00949cam a22002771 4500 gs 57000214 DLC 20260227111405.0 790329s1957 mtuab b 000 0 eng c gs 57000214 (OCoLC)4798371 U. S. Geol. Survey. Libr. CoFS OCoLC DLC premarc TN490.T55 J3 553.49 Jarrard, Leonard D. Some occurrences of uranium and thorium in Montana. With sections on prospecting for radioactive minerals. [Butte] 1957. iv, 90 p. illus., maps (1 fold.) 19 cm. Montana. Bureau of Mines and Geology. Miscellaneous contribution no. 15 Bibliography: p. 90. Uranium ores Montana. Thorium. Radioactive substances. Montana Bureau of Mines and Geology. Miscellaneous contributions ; no. 15. 29169 29169