[Code of Federal Regulations]

[Title 30, Volume 1]

[Revised as of July 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 30CFR56.6304]



[Page 284]

 

                       TITLE 30--MINERAL RESOURCES

 

  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR

 

PART 56_SAFETY AND HEALTH STANDARDS_SURFACE METAL AND NONMETAL MINES

--Table of Contents

 

                          Subpart E_Explosives

 

Sec.  56.6304  Primer protection.



    (a) Tamping shall not be done directly on a primer.

    (b) Rigid cartridges of explosives or blasting agents that are 4 

inches (100 millimeters) in diameter or larger shall not be dropped on 

the primer except where the blasthole contains sufficient depth of water 

to protect the primer from impact. Slit packages of prill, water gel, or 

emulsions are not considered rigid cartridges and may be drop loaded.