The dominant raw material of the chipped stone industry is obsidian in all the phases. Although no source analysis has been carried out, the black and greeinsh-black colors indicate Bingöl. Both blade and flake industry are seen but the blade industry is smaller than the flake industry. A few long blades were probably brought in pre-processed. Artifacts increase in the 2nd and 3rd Phases. There are a few "Cayönü tools", becoming more abundant in the lower Ievels. The small number of arrowheads indicates that hunting was not popular, orthat other methods were used. 
Flint as a raw material is from local sources and is less frequent than obsidian. Direct percussion techniques have been used in flint knapping. Smooth blades are very few, and only one broken bullet core has been uncovered. There is a silica sheen on some of the flint blades. A few fine brown and grey flints were brought from abroad. According to preliminary sorting the ratio of flint to obsidian is approximately 15% to 85%. Technologically, although there is an apparent difference between the phases, it is not yet possible to reach definite conclusions or make comments, as research is still continuing. 