| 摘要 |
<p>A system for reducing ambient dust during drilling in a mine tunnel comprising securing a wire mesh upon the tunnel wall at the work area and temporarily suspending an attachment plate upon the wire mesh by hooks and a depending springy cable. A horizontally extending, rotatable arm having a rotatable clamp on its end is connected to the plate. The clamp holds the end of a water spray hose which may be manually directed to spray water on debris at the work area to reduce dust from the debris. The attachment may be moved from place to place along the tunnel wall and the waters spray redirected accordingly.</p> |
