30 CFR § 57.19019
AUTHORITY: § 101, Federal Mine Safety
and Health Act of 1977, Pub. L. 91-173 as amended by Pub. L. 95-164, 91 Stat.
1291 (30 U.S.C. 811).
If guide ropes are used in shafts for personnel hoisting applications other
than shaft development, the nominal strength (manufacturer's published
catalog strength) of the guide rope at installation shall meet the minimum
value calculated as follows: Minimum value = Static Load x 5.0.