| 摘要 |
<p>A bolter (10) intended to receive a drill bit for the purposes of drilling a hole in a surrounding rock structure. The bolter (10) includes a telescopic leg (12) extending from a base (11). The base (11) is provided with a face (30) that is to receive a duct member (31). The duct member (31) provides for the delivery of a drive fluid (such as air) to the motor (29).</p> |
