#	Letters of Interpretation
1	10/13/2015 - 1910.261(c) - Changes to asbestos warning signs and ANSI warning signs
2	01/22/2013 - 1910.261(g)(12)(ii) - Digester Piping Must Be Secured With Through Bolts
3	09/28/2009 - 1910.261 - OSHA's position on complying with an updated national consensus standard.
4	06/17/1996 - 1910.261 - OSHA accepts employers' use of the ANSI/IES-RP-7-1991 incorporated by reference or adopted into OSHA standards.
5	08/17/1995 - 1910.261 - Batch digester safety in the paper industry.
6	02/07/1995 - 1910.261 - Evaluation of Variance #2272, application for permanent variance and interim order.
7	09/16/1994 - 1910.261 - The relationship between the OSHA standards on Permit-Required Confined Space and Pulp, Paper, and Paperboard Mills
8	07/07/1993 - 1910.261 - Confined Space provisions of 29 CFR 1910.261 in light of the promulgation of 29 CFR 1910.146
9	05/12/1992 - 1910.261 - Heavy-duty pipe, valves and fittings must be used between digesters and blow pits.
10	05/01/1991 - 1910.261 - Calendar stacks used in the pulp and paper industry
11	06/14/1990 - 1910.261(a)(4)(ii) - Interpretation of OSHA standards 1910.261(a)(1) and 1910.261(a)(4)(ii)
12	06/14/1990 - 1910.261(a)(1) - Interpretation of OSHA standards 1910.261(a)(1) and 1910.261(a)(4)(ii)
13	06/14/1990 - 1910.261, 1910.261(a)(1), 1910.261(a)(4)(ii) - Interpretation of OSHA standards 1910.261(a)(1) and 1910.261(a)(4)(ii)
14	11/14/1989 - 1910.261 - OSHA standards that may apply to one-man radio-controlled locomotives in the steel industry.
15	06/16/1982 - 1910.261 - The ASME Pressure Vessel Code.
16	07/13/1978 - 1910.261 - Duplex Rewinder Bar Guards.
17	03/01/1977 - 1910.261(a)(3)(v) - Installation of handrails on mobile belt loader conveyors.
18	01/14/1977 - 1910.261(b)(1) - Interpretation of Lockouts.
19	05/07/1976 - 1910.261(a) - Mills and calendars in the rubber and plastics industries.
20	04/18/1975 - 1910.261(g)(12)(iv) - Requirement to pin or lock digester valves