053-4 Wyo. Code R. § 75.1434
Unless damage or deterioration is removed by cutoff, wire ropes shall be removed from service when any of the following conditions occurs:
(a) The number of broken wires within a rope lay length, excluding filler wires, exceeds either--
(b) On a regular lay rope, more than one broken wire in the valley between strands in one rope lay length;
(c) A loss of more than one-third of the original diameter of the outer wires;
(d) Rope deterioration from corrosion;
(e) Distortion of the rope structure;
(f) Heat damage from any source;
(g) Diameter reduction due to wear that exceeds six percent of the baseline diameter measurement; or
(h) Loss of more than ten percent of rope strength as determined by nondestructive testing.
053-4 Wyo. Code R. § 75.1434