Wikipedia radiocarbon dating uranium lead dating
Andrew Kulikovsky spoke on one occasion and John Hartnett spoke on 2 occasions. About half those who are on the committee are YECs and the others doubt the YEC position to various degrees.
Jim raised some interesting points but I don’t believe that he addressed the central points that Justin raised.
He has equipment at the University of Adelaide and does the dating analysis himself.
Thus he has the knowledge of an experienced practitioner and is not just an armchair theoretician.
Jim stated that “uranium is preferentially encased in these [zircon] crystals while lead is preferentially excluded” but did not fully explain the significance of this.