01002cam a22002531 4500 gs 60000288 DLC 20260227111409.0 790227s1960 mtua 000 0 eng c gs 60000288 (OCoLC)4695373 U.S. Geol. Survey. TxEU DLC premarc TN24.M9 R62 Roby, Robert N. Mines and mineral deposits (except fuels) Jefferson County, Montana, by R. N. Roby [and others] Butte, Montana School of Mines, 1960. vi, 122 p. maps (1 fold. in pocket) diagrs., tables, 28 cm. Montana. Bureau of Mines and Geology. Bulletin 16 Prepared by the Bureau of Mines, U.S. Dept. of the Interior and the Montana Bureau of Mines and Geology. Mines and mineral resources Montana Jefferson County. Ore deposits Montana Jefferson County. Montana Bureau of Mines and Geology. Bulletin ; 16. 29486 29486