In any new mine, or any old mine that may be reopened and reequipped after the effective date of this act, the potential of the trolley system shall not exceed three hundred volts.
52 P.S. § 70-1124
In any new mine, or any old mine that may be reopened and reequipped after the effective date of this act, the potential of the trolley system shall not exceed three hundred volts.
52 P.S. § 70-1124