| 摘要 |
<p>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 roofs although mixing and tightening can occur in the same direction. A method for placing a mine roof bolt in a mine roof.</p> |
