| Deposit ID | 10214788 |
|---|---|
| MRDS ID | W026089 |
| MAS/MILS ID | 0061150178 |
| Record type | Site |
| Current site name | Yuba Placer Dredge 21 |
| Alternate or previous names | Cal Sierra Development, Yuba Gold Fields, Dredge #21. |
| Related records | 10111249, 10165799 |
| Point of reference | Ore Body |
|---|---|
| Geographic coordinates: | -121.45795, 39.18488 (WGS84) |
| Location accuracy | 100(meters) |
Political divisions (FIPS codes)
Yuba(county)
California(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Browns Valley(quadrangle 1:24,000 scale)
Yuba City(quadrangle 1:100,000 scale)
Chico(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Lower Sacramento(hydrologic accounting unit)
Sacramento(hydrologic subregion)
California(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | California | Yuba |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 016 N | 005 E | 31 | California |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Ore Body (1) | -121.45795, 39.18488 |
|---|
| Operation type | Placer |
|---|---|
| Development status | Plant |
| Commodity type | Metallic |
| Significant | Yes |
| Mining method | Dredging |
| Plant type | Beneficiation (Mill) |
| Plant subcategory | Hydromet |
| Milling method | Washing |
| District name | Yuba River District |
|---|
| Type of mineral rights | Located Claim |
|---|---|
| Type of mineral rights | Patented |
| Ownership category | Private |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Yuba Placer Gold Co. |
| ID | 0404361 |
| Interest | 100 |
| Home office | California |
| Year | 1989 |
| Type | Owner |
|---|---|
| Owner | Cal Sierra Development Inc (Owner Of Yuba Placer Au Co.) |
| Interest | 100 |
| Home office | California |
| Year | 1997 |
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1997 | ||||||||||||||
| Demonstrated | 86182550mt ore | ||||||||||||||
| Total resources | 86182550mt ore | ||||||||||||||
| |||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0061150178 | |
| Mine Safety and Health Administration | MSHA | MSHA | 0404361 |
RANDOL MINING DIRECTORY, 1996/97, P152.
AMERICAN MINES HANDBOOKS, 1996, 1997.
CALIF. DIV. MINES AND GEOL. SPEICAL PUBL. 103, 1990.
MSHA.DBF LISTING OF 03/95.
AMERICAN MINES HANDBOOK, 1993, P193, "YUBA WESTGOLD INC."
AMERICAN MINES HANDBOOK, 1996, P54, "CAL SIERRA DEVEL. INC."
RANDOL MINING DIRECTORY, 1996/97, P152, "CAL SERRIA DEVELOP-
MENT".
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 29-JUL-97 | Buckingham, David A. | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
| Status | Abandoned since 12/11/1989 |
|---|---|
| MSHA mine ID | 0404361 |
| Mine name (MSHA) | Retort & Gold Circuit |
| Current operator | Yuba Natural Resources Inc |
| Mine type | Facility (Metal / non-metal) |
MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.
Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.