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LTV Mine

Producer in St. Louis county in Minnesota, United States with commodity Iron
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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 10292188
MAS/MILS ID 0271370020
Record type Site
Current site name LTV Mine
Alternate or previous names Hoyt Lakes, Erie Mine, Ltv Steel Mining Co.

Geographic coordinates

Point of reference Plant
Geographic coordinates: -92.14189, 47.6 (WGS84)
Elevation 535
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

St. Louis(county)

Minnesota(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Aurora(quadrangle 1:24,000 scale)

Vermilion Lake(quadrangle 1:100,000 scale)

Hibbing(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

St. Louis(hydrologic unit)

St. Louis(hydrologic accounting unit)

Western Lake Superior(hydrologic subregion)

Great Lakes(hydrologic region)

Geographic areas

Country State County
United States Minnesota St. Louis

Commodities

Commodity Importance
Iron Primary

Materials information

Materials Type of material
Actinolite Unknown
Andradite Unknown
Biotite Unknown
Calcite Unknown
Chert Unknown
Cummingtonite Unknown
Diopside Unknown
Fayalite Unknown
Graphite Unknown
Hedenbergite Unknown
Hematite Unknown
Hornblende Unknown
Hypersthene Unknown
Magnetite Unknown
Plagioclase Unknown
Pyrite Unknown
Pyrrhotite Unknown
Quartz Unknown
Riebeckite Unknown

Nearby scientific data

Plant (1) -92.14189, 47.6
ListMap

Economic information

Ore body information

  • Strike N75E
    Dip 10S
    Thickness 90M
    Length 17500M
    Width 3200M
    Depth to top 6.1M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 SEDIMENTARY
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 DISSEMINATED
    Type of Orebody #3 REPLACEMENT
    Primary mode of Origin RESIDUAL CONCENT
    Secondary mode of Origin SEDIMENTATION
    Primary Ore Control LITHOLOGY
    Secondary Ore Control BEDDING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N75E:10S
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 6.1
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 810921
  • Area 15540HA
    Field Value
    Total Surface Area (HA) 15540
    Date of Last Modification 910418

Comments on the geologic information

  • OREBODY DIMENSIONS ARE A ROUGH APPROXIMATION BASED ON THE EXTENT OF THE BIWABIK FORMATION ON THE LTV PROPERTIES.

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Metallic
Significant Yes
Year of first production 1957

Mining district

District name Mesabi District

Mineral rights holdings

Type of mineral rights State Lease
Type of mineral rights Fee Ownership

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Cleveland-Cliffs Iron Co.
    ID 2100824
    Interest 100
    Home office Ohio
    Year 1990

Production statistics

  • Year 1957
    Description Taconite Pellets Shipped 115498 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 115498mt
  • Year 1957
    Description 1948-1957 Preliminary Plant Pellet Prod. 3724700 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 3724700mt
  • Year 1958
    Description Taconite Pellets Shipped 2713200 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 2713200mt
  • Year 1959
    Description Taconite Pellets Shipped 3618500 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 3618500mt
  • Year 1960
    Description Taconite Pellets Shipped 5663500 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 5663500mt
  • Year 1961
    Description Taconite Pellets Shippped 7635800 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 7635800mt
  • Year 1962
    Description Taconite Pellets Shipped 7817300 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 7817300mt
  • Year 1963
    Description Taconite Pellets Shipped 8346600 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 8346600mt
  • Year 1964
    Description Taconite Pellets Shipped 7951899 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 7951899mt
  • Year 1965
    Description Taconite Pellets Shipped 8123199 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 8123199mt
  • Year 1966
    Description Taconite Pellets Shipped 8731500 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 8731500mt
  • Year 1967
    Description Taconite Pellets Shipped 9767399 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 9767399mt
  • Year 1968
    Description Taconite Pellets Shipped 10890000 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 1089000mt
  • Year 1969
    Description Taconite Pellets Shipped 10338000 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 1033800mt
  • Year 1970
    Description Taconite Pellets Shipped 10576000 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 1057600mt
  • Year 1971
    Description Taconite Pellets Shipped 9368000 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 9368000mt
  • Year 1972
    Description Taconite Pellets Shipped 10753000 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 1075300mt
  • Year 1973
    Description Taconite Pellets Shipped 13314000 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 1331400mt
  • Year 1974
    Description Taconite Pellets Shipped 10624000 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 1062400mt
  • Year 1975
    Description Taconite Pellets Shipped 10276000 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 1027600mt
  • Year 1976
    Description Taconite Pellets Shipped 10419000 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 1041900mt
  • Year 1977
    Description Taconite Pellets Shipped 3557000 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 3557000mt
  • Year 1978
    Description Taconite Pellets Shipped 8892399 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 8892399mt
  • Year 1979
    Description Taconite Pellets Shipped 9624100 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 9624100mt
  • Year 1980
    Description Taconite Pellets Shipped 6200100 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 6200100mt
  • Year 1981
    Description Taconite Pellets Shipped 7771645 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 7771645mt
  • Year 1982
    Description Taconite Pellets Shipped 3682701 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 3682701mt
  • Year 1983
    Description Taconite Pellets Shipped 3922912 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 3922912mt
  • Year 1984
    Description Taconite Pellets Shipped 3454562 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 3454562mt
  • Year 1985
    Description Taconite Pellets Shipped 5051514 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 5051514mt
  • Year 1986
    Description Taconite Pellets Shipped 5544052 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 5544052mt
  • Year 1987
    Description Taconite Pellets Shipped 7017126 Same
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 7017126mt
  • Year 1988
    Description Taconite Pellets Shipped 7263972 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 7263972mt
  • Year 1989
    Description Taconite Pellets Shipped 7381044 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 7381044mt
  • Year 1990
    Description Taconite Pellets Shipped 8738000 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 8738000mt
  • Year 1991
    Description Taconite Pellets Shipped 6965000 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 6965000mt
  • Year 1992
    Description Taconite Pellets Shipped 6884000 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 6884000mt
  • Year 1993
    Description Taconite Pellets Shipped 7791000 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 7791000mt
  • Year 1994
    Description Taconite Pellets Shipped 8129000 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 8129000mt

Reserves and resources

  • Type In-situ
    Estimate year 1994
    Measured 543510000mt ore
    Demonstrated 543510000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 64 wt-pct Iron Major 1994

Comments on the reserve resource information

  • M1C1=M9C4. RESERVE FIGURES WERE PROVIDED BY THE MINNESOTA DEPT. OF REVENUE 1989 OCCUPATION TAX REPORT. Q-MATRIX 2 REPRESENTS RESERVES ESTIMATED FOR THE 1993 ADIT UPDATE.
  • MESABI RANGE; IN RANGE BLOCK 14W (0271370033) AND 15W (027137003 OF MARSDEN STUDY. OTHER NAME: ERIE MINING CO. CHANGED IN 1986 TO HOYT LTV STEEL MINING CO. IS A SUBSIDIARY OF LTV CORP. OPERATOR: PICKANDS-MATHER, SUBSIDIARY OF CLEVELAND CLIFFS INC. LAST VISIT BY FIELD CENTER IN 1980 1994 RESERVE ESTIMATED BY TAKING THE LTV SEC FM 10-K 1994 REPT. RESERVES ON P. 20 STATED IN TERMS OF 534,950 GROSS TONS PELLETS CONTAINING 64% FE DIVIDED BY 87% EST RECOVERY AND 23% FE CONTENT IN ORE X 1.0160 MT/GROSS TONS

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Swell Factor .61
    Percent Waste Rock 43
    Avg. Overburden Thickness 6.1
    Primary Material Cover SAND, GRAVEL
    Secondary Material Cover M-HARD ROCKS
    Hardness of Ore HARD ROCKS
    Avg. Bench Height (meters) 12
    Max. Pit Slope (degrees) 45
    Capacity 67488
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 3.13
    Units of Production $/MT ORE
    Operating Days per Year 365
    Operating Shifts per Day 3
    Year of Information 1989

Comments on other economic factors

  • THERE ARE A TOTAL OF 13 PITS OR MINING AREAS AT LTV WITH 7 OF THE AREAS CURRENTLY ACTIVE.

Reference information

Bibliographic references

  • Production

    SANDSTROM, D.A. THE ANNUAL REPORT OF THE INSPECTOR OF

  • Production

    MINES. ST. LOUIS COUNTY, MINNESOTA, 1981-1989 EDITIONS.

  • Geology

    GUNDERSEN, J.N., AND G.M. SCHWARTZ. THE GEOLOGY OF THE

  • Geology

    METAMORPHOSED BIWABIK IRON FORMATION, EASTERN MESABI

  • Geology

    DISTRICT, MINNESOTA. MINN. GEOLOGICAL SURVEY BULL. 43, 1962,

  • Geology

    139 P.

  • Reserve-Resource

    LTV CORP SEC FM 10-K REPT, 12/31/93, P. 20.

  • Workings

    SKILLINGS MINING REVIEW. NORTH AMERICAN IRON ORE PRODUCTION

  • Workings

    IN 1990 EXPECTED TO DECLINE ONLY SLIGHTLY FROM 10-YEAR

  • Workings

    PEAK REACHED IN 1989. JULY 28, 1990, PP. 19-20.

  • Deposit

    SAWYER, M. (BUMINES-IFOC). ERIE MINE PROPERTY EVALUATION

  • Deposit

    FILE REPORT (PROPRIETARY DATA). BUMINES, SEPT. 1981.

  • Deposit

    HOFFMAN, C. (DIRECTOR OF ENVIRONMENTAL AFFAIRS, CLEVELAND-

  • Deposit

    CLIFFS MINING CO.). COMPANY INFORMATION PROVIDED DEC. 1990

  • Deposit

    STERK, M.R. (TECHNICAL ASSISTANT-MINING, LTV STEEL MINING

  • Deposit

    CO.). LTV MINE RESTRUCTURING FOR INCREASED PRODUCTION.

  • Deposit

    SKILLINGS MINING REVIEW, APRIL 21, 1990, PP. 4-8.

  • Deposit

    SKILLINGS MINING REVIEW. NORTH AMERICAN IRON ORE INDUSTRY

  • Deposit

    TO APPROACH 100 MILLION GROSS TON PRODUCTION MARK IN 1990.

  • Deposit

    JULY 29, 1989, PP. 19-21.

  • Deposit

    SKILLINGS MINING REVIEW, JULY 26, 1986, P. 20-21.

General comments

Subject category Comment text
Deposit PROPERTY REVIEWED BY RC SMITH, 3-87. AT THIS TIME, THE MINE WAS STILL OPERATING BUT AT REDUCED CAPACITY. FOUR OF 27 SHAFT FURNACES HAVE BEEN MODIFIED TO PRODUCE FLUXED PELLETS, PRIMARILY FOR TEST PURPOSES.

Reporter information

Type Date Name Affiliation Comment
Reporter 07-OCT-96 Dolzani, Roger L. 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 02/25/1980
MSHA mine ID2100824
Mine name (MSHA)Sherman Plant
Current operatorUnited States Steel Corp
Current controller (parent)USX Corp (United States Steel Corp)
Mine typeFacility (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.

Operator history (post-MRDS)

MRDS records operators as of each record's last update (≤ 2019). Some of the operators listed here have since changed hands or dissolved:

  • Cleveland-Cliffs Iron Co. — renamed to Cleveland-Cliffs Inc. (2017)
    Reorganized and renamed Cleveland-Cliffs Inc. in 2017 as the parent shifted from iron-ore focus to steelmaking.

Curated by qvyshift.com from publicly-reported M&A activity (SEC filings, press releases, USGS Mineral Yearbooks). Not authoritative — verify against primary sources before relying on it. The MSHA panel above is the current authoritative source for actively-permitted mines.

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