| Deposit ID | 10258886 |
|---|---|
| MAS/MILS ID | 0040230353 |
| Record type | Site |
| Current site name | Three R Mill |
| Alternate or previous names | Three R Bluebird Mill, Semco Mill |
| Point of reference | Plant |
|---|---|
| Geographic coordinates: | -110.76458, 31.47434 (WGS84) |
| Elevation | 1692 |
| Location accuracy | 10(meters) |
Political divisions (FIPS codes)
Santa Cruz(county)
Arizona(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Cumero Canyon(quadrangle 1:24,000 scale)
Nogales(quadrangle 1:100,000 scale)
Nogales(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Santa Cruz(hydrologic unit)
Santa Cruz(hydrologic accounting unit)
Middle Gila(hydrologic subregion)
Lower Colorado(hydrologic region)
Federal lands
Coronado National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Arizona | Santa Cruz |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Gila and Salt River | 022 S | 016 E | 36 | NWSE | Arizona |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Plant (1) | -110.76458, 31.47434 |
|---|
| Operation type | Processing Plant |
|---|---|
| Development status | Plant |
| Commodity type | Metallic |
| Significant | No |
| Plant type | Beneficiation (Mill) |
| Plant subcategory | Flotation |
| Milling method | Flotation |
| District name | Palmetto District |
|---|
| Type of mineral rights | Patented |
|---|
| Ownership category | National Forest |
|---|
| Type | Unknown |
|---|---|
| Owner | Green, Harold |
| Home office | Arizona |
| Year | 1978 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0040230353 |
ADMR SEMCO CORP FILE
SCHRADER F C 1915 USGS BULL 582 P.282
USBM CORONADO NATIONAL FOREST STUDY
| Subject category | Comment text |
|---|---|
| Deposit | TAILINGS FROM THE THREE R MILLL WERE SAMPLED FOR TOXIC METALS. COPPER IS THE ONLY TOXIC METAL PRESENT. ABOUT 250,000 TONS OF TAILINGS CONTAIN OVER 1% COPPER AND THE TAILINGS COULD BE PROCESSED AND CLEANED UP AT THE SAME TIME. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 08-JUL-93 | ADMR | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.