<p>A rock bolt (100) has an elongate load bearing element (101) longitudinally extending between an element leading end (102) and element trailing end (103). A wire (110) helically extends about a leading end portion (109) of the load bearing elements (101) from a wire leading end (111) located adjacent the element leading end (102) to a wire trailing end (112). The wire (110) comprises a first wire portion (114) located toward the wire leading end (111) and a second wire portion (115) located toward the wire trailing end (112). The first wire portion (114) has a greater helical pitch than the second wire portion (115). AlliI 0o 6 c, Fig. 2 Fig. 1</p>
