 | | Report (volume) |
| DIRECTOR BuiiIiETIN 574 MINING DISTRICTS OF THE DILLON QUADRANGLE, MONTANA AND ADJACENT AREAS BY ALEXANDER................................................. Mining districts...................................................................................... Mining development. ...................... .. - - ' -..................................... 18 Placer mining....... ~................................................................ 20 Present status of mining .....:........................................ |
 | | Report (issue) |
| INTERIOR GEOLOGICAL SURVEY MINERAL RESOURCES OF ELKO COUNTY, NEVADA By Roscoe M. Smith Prepared in cooperation...Acknowledgment -Mining districts Commodities Production Descriptions of mining districts . Alder district-Aura district...district -Beaver district Black Mountain district Bootstrap district Burner district Burns Basin district--...-Carlin district Cave Creek district ----Charleston district_--Coal Mine district~ Contact district Cornucopia...Cornucopia district - -Corral Creek district - Decoy district Delano district Delker districtDivide district |
 | | Report (issue) |
| Y A N D O R E DEPOSITS OF THE ALMA DISTRICT PARK COUNTY, COLORADO BY HORACE B. PATTON ARTHUR J...of the District 15 Description of the Maps 17 Degree of Accuracy 19 Description of Mining Claim M a p...I C D E S C R I P T I O N AREAS South Mosquito Gulch General Description ' Archean Weber Grits and Porphyries...Features s Other Quarternary Deposits North Mosquito Gulch Archean Igneous Rocks Glacial Features Other Quarternary... 7 CHAPTER IV—Continued. page Lower Mosquito Gulch, Pennsylvania and Loveland Mountains.. 114 General |
