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Black River Falls

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

Geologic information

Identification information

Deposit ID 10302519
MRDS ID W017463
MAS/MILS ID 0550530001
Record type Site
Current site name Black River Falls
Alternate or previous names Jackson County Iron Mine, Seven Mile Mound Mine, Black River Falls Mine, Iron Mound
Related records 10072338

Comments on the site names

  • OTHER NAMES: JACKSON CO. IRON MINE, SEVEN MILE MOUND MINE.

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -90.72513, 44.2931 (WGS84)
Elevation 293
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Jackson(county)

Wisconsin(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Hatfield SW(quadrangle 1:24,000 scale)

Black River Falls(quadrangle 1:100,000 scale)

Eau Claire(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Black(hydrologic unit)

Upper Mississippi-Black-Root(hydrologic accounting unit)

Upper Mississippi-Black-Root(hydrologic subregion)

Upper Mississippi(hydrologic region)

Geographic areas

Country State County
United States Wisconsin Jackson

Commodities

Commodity Importance
Iron Primary
Water, Free Tertiary

Materials information

Materials Type of material
Hematite Unknown
Magnetite Unknown
Quartz Unknown

Nearby scientific data

Ore Body (1) -90.72513, 44.2931
ListMap

Economic information

Ore body information

  • Strike N45W
    Dip 70W
    Thickness 107M
    Length 1110M
    Area 526HA
    Depth to top 0M
    Field Value
    Type of Orebody #1 SEDIMENTARY
    Shape of Orebody #1 TABULAR
    Primary mode of Origin SEDIMENTATION
    Secondary mode of Origin METAMORPHISM
    Primary Ore Control LITHOLOGY
    Secondary Ore Control BEDDING
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 OTHER
    Strike And Dip N45W:70W
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 526
    Date of Last Modification 820114

Comments on the geologic information

  • ORE IS MAGNETITE TACONITE.

Economic information about the deposit and operations

Operation type Surface
Development status Past Producer
Commodity type Both
Deposit size Large
Significant Yes
Discovery year 1839
Year of first production 1969

Mining district

District name Lake Superior

Mineral rights holdings

Type of mineral rights Fee Ownership

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Jackson County Government
    ID 4700586
    Interest 100
    Home office Wisconsin
    Year 1993
    First year 1993

Comments on the ownership information

  • OWNER/OP: JACKSON CO. GOVERNMENT - JACKSON CO STEEL CO DONATED LAND AFTER MINE WAS RECLAIMED AND MILL AND PELLET PLANT WAS DISMANTLED.

Production statistics

  • Year 1969
    Description Iron Ore Pellets 36744 Metric Tons Of Pellets
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 36744mt
  • Year 1970
    Description Iron Ore Pellets 818920 Metric Tons Of Pellets
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 818920mt
  • Year 1971
    Description Iron Ore Pellets 845331 Metric Tons Of Pellets
  • Year 1972
    Description Iron Ore Pellets 901838 Metric Tons Of Pellets
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 901838mt
  • Year 1973
    Description Iron Ore Pellets 970792 Metric Tons Of Pellets
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 970792mt
  • Year 1974
    Description Iron Ore Pellets 913715 Metric Tons Of Pellets
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 913715mt
  • Year 1975
    Description Iron Ore Pellets 796126 Metric Tons Of Pellets
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 796126mt
  • Year 1976
    Description Iron Ore Pellets 678411 Metric Tons Of Pellets
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 678411mt
  • Year 1977
    Description Iron Ore Pellets 700648 Metric Tons Of Pellets
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 700648mt
  • Year 1978
    Description Iron Ore Pellets 670406 Metric Tons Of Pellets
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 670406mt
  • Year 1979
    Description Iron Ore Pellets 709460 Metric Tons Of Pellets
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 709460mt
  • Year 1980
    Description Iron Ore Pellets 710617 Metric Tons Of Pellets
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 710617mt
  • Year 1981
    Description Iron Ore Pellets 732500 Metric Tons Of Pellets
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 732500mt
  • Year 1982
    Description Iron Ore Pellets (Mine Closed Apr 1982) 245304 Metric Tons Of Pellets
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 245304mt

Comments on the production information

  • PRECISE PROCESS RECOVERY IS 72.65 PERCENT.

Reserves and resources

  • Type In-situ
    Estimate year 1983
    Measured 10392000mt ore
    Demonstrated 10392000mt ore
    Total resources 10392000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 30 wt-pct Iron Major 1983

Workings at the site

  • Type of workings Surface
    Area 56.5HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method BENCH (BERM)
    Swell Factor .68
    Percent Waste Rock 58.8
    Avg. Overburden Thickness 0
    Hardness of Ore HARD ROCKS
    Avg. Bench Height (meters) 11
    Max. Pit Slope (degrees) 45
    Capacity 6197
    Capacity Units MT ORE/DAY
    Unit Production Cost 3.77
    Units of Production $/MT ORE
    Operating Days per Year 365
    Operating Shifts per Day 3
    Year of Information 1980
  • Type of workings Surface
    Area 56.5HA
    Field Value
    MAS Development Schedule # 2
    Mining Record # 2
    Status of Mining Method PROPOSED
    Mining Method BENCH (BERM)
    Swell Factor .68
    Percent Waste Rock 58.8
    Avg. Overburden Thickness 0
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 11
    Max. Pit Slope (degrees) 45
    Capacity 1933
    Capacity Units MT ORE/DAY
    Unit Production Cost 5.09
    Units of Production $/MT ORE
    Operating Days per Year 365
    Operating Shifts per Day 1
    Year of Information 1982

Comments on the workings information

  • TOTAL LAND HOLDING IS 5261 HECTARES.

Reference information

Bibliographic references

  • Geology

    HOLT, C. L. R., JR., K. B. YOUNG, AND W. H. CARTWRIGHT.

  • Geology

    THE WATER RESOURCES OF WISCONSIN. CH. IN WISCONSIN

  • Geology

    BLUE BOOK, 1964. COMPILED BY WISCONSIN LEGISLATIVE

  • Geology

    REFERENCE BUREAU, MADISON, MAP 20, P. 189.

  • Reserve-Resource

    EVANS, T. ACTIVE MINE PERMIT HEARING TAPES. UNIV. OF

  • Reserve-Resource

    WISCONSIN, GEOL. AND NAT. HIST. SURVEY, JAN. 6,7, 1981.

  • Reserve-Resource

    FRIZ, T. O. MINERAL RESOURCES, MINING AND LAND USE PLANNING

  • Reserve-Resource

    IN WISCONSIN. UNIV. OF WISCONSIN, GEOL. AND NAT. HIST.

  • Reserve-Resource

    SURVEY, IC 26, 1975, P. 16.

  • Reserve-Resource

    GUIDEBOOK TO THE GEOLOGY AND MINERAL DEPOSITS OF THE

  • Reserve-Resource

    CENTRAL PART OF JACKSON COUNTY AND PART OF CLARK

  • Reserve-Resource

    COUNTY, WISCONSIN. UNIV. OF WISCONSIN, GEOL. AND

  • Reserve-Resource

    NAT. HIST. SURVEY, MADISON, 1973, 27 PP.

  • Reserve-Resource

    1983 MINERALS YEARBOOK, VOL. 2, P. 603.

General comments

Subject category Comment text
Deposit INFORMATION BASED ON DATA SUPPLIED BY RALPH W. MARSDEN UNDER FEDERAL BUREAU OF MINES GRANT #G0155058. JACKSON COUNTY IRON COMPANY, A WHOLLY-OWNED SUBSIDIARY OF ISLAND STEEL COMPANY, DEEDED OVER THE LAND AND MINERAL RIGHTS TO THE JACKSON COUNTY GOVERNMENT, AFTER THE MINE HAD BEEN RECLAIMED AND THE MILL AND PELLET PLANT HAVE BEEN DISMANTLED. PROPERTY REVIEWED BY RC SMITH, 3-87. THE MINE SHUTDOWN IN APRIL 1982 AND NEVER REOPENED. MINE RECLAMATION CONTINUED DURING 1983. FINAL PIT DEPTH ESTIMATED TO BE 183 METERS. TOTAL EXTENT OF ORE DOWN DIP IS UNKNOWN.

Reporter information

Type Date Name Affiliation Comment
Reporter 23-FEB-1995 Efc 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 09/19/1983
MSHA mine ID4700586
Mine name (MSHA)Black River Falls Mine And Mill
Current operatorJackson County Iron Company
Current controller (parent)Inland Steel Industries Inc
Mine typeSurface (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.

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