Use wear analysis Method Tell el Iswid is located in the northeastern Delta and it was occupied from the early fourth millennium BC-the Lower Egyptian Culture period (LEC)-until the early third millennium BC (Naqada IIIC). These last years, the excavation was mainly focused on the Buto IIa-Buto IIIa period. These phases are characterized by a lightweight architecture and hollow structures (trenches, posts and storage pits), until Buto IIb, then a mud brick architecture appears which seems to mark a turning point in the settlement patterns. The exact nature of this occupation (collective or individual dwellings, specialised activity areas) is still unknown to us, but the study of the artefacts that will be carried out in the coming years may help us to define it. This poster aims at presenting the methodology adopted to analyse the bone implements. This research has shed light on the ways in which objects were shaped and on their probable function. The conservation of bone material is relatively poor at Tell el-Iswid and in the northern Delta. Several post-depositional processes and the salinisation of soils lead to the degradation of the bone surface that makes it difficult to identify the bone industry. However, in the sandier levels at the base of the LEC sequence, a better preservation allows to highlight the presence of this type of industry in the settlement.