| 摘要 |
<p>A system for use in resiting unauthorized removal of a hollow pole (7) from a mounting (14) which comprises a tubular body portion which is adapted to be firmly installed in a supporting stratum and has an open end adapted to receive a pole to be mounted, means (3-5) resisting withdrawal of the pole from the tubular body portion, and securing means comprising an elongate, flexible, substantially inextensible member (8) having a first end portion captured in the tubular body portion (9) and a second end portion secured to the pole at a position remote from the tubular body portion by fastening means (12) operable from within an enclosure which is inaccessible to unauthorised persons but accessible by authorised persons whereby authorised persons may release the securing means thus to permit the pole to be withdrawn from the tubular body portion.</p> |
