WVC 22 A- 2 - 32
§22A-2-32. Underground storage of explosives.
Explosives and detonators stored underground shall be kept
in section boxes or magazines of substantial construction with no
metal exposed on the inside, and be located at least fifteen feet
from roadways and power wires in a well rock-dusted location,
protected from falls of roof. If not kept in separate boxes or
magazines not less than five feet apart, they may be kept in the
same box or magazine if separated by at least a four-inch
hardwood partition or the equivalent. Not more than a forty-eight hour supply of explosives or detonators shall be stored
underground in section boxes or magazines. These boxes or
magazines shall be kept at least one hundred feet from the faces
and out of the direct line of blasting.