Abstract: 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.

Abstract: The invention relates to a ground-engaging tool which is connected or connectable to a lip on an excavation bucket. The ground-engaging tool includes a tool body which is formed from a material having a hardness of approximately 40 Rockwell C hardness and which defines a contact surface at one end for receiving impacts in use. Extending through a substantial portion of the tool body from the contact surface is a hardened core formed from a material having a hardness which is at least 20% greater than the hardness of the material of the tool body for transferring impacts through the tool body.