 | | Report (issue) | | and Tertiary Age of the Northern Black Hills, South Dakota by Lewis H. Shapiro I APR 2 3 1970 DENVER...Geological Engineering South Dakota School of Mines and Technology Rapid City, South Dakota Submitted in accordance...AND IN ALL EARLIER LITERATURE ON THE RUBY BASIN DISTRICT. COLOR KEY FOR ALL MAPS IN THIS REPORT Rock....... 45 Mining Districts ....................... 49 4.1 Bald Mountain Mining District ............Bald Mountain District ....... 49 4.13. Geology of the Bald Mountain Mining District ... 51 ... |  | | Report (volume) | | National Forest, South Dakota and Wyoming U.S. GEOLOGICAL SURVEY BULLETIN 1580 SOUTH DAKOTA WYOMING I -«*&...Geology of the Black Hills National Forest, South Dakota and Wyoming We st from. Washington SHOWING...Geology of the Black Hills National Forest, South Dakota and Wyoming By ED DEWITT, J. A. REDDEN, ANNA...Mineral resources locatable commodities 50 History of mining and exploration 50 Metals 51 Industrial minerals...potential of the Black Hills National Forest, South Dakota and Wyoming, was made to assist the U.S. Forest |  | | Report (issue) | | Burchett Q. Kansas, by William J. Ebanks, Jr., Lawrence L. Brady, Philip H. Heckel, Howard G. O'Connor...Kier, L. F. Brown, Jr., and E. F. McBride T. South Dakota, by Robert A. Schoon U. Wyoming, by David R..._______ Q. Kansas, by William J. Ebanks, Jr., Lawrence L. Brady, Philip H. Heckel, Howard G. O'Connor...and E. F. McBride__________________________ T. South Dakota, by Robert A. Schoon_______________________...north-central Iowa. Exposures are less numerous in south-central Iowa and are extremely limited in the westcentral |  | | Report (volume) | | White River National Forest and the Dillon Ranger District of the Arapaho National Forest, Colorado U.S...White River National Forest and the Dillon Ranger District of the Arapaho National Forest, Colorado By MARGO...White River National Forest and the Dillon Ranger District of the Arapaho National Forest, Colorado / by...White River National Forest and Dillon Ranger District of the Arapaho National Forest ("the Forest")...areas of base and precious metals in North America. Mining and mineral exploration have played a central role |  | | Report (volume) | | Placer mining in Alaska in 1903, by Alfred H. Brooks......._....'.. The Porcupine placer mining district...'Wright........ Gold placers of the Fairbanks district, by L. M. Prindle ............ The Kotzebue placer......... Notes on the geology of the Goldfields district, by J. E. Spurr^...... Oklahoma: Reported gold...of the Wichita Mountains, by PI. Foster Bain. South Dakota: Ore deposits of the northern Black Plills,..... Utah: Progress report on the Park City mining district, by J. M. Boutwell. Geological Survey publications |
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Iron Hill Mine, Spearfish, Lawrence County, South Dakota, USA