Directory, Montana metal and coal mines Montana Bureau of Mines and Geology creator text dictionary mtu Butte State School of Mines 1919 monographic eng
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30 p. 24 cm. At head of title: The Montana State Bureau of Mines and Metallurgy. "Supplementary to a report on the various mining districts of Montana which is now being prepared by the Geological Department of the State Bureau of Mines and Metallurgy." Mineral industries Montana Directories Coal mines and mining Montana Directories TN24.M9 A4 1919a Bulletin (Montana Bureau of Mines and Geology) ; no. 2 gs 20000221 U.S. Geol. Survey. Libr. 861112 20260227111324.0 gs 20000221