Manufacture of cable bolts

摘要

A cable bolt comprising a plurality of flexible steel filaments (12a) formed around a central member (12b), the cable bolt having spaced bulbous portions (18) along the length of the bolt each bulbous portion (18) defining a cavity containing a segmented ring (40) that surrounds the central member (12b) to engage the filaments (12a) of the bulbous portion.