1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Sweetwater

Past Producer in Reynolds county in Missouri, United States with commodities Cadmium, Cobalt, Copper, Lead, Nickel, Silver, Zinc
Map
XML
JSON
KML
A
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Mineral rights holdings
  16. Land status
  17. Ownership information
  18. Production statistics
  19. Reserves and resources
  20. Workings at the site
  21. Links to other databases
  22. Bibliographic references
  23. General comments
  24. Reporter information

Geologic information

Identification information

Deposit ID 10293984
MRDS ID W016746
MAS/MILS ID 0291790008
Record type Deposit
Current site name Sweetwater
Alternate or previous names Ozark Mine, Frank R. Milliken, Ozark Lead, Adair Creek, Milliken Mine

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -91.14823, 37.35977 (WGS84)
Elevation 360
Location accuracy 10(meters)
Relative position On Adair creek, 8 km SW of Reynolds, MO. and 20 km NW of Ellington, MO.

Site location context

Political divisions (FIPS codes)

Reynolds(county)

Missouri(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Midridge(quadrangle 1:24,000 scale)

Spring Valley(quadrangle 1:100,000 scale)

Rolla(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Black(hydrologic unit)

Upper White(hydrologic accounting unit)

Upper White(hydrologic subregion)

Arkansas-White-Red(hydrologic region)

Geographic areas

Country State County
United States Missouri Reynolds
United States Missouri Shannon

Commodities

Commodity Importance
Cadmium Tertiary
Cobalt Critical Tertiary
Copper Tertiary
Lead Primary
Nickel Critical Tertiary
Silver Secondary
Zinc Critical Secondary

Materials information

Materials Type of material
Galena Ore
Sphalerite Ore
Chalcopyrite Ore
Linnaeite Ore
Bornite Ore
Covellite Ore
Digenite Ore
Dolomite Gangue
Calcite Gangue
Dickite Gangue
Marcasite Gangue
Millerite Gangue
Polydymite Gangue
Quartz Gangue

Mineral occurrence model information

Model code 224
USGS model code 32a
Deposit model name Mississippi Valley, S.E. Missouri Pb-Zn
Mark3 model number 42

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite
    Rock unit name Bonneterre Fm.
    Stratigraphic age (youngest) Late Cambrian
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Wacke
    Rock type qualifier dolomitic
    Rock unit name Bonneterre Fm.
    Stratigraphic age (youngest) Late Cambrian
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Mudstone
    Rock unit name Bonneterre Fm.
    Stratigraphic age (youngest) Late Cambrian

Nearby scientific data

Main Entrance (1) -91.14823, 37.35977
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description NW-trending, high-angle reverse fault with approx 100 ft of vertical displacement
Type of structure Local
Structure description NW trending buried Precambrian ridge or series of knobs, against which the Cambrian rocks pinches out.
Type of structure Local
Structure description A gentle anticlinal-synclinal system in the western part of the mine area.

Ore body information

  • Thickness 85M
    Length 12000M
    Width 150M
    Depth to top 430M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 BRECCIA FILL
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 DISSEMINATED
    Type of Orebody #3 REPLACEMENT
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control CONTACT ZONE
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 DOLOMITIZATION
    Type of Wallrock Alter. #2 SILICIFICATION
    Type of Wallrock Alter. #3 PYRITIZATION
    Strike And Dip N00E:
    Minimum Depth to Top 400
    Date of Last Modification 830718
  • Area 160HA
    Field Value
    Total Surface Area (HA) 160
    Date of Last Modification 910418

Controls for ore emplacement

  • Stratigraphic within the Bonneterre fm., breccia, faults, fractures, folds, and flanks of highs.

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Large
Significant Yes
Discovery year 1962
Mining method Open Stope - Room and Pillar
Year of first production 1968
Plant subcategory Flotation
Milling method Flotation

Mining district

District name Southeast Mo

Mineral rights holdings

Type of mineral rights Private Lease
Type of mineral rights Fee Ownership
Type of mineral rights Minerals Only

Land status

Ownership category Mixed

Ownership information

  • Type Owner-Operator
    Owner Asarco (American Smelting And Refining Co.)
    ID 2300458
    Interest 100
    Home office 180 Maiden Lane, New York, N Y 10038
    Year 1987
  • Type Owner
    Owner Bear Creek Mining Co.
  • Type Owner
    Owner Ozark Lead Co.

Production statistics

  • Year 1968
    Description 6.81% Pb, 0.99% Zn, 0.10% Cu, 0.65 Oz Ag 205299 Short Tons Ore Milled
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Lead Lead 7wt-pct
    Trace Copper Copper 0wt-pct
    Minor Silver Silver 18g/mt
    Minor Zinc Zinc 1wt-pct
  • Year 1969
    Description 8.52% Pb, 1.00% Zn, 0.10% Cu, 0.65 Oz Ag 771000 Short Tons Ore Milled
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Lead Lead 9wt-pct
    Trace Copper Copper 0wt-pct
    Minor Silver Silver 18g/mt
    Minor Zinc Zinc 1wt-pct
  • Year 1970
    Description 8.75% Pb, 0.69% Zn, 0.16% Cu, 0.42 Oz Ag 1211600 Short Tons Ore Milled
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Lead Lead 9wt-pct
    Trace Copper Copper 0wt-pct
    Minor Silver Silver 12g/mt
    Minor Zinc Zinc 1wt-pct
  • Year 1971
    Description 5.63% Pb, 0.87% Zn, 0.12% Cu, 0.34 Oz Ag 1013500 Short Tons Ore Milled
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Lead Lead 6wt-pct
    Trace Copper Copper 0wt-pct
    Minor Silver Silver 10g/mt
    Minor Zinc Zinc 1wt-pct
  • Year 1972
    Description 5.58% Pb, 0.85% Zn, 0.16% Cu, 0.36 Oz Ag 1271299 Short Tons Ore Milled
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Lead Lead 6wt-pct
    Trace Copper Copper 0wt-pct
    Minor Silver Silver 10g/mt
    Minor Zinc Zinc 1wt-pct
  • Year 1973
    Description 5.43% Pb, 0.89% Zn, 0.18% Cu, 0.37 Oz Ag 1114100 Short Tons Ore Milled
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Lead Lead 5wt-pct
    Trace Copper Copper 0wt-pct
    Minor Silver Silver 10g/mt
    Minor Zinc Zinc 1wt-pct
  • Year 1974
    Description 5.21% Pb, 0.64% Zn, 0.20% Cu, 0.30 Oz Ag 1464200 Short Tons Ore Milled
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Lead Lead 5wt-pct
    Trace Copper Copper 0wt-pct
    Minor Silver Silver 8g/mt
    Minor Zinc Zinc 1wt-pct
  • Year 1975
    Description 5.05% Pb, 0.59% Zn, 0.15% Cu, 0.29 Oz Ag 1342799 Short Tons Ore Milled
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Lead Lead 5wt-pct
    Trace Copper Copper 0wt-pct
    Minor Silver Silver 8g/mt
    Minor Zinc Zinc 1wt-pct
  • Year 1976
    Description 5.04% Pb, 0.77% Zn, 0.12% Cu, 0.29 Oz Ag 1309299 Short Tons Ore Milled
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Lead Lead 5wt-pct
    Trace Copper Copper 0wt-pct
    Minor Silver Silver 8g/mt
    Minor Zinc Zinc 1wt-pct
  • Year 1977
    Description 4.86% Pb, 0.71% Zn, 0.15% Cu, 0.27 Oz Ag 1387100 Short Tons Ore Milled
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Lead Lead 5wt-pct
    Trace Copper Copper 0wt-pct
    Minor Silver Silver 8g/mt
    Minor Zinc Zinc 1wt-pct
  • Year 1978
    Description 4.85% Pb, 0.62% Zn, 0.09% Cu, 0.27 Oz Ag 1437200 Short Tons Ore Milled
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Lead Lead 5wt-pct
    Trace Copper Copper 0wt-pct
    Minor Silver Silver 8g/mt
    Minor Zinc Zinc 1wt-pct
  • Year 1979
    Description 5.24% Pb, 0.56% Zn, 0.11% Cu, 0.25 Oz Ag 1039799 Short Tons Ore Milled
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Copper Copper 0wt-pct
    Minor Silver Silver 7g/mt
    Major Lead Lead 5wt-pct
    Minor Zinc Zinc 1wt-pct
  • Year 1980
    Description 4.56% Pb, 0.51% Zn, 0.20% Cu, 0.24 Oz Ag 1630200 Short Tons Ore Milled
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Copper Copper 0wt-pct
    Minor Silver Silver 7g/mt
    Major Lead Lead 5wt-pct
    Minor Zinc Zinc 1wt-pct
  • Year 1981
    Description 4.17% Pb, 0.80% Zn, 0.13% Cu, 0.29 Oz Ag 1883100 Short Tons Ore Milled
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Copper Copper 0wt-pct
    Minor Silver Silver 8g/mt
    Major Lead Lead 4wt-pct
    Minor Zinc Zinc 1wt-pct
  • Year 1982
    Description 6.32% Pb, 0.57% Zn, 0.06% Cu, 0.30 Oz Ag 1428700 Short Tons Ore Milled
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Copper Copper 0wt-pct
    Minor Silver Silver 8g/mt
    Major Lead Lead 6wt-pct
    Minor Zinc Zinc 1wt-pct
  • Year 1983
    Description 2 Months Operation Prior To Mine And Mill Plant Shutdown On March 4, 1983 68426 Short Tons Ore Milled During Jan./Feb. 1983
  • Year 1993
    Description Ore Milled/98.5% Recovery 1148 Short Tons
  • Year 1994
    Description Ore Milled/98.3% Recovery 1260 Short Tons
  • Year 1995
    Description Silver Production 272000 T Oz/Yr Silver
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Silver Silver 8460146.83g
  • Year 1995
    Description Ore Milled/98.1% Recovery 1269 Short Tons

Comments on the production information

  • CAPACITY FIGURE INCLUDES 15% DILUTION. PB, CU, AND AG RECOVERY VALUES FOR THE PB CONCENTRATE AND PB, ZN, CU, AND AG RECOVERY VALUES FOR THE ZN CONCENTRATE ARE DERIVED FROM 1981 U.S.B.M. PRODUCTION STATISTICS OTHER RECOVERY VALUES ARE TAKEN FOM TABLE IV, GRANT GO 155019 BY HAGNI AND JESSEY. FEED AND CONCENTRATE GRADES ARE BASED UPON ZERO PERCENT MOISTURE.
  • DUE TO LACK OF ADEQUATE SPACE FOR INCLUSION OF SIGNIFICANT VALUES IN THE RECOVERY SECTION OF THE "Y" DATA SET, THE READER SHOULD BE AWARE THAT THE FOLLOWING VALUES HAVE A GREATER DEGREE OF STATISTICAL SIGNIFICANCE THAN DO THE ROUNDED VALUES PRESENTED IN THE "Y" SETS ABOVE: PRODUCT Y-LINE NO. RECOVERY (%) 1C 01 98.4 1D 02 78.5 2G 01 98.1 2G 02 15.5 2G 06 8.9 2G 07 22.3 2H 02 78.5 2I 03 23.9 2J 03 3.1

Reserves and resources

  • Type In-situ
    Estimate year 1994
    Measured 17870000mt ore
    Demonstrated 17870000mt ore
    Total resources 17870000mt ore
    Commodity Subtype Grade units Group Importance Year
    Lead Pb 4.83 wt-pct Lead Major 1994
    Zinc Zn 0.62 wt-pct Zinc Minor 1994
    Silver Ag 3.4 g/mt Silver Minor 1994
  • Type In-situ
    Estimate year 1996
    Demonstrated 10341mt ore
    Total resources 10341mt ore
    Commodity Subtype Grade units Group Importance Year
    Lead Pb 4.51 wt-pct Lead Major 1996
    Zinc Zn 0.38 wt-pct Zinc Minor 1996
    Silver Ag 3.43 g/mt Silver Minor 1996

Comments on the reserve resource information

  • FORMERLY THE FRANK R. MILLIKEN MINE, MISSOURI, ALSO OZARK LEAD, AND ADAIR CREEK MINES. UPDATED IN 10/88 USING INTER. PB/ZN STUDY AND BROOK HUNT STUDY DATA. INHOUSE DATA OLD AND OUT OF DATE. 1994 UPDATE FROM ASARCO SEC FROM 10-K REPT. 12/31/93, PP. A14-A18

Workings at the site

  • Type of workings Underground
    Overall depth 441M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method ESTIMATE
    Mining Method ROOM AND PILLAR 10-34
    Swell Factor .81
    Percent Waste Rock 1
    Percent Recovery 90
    Hardness of Rock SOFT NONPLASTIC FISSURED MODERATE WATER
    Rock Characteristics ONE SYSTEM OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING MAY BACK SLAB
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Number of Shafts 6
    Length of Inclines (m) 914
    Slope of Inclines 15
    Number of Inclines 1
    1st Condition of Workings UNKNOWN
    2nd Condition of Workings OPEN
    Capacity 7257.4
    Capacity Units MT ORE/DAY
    Unit Production Cost 9.58
    Units of Production $/MT ORE
    Operating Days per Year 252
    Operating Shifts per Day 3
    Year of Information 1979
  • Type of workings Underground
    Overall depth 441M
    Field Value
    MAS Development Schedule # 2
    Mining Record # 4
    Status of Mining Method ESTIMATE
    Mining Method ROOM AND PILLAR 10-34
    Swell Factor .81
    Percent Waste Rock 1
    Percent Recovery 90
    Hardness of Rock SOFT NONPLASTIC FISSURED MODERATE WATER
    Rock Characteristics ONE SYSTEM OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING MAY BACK SLAB
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Number of Shafts 6
    Length of Inclines (m) 914
    Slope of Inclines 15
    Number of Inclines 1
    1st Condition of Workings UNKNOWN
    2nd Condition of Workings OPEN
    Capacity 7257.4
    Capacity Units MT ORE/DAY
    Unit Production Cost 9.58
    Units of Production $/MT ORE
    Operating Days per Year 252
    Operating Shifts per Day 3
    Year of Information 1979

Reference information

Bibliographic references

  • Geology

    MOUAT,M.M., AND C.W. CLENDENIN,JR. OZARK LEAD COMPANY MINE, VIRBURNUM TREND, SOUTHEAST MISSOURI. CHAPTER IN GUIDEBOOK TO THE GEOLOGY AND ORE DEPOSITS OF SELECTED MINES, MISSOURI DEPT. NAT. RES. REPT. INVESTIGATIONS NO. 58,1975, PP. 48-56.

  • Deposit

    MOUAT, M.M., AND CLENDENIN, C.W., 1977, GEOLOGY OF THE OZARK LEAD COMPANY MINE, VIBURNUM TREND, SOUTHEAST MISSOURI: ECON. GEOL., V. 72, NO. 3, P. 398-407.

  • Deposit

    RYAN, J.P., AND MARTIN, J.A., 1971, THE MINERAL INDUSTRY OF MISSOURI: USBM MINERALS YEARBOOK, V. 2, AREA REPORTS: DOMESTIC, P. 423-435.

  • Production

    MINERAL YEARBOOK, 1971, V. 2, P. 431

  • Production

    CH. IN AIME WORLD SYMPOSIUM ON MINING AND METALLURGY OF LEAD AND ZINC, ED. BY D. O. RAUSCH AND B. C. MARIACHER. THE AMERICAN INSTITUTE OF MINING, METALLURGICAL, AND PETROLEUM ENGINEERS. N.Y., N.Y., V. I, 1970, PP. 483-498.

  • Production

    WHITE, T. G., AND K. L. CLIFFORD. MILLING OF LEAD-ZINC ORES - USA. CH. IN LEAD-ZINC UPDATE, ED. BY D. O. RAUSCH, F. M. STEPHENS, JR., AND B. C. MARIACHER. SOCIETY OF MINING ENGINEERS OF THE AMERICAN INSTITUTE OF MINING METALLURGICAL AND PETROLEUM ENGINEERS, N.Y., N.Y., 1977, PP. 125, 127, 135, 137, 140-143.

  • Production

    LAGERGREN, M.A., AND A.W. GRIFFITH. DESIGN CONSTRUCTION AND OPERATION OF OZARK LEAD COMPANY'S TAILINGS DISPOSAL SYSTEM. PROC. (ENTITLED "TAILINGS DISPOSAL TODAY") OF THE FIRST INTERNATIONAL TAILING SYMPOSIUM, OCT. 31 - NOV. 3, 1972, MILLER FREEMAN PUBLICATIONS, SAN FRANCISCO, CA., 1973, PP. 714-733.

  • Reserve-Resource

    ASARCO INC. SEC FORM 10-K REPORT, DEC 31, 1993, PP. A16-A18.

  • Reserve-Resource

    SKILLINGS MINING REVIEW MAGAZINE. ASARCO SLATES SWEETWATER MINE FOR LIMITED PRODUCTION. AUG 8, 1987. P. 3.

  • Reserve-Resource

    ASARCO INCORPORATED 1995-10K

  • Workings

    ENGINEERING AND MINING JOURNAL. THE NEW LEAD BELT. OCTOBER 1970, PP. 67-78.

  • Workings

    CHRISTIANSEN, C.R., AND J.J. SCOTT. MINING SYSTEMS IN THE NEW LEAD BELT OF SOUTHEAST MISSOURI. CHAPTER 11 IN VOL. 1 OF LEAD & ZINC, A.I.M.E. SYMPOSIUM, 1970, PP. 206-217.

  • Workings

    GERITY, C.E. OZARK'S HAULAGE SYSTEM GETS THE LEAD OUT. MINING ENGINEERING, NOVEMBER 1972, PP.41-44.

  • Workings

    WEAKLY, L. A. ORE MOVING LOGISTICS FOR ROOM AND PILLAR MINES IN THE VIBURNUM TREND. MINING ENGINEERING, APRIL 1982, PP. 406-407.

  • Deposit

    DRESSEL, W. M. (FORMER STATE LIASON OFFICER). PERSONAL COMMUNICATIONS, 8-2-79.

  • Deposit

    ASARCO INCORPORATED 10-K

General comments

Subject category Comment text
Deposit U.S. BUMINES MINERALS AVAILABILITY SYSTEM GRANT NO. GO 155019 BY R.D. HAGNI AND D.R. JESSEY, 1976, ENTITLED "COLLECTION, EVALUATION, AND CLASSIFICATION OF MINERAL RESOURCES INFORMATION ON COBALT AND NICKEL IN MISSOURI". EVALUATION I.F.O.C., 1979. THE OZARK MINE OFFICIALLY BECAME THE FRANK R. MILLIKEN MINE IN CEREMONIES AT THE MINE ON AUGUST 2, 1979. MILLIKEN IS A PAST PRESIDENT OF KENNECOTT COPPER CORP. (REF. 001). THE ORIGINAL I.F.O.C. EVALUATION WAS UPDATED DURING FISCAL YEAR 1983. ON MARCH 4, 1983, KENNECOTT SHUT DOWN ITS OZARK LEAD COMPANY DIVISION AS A RESULT OF CONTINUINGLY-POOR ECONOMIC AND MARKET CONDITIONS. THE PROPERTY REMAINS ON A TEMPORARY SHUTDOWN STATUS AT THE TIME OF THE I.F.O.C. PROPERTY EVALUATION UPDATE. PROPERTY UPDATED SEPT 1987

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-76 Weeks, Robert U.S. Geological Survey
Reporter 29-JAN-97 Difrancesco, Carl A. 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)

StatusActive since 04/04/1988
MSHA mine ID2300458
Mine name (MSHA)Sweetwater Mine/Mill
Current operatorThe Doe Run Company
Current controller (parent)Renco Group
Mine typeUnderground (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:

  • Asarco (American Smelting And Refining Co.) — acquired by Asarco LLC, subsidiary of Grupo México (2009)
    American Smelting and Refining Co. Filed Chapter 11 in 2005; acquired out of bankruptcy by Grupo México in 2009.

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.

Maps centered on this site