Mine Safety and Health Administration (MSHA) - Code of Federal Regulations - 30 CFR 56.6403
skip navigational linksDepartment of Labor Seal U.S. Department of Labor
Mine Safety and Health Administration
Protecting Miners' Safety and Health Since 1978		 Photos representing the mining workforce
www.msha.gov
[skip navigational links] Search MSHA Advanced Options | A to Z | Help
Find It! in DOL | Compliance Assistance |   
 
MSHA - Title 30 CFR
30 CFR § 56.6403

Branch circuits.

(a) If electric blasting includes the use of branch circuits, each branch shall be equipped with a safety switch or equivalent method to isolate the circuits to be used.

(b) At least one safety switch or equivalent method of protection shall be located outside the blast area and shall be in the open position until persons are withdrawn.

[58 FR 69596, Dec. 30, 1993]




Back to Top   Back to Top www.msha.gov www.dol.gov
Mine Safety and Health Administration (MSHA)
1100 Wilson Boulevard, 21st Floor
Arlington, VA 22209-3939		 Phone:    (202) 693-9400
Fax-on-demand: (202) 693-9401
Technical (web) questions: Webmaster
On-line Filing Help: MSHAhelpdesk@dol.gov
or call (877) 778-6055
Contact Us