In North America, archaeological recovery has indicated that bitumen was sometimes used to adhere stone projectile points to wooden shafts.
ɪn nˈɔːɹθ ɐmˈɛɹɪkə, ˌɑːɹkiːəlˈɑːdʒɪkəl ɹᵻkˈʌvɚɹi hɐz ˈɪndᵻkˌeɪɾᵻd ðæt bɪtˈuːmɛn wʌz sˈʌmtaɪmz jˈuːzd tʊ ɐdhˈɪɹ stˈoʊn pɹədʒˈɛktəl pˈɔɪnts tə wˈʊdən ʃˈæfts.