10/02/1984 - Interpretation of 1926.652, Table P-2
 21  1980 - 08/04/1980 - Specific Trenching Requirements.
 22  1976 - 09/14/1976 - Specific trenching requirements as it pertains to shoring.
 23  1975 - 11/18/1975 - Clarification of excavations, trenching, and shoring standards.

Regulations (Standards - 29 CFR)
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 1  1926.652 - Requirements for protective systems.