1. When used in or about mines other than coal mines, explosives and detonators shall
be stored in separate surface magazines reasonably bulletproof and adequately constructed
of incombustible material, with no metal exposed inside the magazine and equipped
with doors constructed of three-eighths inch steel plate lined with a two-inch thickness
of wood, or the equivalent. Such magazines shall be provided with no opening except for entrance and ventilation,
shall be kept locked securely when unattended, and shall be provided with suitable
warning signs. The location of permanently constructed surface magazines shall be not less than
two hundred feet from any mine opening, unless effectively barricaded.
2. Underground section boxes or magazines shall be of substantial construction and
placed in a crosscut or idle room neck at least twenty-five feet from roadways or
trolley wires and at least two hundred feet from an active working place, and in a
reasonably dry place. Explosives and detonators shall be stored underground in separate section boxes
3. The transportation, storage or use of black blasting powder in underground mines
4. The operator of a noncoal mine shall determine the maximum supply of explosives
that may be stored in his mine, not to exceed an amount to meet the estimated requirements
of the succeeding fourteen days; except that a lesser or greater amount may be stored
in the mine on approval of the director, or on order of the director.
5. No explosives shall be stored in any place in any mine where its accidental discharge
would cut off or obstruct the escape of miners working therein.
6. The method of storing, keeping, moving, charging and firing, or of using explosives
or detonators in a mine, except as otherwise provided in this section, shall be in
accordance with rules prescribed by the director.
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