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(11) | EP 0 130 770 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Collapsible elongate mine support |
(57) A mine support comprises a length of timber pole (1) with wood removed to form longitudinally
extending and tapering planar strips (2) spaced circumferentially around it. The adjacent
edges of the planar surfaces do not need to undercut the pole circumference, and a
reinforcing sleeve (6) is fitted over the pole against the pole surface around and
between the planar surfaces. |