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. This 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. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

January 8, 1976

MEMORANDUM FOR:  Thomas V. Martin, Area Director, Charleston

Subject:         Penn Line Services, Inc.

Reference is made to your memorandum data December 19, 1975 on the subject title.

The MSA blasting unit described in your correspondence seems to be an electric blasting machine and thus meets the requirements of the electric blasting equipment required by Section 1926.900(r). However, as stated in this section electric blasting machines shall not be used in situations described in Sections 1926.906(a) and (r). The employer shall be warned of the requirement of Section 1926.900(m).

Regional Administrator