Section 56.6131 - Location of explosive material storage facilities(a) Storage facilities for any explosive material shall be- (1) Located so that the forces generated by a storage facility explosion will not create a hazard to occupants in mine buildings and will not damage dams or electric substations; and(2) Detached structures located outside the blast area and a sufficient distance from powerlines so that the powerlines, if damaged, would not contact the magazines.(b) Operators should also be aware of regulations affecting storage facilities in 27 CFR part 55 , in particular, 27 CFR 55.218 and 55.220 . This document is available at any MSHA Metal and Nonmetal Safety and Health district office.