The invention relates to a lip for an excavation bucket. The lip includes a lower plate defining a plurality of integral projections along a front edge thereof, an upper plate and a central plate sandwiched between the lower plate and the upper plate so as to form a laminated structure. The upper plate also defines a plurality of integral projections which together with the projections on the lower plate form tool attachment formations in a serrated front edge of the laminated structure for supporting ground-engaging tools on the lip.

The invention relates to a hoist arrangement (10) for a dragline rigging. The hoist arrangement includes a triangular framework comprising a hollow fibreglass spreader bar (14) and two fibreglass ties (12) which are attachable to the spreader bar. The fibreglass ties (12) are connectable to a pick-up link on a dragline rigging, and a pair of lower hoist members in the form of wire-reinforced, synthetic rubber belts (16) depend from the spreader bar (14) and include attachment formations (42) at lower ends thereof for attaching the hoist arrangement (10) to trunnions on a dragline bucket.