?


William
Fyfe

Western University


Eric John
Essene

University of Michigan (GeograTree)


John W.
Valley

UW Madison (Geotree)




Mark G.
Inghram

Chicago (Physics Tree)


Gerald J.
Wasserburg

Caltech (Physics Tree)


Donald J.
DePaolo

UC Berkeley


Ethan F.
Baxter

Boston University
?


Clive R.
Neal

Notre Dame


William S.
Kinman

Notre Dame

Anthony D.
Pollington

UW Madison
(Options)

Anthony PollingtonX