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Maine Geological Survey, Open-File Report 91-7. History of mining in Maine from early 1800's to the present
Maine Geological Survey
Mineral Resources and Mining Reports
Lepage, Carolyn A., Foley, Michael E., and Thompson, Woodrow B., 1991, Mining in Maine: past, present, and future: Maine Geological Survey, Open-File Report 91-7, 9 p.. Maine Geological Survey Publications. 206. http://digitalmaine.com/mgs_publications/206
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