|1||2003 - 10/23/2003 - Use of hydro-vacuum excavation equipment and other acceptable means to locate underground utility installions.|
|2||2001 - 09/21/2001 - Clarification of utility "owner" as used in the Safety and Health Standards for Excavations, Underground Installations.|
|3||1995 - 09/21/1995 - Use of explosion proof certified equipment inside of pipes and manholes.|
|4||1995 - 08/10/1995 - Fall protection requirements where employees are required or permitted to cross over excavations.|
|5||1993 - 09/23/1993 - Confined space standard for general industry.|
|6||1991 - 11/19/1991 - Requirement for Air Sampling in trenches.|
|7||1991 - 01/09/1991 - Clarification of Standards|
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