#	Federal Register
1	07/16/2024 - 1910.146(d)(5)(vi), 1910.146(d), 1910.146(d)(3), 1910.146(d)(14) - 89:57944-57946 - Permit-Required Confined Spaces Standard; Extension of the Office of Management and Budget's (OMB) Approval of Information Collection (Paperwork) Requirements - PDF
2	06/23/2021 - 1910.146(d), 1910.146(d)(3), 1910.146(d)(5)(vi), 1910.146(d)(14) - 86:32978-32980 - Permit-Required Confined Spaces; Extension of the Office of Management and Budget's (OMB) Approval of Information Collection (Paperwork) Requirements - PDF
3	05/22/2018 - 1910.146(d), 1910.146(d)(5)(vi), 1910.146(d)(14) - 83:23724-23726 - Permit-Required Confined Spaces; Extension of the Office of Management and Budget's (OMB) Approval of Information Collection (Paperwork) Requirements - PDF
4	04/27/2015 - 1910.146(d), 1910.146(d)(5)(vi), 1910.146(d)(14) - 80:23297-23300 - Permit-Required Confined Spaces; Extension of the Office of Management and Budget's (OMB) Approval of Collection of Information (Paperwork) Requirements - PDF

#	Letters of Interpretation
1	07/24/2023 - 1910.146(d) - Confined Space Entry Permits
2	04/15/2014 - 1910.146(d) - Centralized Monitoring for Permit-Required Confined Spaces
3	05/12/2009 - 1910.146(d), 1910.146(d)(5) - Applicability of the PRCS standard to aircraft maintenance activities.
4	04/12/1996 - 1910.146(d) - Confined spaces: use of rescue-type SCBAs; maintenance vs. construction
5	09/19/1994 - 1910.146(d), 1910.146(d)(11) - Elevator industry employees working in and around pits and equipment.

#	Regulations
1	07/24/2003 - - Permit-required confined spaces