The present invention discloses a rock bolt (1) and a method of using a rock bolt to support services within a mine. The rock bolt has a hollow tubular shaft (2) which is closed at its leading end (3) but open at its trailing end where a hollow drive nut (6) is secured. A treaded shank (10) of a support member (11) is able to engage the nut. Services (25) such as air supply ducts, electric cables etc can be supported from the roof or wall of a mine by the support members (11).
