#	Letters of Interpretation
1	04/24/2012 - 1910.253 - NRTL requirements for shielding gas regulators.
2	08/30/2006 - 1910.253, 1910.253(b)(5)(ii)(A) - Use of the BoaGripTM sling to move compressed-gas cylinders in general industry.
3	05/12/2006 - 1910.253, 1910.253(b)(5)(ii)(B), 1910.253(b)(5)(ii)(D), 1910.253(b)(5)(ii)(I) - Use of the "Regulator Umbrella" for "in use" or "connected for use" conditions for portable compressed gas cylinders.
4	05/10/2006 - 1910.253, 1910.253(b)(2), 1910.253(b)(3), 1910.253(b)(4) - Storage of oxygen and acetylene cylinders for construction vs. general industry.
5	05/08/2006 - 1910.253, 1910.253(b)(2), 1910.253(b)(3), 1910.253(b)(4) - General industry and construction standards regarding "in use" or "ready to use" and "storage" of compressed gas and oxygen cylinders for welding; §1910.253(b)(2)-1910.253(b)(4) and §1926.350(a)(10).
6	09/09/1993 - 1910.253 - Movement of compressed gas cylinders with regulators installed and "special truck" requirement
7	04/20/1992 - 1910.253 - Temporary storage carrier for oxygen and acetylene cylinders.
8	02/06/1992 - 1910.253 - Maintaining Workplace Acetylene Cylinders
9	01/28/1992 - 1910.253 - Flashback Arrestors and Backflow Protective Equipment for Welding Operations.

#	Federal Register
1	03/08/2012 - 1910.253 - 77:13969-13970 - Revising Standards Referenced in the Acetylene Standard - PDF
2	11/10/2009 - 1910.253 - 74:57883-57884 - Revising Standards Referenced in the Acetylene Standard - PDF
3	06/20/1990 - 1910.253 - 55:25093-94 - Welding, Cutting and Brazing; Technical Amendments to Final Rule

#	Regulations
1	03/13/2001 - 1910.253 - Oxygen-fuel gas welding and cutting.