1. Department of Geology University of Vermont
2. Geology Department Oberlin College
3. Gund Institute for the Environment University of Vermont
4. Rubenstein School of the Environment and Natural Resources University of Vermont
5. Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory Livermore CA USA
6. Department of Physics and Astronomy/PRIME Lab Purdue University
7. Department of Earth, Atmospheric and Planetary Sciences Purdue University