45.1-161.154 - Hoisting ropes.
§ 45.1-161.154. Hoisting ropes.
A. Hoisting ropes on all cages or trips shall be adequate in size to handlethe load and have a proper factor of safety. Ropes used to hoist or lowercoal and other materials shall have a factor of safety of not less than fiveto one; ropes used to hoist or lower miners shall have a factor of safety ofnot less than 10 to one.
B. The hoisting rope shall have at least three full turns on the drum whenextended to its maximum working length. The rope shall make at least one fullturn on the drum shaft or around the spoke of the drum, in case of a freedrum, and be fastened securely by means of clamps.
C. The hoisting rope shall be fastened to its load by a spelter-filled socketor by a thimble and adequate number of clamps properly spaced and installed.
D. Any cage, man-car, or trip used for hoisting or lowering men with a singlerope shall be provided with two bridle chains or wire ropes connectedsecurely to the rope at least three feet above the socket or thimble and tothe crosspiece of the cage or to the man-car or trip.
E. When equipment or supplies are being hoisted or lowered in the slope,safety chains or wire ropes shall be provided and connected securely to thehoist rope. In addition, visible or audible warning devices shall beinstalled in the slope where they may be seen or heard by persons approachingthe slope track entry from any access.
(Code 1950, § 45-68.4; 1954, c. 191; 1966, c. 594, §§ 45.1-68, 45.1-89.1;1972, c. 784; 1978, c. 729; 1983, c. 111; 1994, c. 28; 2005, c. 3.)