1. School of Natural Resources & Environment, University of Michigan, 440 Church St., Ann Arbor, Michigan 48109, United States
2. Department of Earth & Environmental Sciences, Wright State University, 3640 Colonel Glenn Hwy., Dayton, Ohio 45435, United States
3. Nickel Producers Environmental Research Association (NiPERA), 2605 Meridian Parkway, Suite 121, Durham, North Carolina 27713, United States