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Red Ledge Mine

Past Producer in Nevada county in California, United States with commodities Chromium, Iron
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10163996
MRDS ID M011733
MAS/MILS ID 0060570726
Record type Site
Current site name Red Ledge Mine
Alternate or previous names Laims, Red Ledge & Red Ledge Extension C
Related records 10031922

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -120.80103, 39.34429 (WGS84)
Elevation 1079
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Nevada(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Washington(quadrangle 1:24,000 scale)

Truckee(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Yuba(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

Tahoe National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States California Nevada

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 017 N 010 E 13 NWNWNE California

Commodities

Commodity Importance
Chromium Critical Tertiary
Iron Tertiary

Materials information

Materials Type of material
Chlorite Unknown
Chromite Unknown
Serpentine Unknown
Talc Unknown
Uvarovite Unknown

Nearby scientific data

Ore Body (1) -120.80103, 39.34429
ListMap

Economic information

Ore body information

  • Strike N30W
    Dip 55W
    Thickness 6M
    Length 60M
    Width 6M
    Area 1HA
    Depth to top 0M
    Field Value
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 TABULAR
    Shape of Orebody #2 LENTICULAR
    Shape of Orebody #3 IRREGULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control LITHOLOGY
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONITIZATION
    Strike And Dip N30W:55W
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 1
    Date of Last Modification 820510

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1916
Year of first production 1916

Mining district

District name Washington

Mineral rights holdings

Type of mineral rights Other

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner U.S. Forest Service - Tahoe National Forest
    Interest 100
    Home office California
    Year 1976
  • Type Operator
    Owner Last Operator 1919,Tb,Rf And Jm Williamson And Cm Cole
    Home office California
    Year 1976

Workings at the site

  • Type of workings Surface
    Area 1HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Mining Method OPEN PIT
    Swell Factor .6
    Avg. Overburden Thickness 0
    Hardness of Ore M-HARD ROCKS
  • Type of workings Underground
    Length 100M
    Overall depth 10M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Mining Method OPEN STOPE
    Swell Factor .6
    Hardness of Rock SOFT NONPLASTIC FISSURED MODERATE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. UNSUPPORTING NO FLOW
    Mine Support Chars. TIMBER W/LAGGING CONCRETE-UNREINFOR
    Number of Shafts 1
    Avg. Length of Adits (m) 45
    Number of Adits 2
    1st Condition of Workings CAVED AT PORTAL

Reference information

Bibliographic references

  • Deposit

    RYNEARSON,GA 1953 CAL DIV MINES BULL 134,PT 3,CH 5,NEV CO.PP

  • Deposit

    LOGAN,CA 1918 UNPUBL FIELD REPT NEVADA CO NO.203 RED LEDGE

  • Deposit

    BRADLEY,WW ET AL,1918 CAL ST MINING BUREAU BULL 76 P 158

General comments

Subject category Comment text
Deposit 1265 LONG TONS OF ORE AVERAGING 42% CR2O3 WAS SHIPPED. CHROM S 48% CR2O3. MINE VISIT 26 SEPT 1975 BY CDMG NO ORE SEEN IN O RESERVE ESTIMATE POSSIBLE. THE AVERAGE MINEABLE GRADE OF C IS 42 PERCENT AND IRON IS 10 PERCENT. INSUFFICIENT DATA FOR CALCULATIONS. ANALYSIS BY CDMG IN 1976 GAVE FOLLOWING PERCENTAGES-MASSIVE 2 05.40, CR2O3 48.42, FEO 10.38, TOTAL FE 16.08, AL203 17.36, MGO CR/FE 2.65.

Reporter information

Type Date Name Affiliation Comment
Reporter 05-NOV-1984 Unknown U.S. Bureau of Mines

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Current status (per MSHA)

StatusAbandoned since 05/22/2026
MSHA mine ID0404393
Mine name (MSHA)Red Ledge Mining Co.
Current operatorRed Ledge Mining Company
Current controller (parent)Barry Yampol; David Yampol
Mine typeUnderground (Metal / non-metal)

Inferred by coordinate + name similarity (1500 m, 1.00 match). Confirm against MSHA if precision matters — non-USGS-curated cross-references may occasionally point at a neighbouring mine.

Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.

External references

Maps centered on this site

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.