| 摘要 |
A mine roof bolt for use with resin including a strand cable. The bolt includes a head mechanism attached to the strand cable which preferably allows the strand cable to be turned in a first direction for mixing the resin and in a second direction opposite the first direction for tensioning the strand cable in the mine roof; although mixing and tightening can occur in the same direction. A method for placing a mine roof bolt in a mine roof.
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