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Virginia Administrative Code (Last Updated: January 10, 2017) |
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Title 4. Conservation and Natural Resources |
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Agency 25. Department of Mines, Minerals and Energy |
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Chapter 40. Safety and Health Regulations for Mineral Mining |
Section 4360. Diameter specifications
Latest version.
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Diameters of head sheaves and hoist drums shall conform to the following specifications:
Rope construction
Diameter of sheave and drum
Recommended
Times rope diameter
Minimum
Times rope diameter
6 x 7 classification
72
42
6 x 19
45
30
6 x 37
20
18
6 x 25 type B, flattened strand
45
30
6 x 27 type H, flattened strand
45
30
6 x 30 type G, flattened strand
45
30
18 x 7 classification
51
34
Historical Notes
Derived from VR480-05-1.2 § 15.160, eff. July 19, 1989.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code of Virginia.