#	Regulations
1	General requirements.

#	Letters of Interpretation
1	02/03/1999 - 1910.252(c) - Correct placement of air sampling cassettes on employees performing welding operations.
2	05/12/1997 - 1910.252(c)(10) - Introduction of electrical welding equipment into a non-permit confined space.
3	05/12/1997 - 1910.252(c)(9) - Introduction of electrical welding equipment into a non-permit confined space.
4	05/12/1997 - 1910.252(c)(4) - Introduction of electrical welding equipment into a non-permit confined space.
5	03/22/1995 - 1910.252(c) - Sampling for lead welding fumes.
6	08/27/1993 - 1910.252(c) - Enforcement of ventilation requirements for welding operations.