| 摘要 |
A twin cable mine roof bolt includes a barrel having a first end, a generally dome-shaped second end, and an outer surface, a pair of angled and narrowing bores extending through the barrel, with each bore sized to receive a cable, a pair of wedges sized for placement in each of the bores to secure the cables, and a protrusion extending from the first end of the barrel and sized for insertion into a socket wrench.
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