Code,Description F,Flint artefacts Q,Quartzite artefacts Ct,Chert artefacts F/Q,Flint and Quartzite artefacts (material type not separated) F/I,Flint and Ironstone artefacts (material type not separated) I,Ironstone artefacts O,"Organic artefacts (eg bone needle, art engravings)" B,Animal Bone HB,Human Bone C,Coprolite Br,Breccia sample Trav,Travertine sample Och,Ochre Ch,Charcoal Sample A,Amber fragment ES,Egg Shell Sed,Sediment Sample S,Snail samples St,Stones P,Pottery M,Metalwork G,Glass H,Heamatite Cl,Clinker Doc,Documentary Archive X,Non-quantified presence