Letters of Interpretation | Occupational Safety and Health Administration

Letters of Interpretation

OSHA requirements are set by statute, standards, and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. Each letter constitutes OSHA's interpretation of the requirements discussed.

Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information.

These letters of interpretation and the standards they address may not apply to OSHA State Plans. State Plans are required to have standards and enforcement programs that are at least as effective as OSHA's and may have different or additional requirements. Please see OSHA-approved State Plans for more information.

NOTICE:

How to Request a Letter of Interpretation

Date	Title	Standard Number
05/24/1976	Personnel Protective Equipment - Steel Erection.	1926 - Table of Contents
05/24/1976	Clarification of the requirements under the OSHA Standard 1910.166(c)(3)(i)(a) as opposed to the requirement of 1910.166(d)(1).	1910.166
05/21/1976	Airborne mixtures containing less than 1.0 or 0.1 percent of a carcinogen are exempt	1910.1003, 1910.1016
05/20/1976	Sewing machine guards.	1910.212
05/20/1976	The use of hard hats in a warehouse operation.	1910.132, 1910.135
05/17/1976	Electrostatic Paint Spraying.	1910.94, 1910.107
05/17/1976	Whether liquified flammable gases are considered as included under the requirements of Flammable and Combustible Liquids.	1910.106
05/14/1976	A variance from Machine Guarding, Point of Operation Guarding.	1910.212(a)(3)(iii)
05/07/1976	Mills and calendars in the rubber and plastics industries.	1910.261(a)
04/28/1976	Reconditioning of large crane hooks for overhead cranes.	1910.179
04/19/1976	Use of Mapp gas, oxygen, and acetylene in a tunnel.	1926.155(j), 1926.800(c)
04/16/1976	Methylacetylene-propadiene, stabilized, by definition, is not a liquefied petroleum gas, but is considered as a fuel gas	1926.350, 1926.800
04/16/1976	Phototropic lenses in safety eye wear.	1910.133
04/15/1976	The handling, Storing and Use of MAPP Gas in Underground Construction Work.	1926.155, 1926.800
04/06/1976	Clarification of temporary vs. portable lighting.	1926.405(a)(2)(ii)(G)
04/06/1976	Rollover Protective Structures on skid-steer loaders used in agricultural operations.	1926.1000(a)(2), 1928.51(b)(1)
04/02/1976	Approval of first aid kits.	1910.151
04/02/1976	Subpart O -- Machinery and Machine Guarding, Mechanical Power-Transmission Apparatus.	1910.219(b)(2)
03/31/1976	"Sankey Toe Caps" instead of safety shoes is acceptable.	1910.132(a)
03/29/1976	Underwriters Laboratories and Factory Mutual Research Corp. test and list approved containers.	1926.152, 1926.155