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The 11 mm diam 8 x 19 fiber-core rope, constructed from improved plow steel wire, on the cleaning-line crane failed while lifting a normal load of coils after five weeks of service. Several broken wires and fraying of the fiber core were revealed by visual examination of a section of the wire rope adjacent to the fracture. Fatigue cracks originating from both sides of the wire were revealed by microscopic examination of a longitudinal section of a wire. The diam of the sheave on the bale (27 cm) was found to be slightly below that specified for the 11...

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