#	Letters of Interpretation
1	03/03/2010 - 1926.451(b)(3) - Whether guardrails are required on a two-point adjustable scaffold while workers who are tied off are painting the undercarriage of a water storage tank.
2	09/14/2006 - 1926.451(b)(3) - Guardrail requirements for two point suspension scaffolds.
3	04/16/2002 - 1926.451(b)(3)(ii) - Planking, safety line, and personal fall arrest system requirements for tank builder's scaffolding.
4	04/16/2002 - 1926.451(b)(3)(i) - Planking, safety line, and personal fall arrest system requirements for tank builder's scaffolding.
5	04/16/2002 - 1926.451(b)(3), 1926.451(b)(3)(i), 1926.451(b)(3)(ii) - Planking, safety line, and personal fall arrest system requirements for tank builder's scaffolding.
6	12/11/2001 - 1926.451(b)(3) - Exemptions for installation of guardrails on wall (interior) side.
7	04/10/2001 - 1926.451(b)(3)(ii) - Requirements of Interim Fall Protection Compliance Guidelines for Residential Construction for guardrails and fall protection during roofing work.
8	04/10/2001 - 1926.451(b)(3)(i) - Requirements of Interim Fall Protection Compliance Guidelines for Residential Construction for guardrails and fall protection during roofing work.
9	04/10/2001 - 1926.451(b)(3), 1926.451(b)(3)(i), 1926.451(b)(3)(ii) - Requirements of Interim Fall Protection Compliance Guidelines for Residential Construction for guardrails and fall protection during roofing work.
10	01/22/2001 - 1926.451(b)(3)(ii) - Application of 1926.451(b)(3)(ii) to "Drivit" (synthetic stucco) systems.