#	Regulations
1	01/17/2017 - 1910.21 - Scope and definitions.

#	Federal Register
1	11/18/2016 - 1910.21 - 81:82494-83006 - Walking-Working Surfaces and Personal Protective Equipment (Fall Protection Systems) - PDF
2	09/30/1998 - 1910.21 - 63:52298-52300 - Submission for OMB Review; Comment Request - PDF
3	06/26/1998 - 1910.21 - 63:34933-34934 - Walking-Working Surfaces; Information Collection Requirements. - PDF
4	07/18/1990 - 1910.21 - 55:29224-29 - Extension of Written Comment Period and Scheduled Hearing on Proposed Rule on Walking and Working Surfaces and Personal Protective Equipment (Fall Protection Systems)

#	Standard Interpretations
1	07/23/2007 - 1910.21, 1910.21(e)(1) - Cross-member supports used for climbing communication towers are not fixed ladders under 1910.268(h).
2	12/16/2003 - 1910.21, 1910.21(a)(1) - Additional fall protection requirements for concrete trucks when work platforms are equipped with guardrails and toeboards.
3	04/02/1996 - 1910.21, 1910.21(e)(2) - Portable ladders.
4	01/15/1993 - 1910.21 - Protective devices for ladderway openings.
5	04/19/1977 - 1910.21 - Walking surface platforms attached to a billboard.