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50 FR 4082, Jan. 29, 1985, unless otherwise noted.
53 FR 32526, Aug. 25, 1988, unless otherwise noted.
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To provide for the safe movement of self-propelled mobile equipment—
(a) Rules governing speed, right-of-way, direction of movement, and the use of headlights to assure appropriate visibility, shall be established and followed at each mine; and
(b) Signs or signals that warn of hazardous conditions shall be placed at appropriate locations at each mine.