1. Dep. of Soil, Water, and Climate Univ. of Minnesota – Twin Cities St. Paul MN 55108 USA
2. National Synchrotron Light Source II Brookhaven National Laboratory Upton NY USA
3. Stanford Synchrotron Radiation Lightsource Menlo Park CA USA
4. Global Minerals Engineering Hibbing MN USA
5. Biology Dep. and Large Lakes Observatory Univ. of Minnesota Duluth MN USA