MSHA - Code of Federal Regulations - 30 CFR 57.6960
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MSHA - Title 30 CFR
30 CFR § 57.6960
Mixing of explosive material.


GENERAL REQUIREMENTS--UNDERGROUND ONLY

(a) The mixing of ingredients to produce explosive material shall not be conducted underground unless prior approval of the MSHA district manager is obtained. In granting or withholding approval, the district manager shall consider the potential hazards created by--

(1) The location of the stored material and the storage practices used;

(2) The transportation and use of the explosive material;

(3) The nature of the explosive material, including its sensitivity;

(4) Any other factor deemed relevant to the safety of miners potentially exposed to the hazards associated with the mixing of the bulk explosive material underground.

(b) Storage facilities for the ingredients to be mixed shall provide drainage away from the facilities for leaks and spills.


[58 FR 69596, Dec. 30, 1993]