1. Iron Mining Association of Minnesota. Minnesota iron mining. Available from: http://www.taconite.org/mining-industry. Accessed January 21, 2015.
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3. Comprehensive Assessment of Exposures to Elongate Mineral Particles in the Taconite Mining Industry;Hwang;Ann Occup Hyg,2013
4. Department of Health and Human Services, National Institute for Occupational Safety and Health. Asbestos fibers and other elongate mineral particles: state of the science and roadmap for research, 2011: Publication No. 2011–159.
5. Cancer incidence rates in northeastern Minnesota,1999