§ 870. — Trolley wires and trolley feeder wires.
[Laws in effect as of January 24, 2002]
[Document not affected by Public Laws enacted between
January 24, 2002 and December 19, 2002]
[CITE: 30USC870]
TITLE 30--MINERAL LANDS AND MINING
CHAPTER 22--MINE SAFETY AND HEALTH
SUBCHAPTER III--INTERIM MANDATORY SAFETY STANDARDS FOR UNDERGROUND COAL
MINES
Sec. 870. Trolley wires and trolley feeder wires
(a) Intervals for cutoff switches
Trolley wires and trolley feeder wires shall be provided with cutout
switches at intervals of not more than 2,000 feet and near the beginning
of all branch lines.
(b) Overcurrent protection devices
Trolley wires and trolley feeder wires shall be provided with
overcurrent protection.
(c) Location of wires
Trolley wires and trolley feeder wires, high-voltage cables and
transformers shall not be located inby the last open crosscut and shall
be kept at least 150 feet from pillar workings.
(d) Adequate insulation and guard devices; promulgation of safety
guidelines
Trolley wires, trolley feeder wires, and bare signal wires shall be
insulated adequately where they pass through doors and stoppings, and
where they cross other power wires and cables. Trolley wires and trolley
feeder wires shall be guarded adequately (1) at all points where men are
required to work or pass regularly under the wires; (2) on both sides of
all doors and stoppings; and (3) at man-trip stations. The Secretary or
his authorized representatives shall specify other conditions where
trolley wires and trolley feeder wires shall be adequately protected to
prevent contact by any person, or shall require the use of improved
methods to prevent such contact. Temporary guards shall be provided
where trackmen and other persons work in proximity to trolley wires and
trolley feeder wires.
(Pub. L. 91-173, title III, Sec. 310, Dec. 30, 1969, 83 Stat. 783.)
Section Referred to in Other Sections
This section is referred to in section 861 of this title.
