An extensive lithic refitting was done with a collection of 190 associate lithic artifacts found on the surface near the infant cemetery of site E-09-4. Because all of the flakes and tools produced in this knapping were found together with the core, archaeologists hypothesize that the tools were made for practice or training, not to be used. The tool styles and knapping processes evident in these refits are associated with Late Neolithic technology, designated by extensive flake production and retouched flake tools.[14]