hiː fˈaʊnd ðæt ɪn ɐn ɐsˈɛmblɪdʒ wˌɛɹ ðɛɹ ɪz ɐ mˈɪkstʃɚɹ ʌv dˈɛbɪɾɪdʒ fɹʌm ɐ pˈætɚnd tˈuːl ænd kˈoːɹ ɹᵻdˈʌkʃən, ɪɾ ɪz lˈaɪkli təbi klˈæsᵻfˌaɪd æz ɐ pˈætɚnd tˈuːl ɐsˈɛmblɪdʒ, ɪf ðə kˈoːɹ dˈɛbɪɾɪdʒ ɹˌɛpɹᵻzˈɛnts fˈɪfti pɚsˈɛnt ɔːɹ lˈɛs ʌvðə tˈoʊɾəl ɐsˈɛmblɪdʒ.
He found that in an assemblage where there is a mixture of debitage from a patterned tool and core reduction, it is likely to be classified as a patterned tool assemblage, if the core debitage represents 50% or less of the total assemblage.