#	Letters of Interpretation
1	03/31/2010 - 1926.552(c)(7) - Single-point suspension scaffold safety.
2	03/31/2010 - 1926.552, 1926.552(c)(7) - Single-point suspension scaffold safety.
3	03/27/2006 - 1926.552(c)(16) - Construction requirements for personnel hoists; applicability of ANSI A10.4-2004.
4	06/02/1998 - 1926.552 - Requirements for use of ladder hoisting wheels.
5	02/07/1995 - 1926.552 - Hoisting personnel into and out of drilled shafts with a drill rig.
6	09/24/1993 - 1926.552(c)(3) - Free standing/boom supported personnel hoist.
7	10/27/1992 - 1926.552 - Standards applying to ground-supported tower type hoists.
8	02/13/1992 - 1926.552 - Permanent Variance to the tie-in requirements for personnel/material hoists.
9	04/07/1987 - 1926.552 - Employees engaged in erection, may ride a material hoist to gain access or egress to their work during the erection.
10	08/20/1982 - 1926.552(c)(3) - Personnel Hoists.
11	02/13/1981 - 1926.552 - Height of enclosures for cantilever type personnel hoists.
12	11/20/1979 - 1926.552 - Platform support wire ropes with automatic safety locking devices as an alternate to a safety belt attached to cable for covered elevators.
13	05/08/1978 - 1926.552 - Regulations applicable to cantilever type personnel hoists.
14	04/14/1978 - 1926.552 - Personnel hoists.
15	02/17/1978 - 1926.552 - Safety aspects of personnel and material hoists.
16	11/10/1976 - 1926.552 - Hoisting devices known as "elevators" on well drilling rigs.