| Deposit ID | 10122088 |
|---|---|
| MAS/MILS ID | 0271370123 |
| Record type | Site |
| Current site name | Knox Extension Mine |
| Point of reference | Ore Body |
|---|---|
| Geographic coordinates: | -92.20799, 47.5656 (WGS84) |
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)
| Country | State | County |
|---|---|---|
| United States | Minnesota | St. Louis |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| 4th Principal | 059 N | 014 W | 26 | C | Minnesota |
| Commodity | Importance |
|---|---|
| Iron | Primary |
| Ore Body (1) | Gunflint (~1,878 Ma), Biwabik, and Emily Iron Formations |
|---|
| Operation type | Surface |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Significant | No |
| Type of mineral rights | Fee Ownership |
|---|---|
| Type of mineral rights | Private Lease |
| Ownership category | Private |
|---|
| Type | Operator |
|---|---|
| Owner | Pittsburgh Pacific Co. |
| ID | 2101673 |
| Home office | Minnesota |
| Year | 1981 |
| Type | Owner |
|---|---|
| Owner | U.S. Steel Corp. |
| ID | 2101673 |
| Interest | 100 |
| Home office | Pennsylvania |
| Year | 1981 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0271370123 | |
| Mine Safety and Health Administration | MSHA | MSHA | 2101673 |
MINNESOTA MINING DIRECTORY, 1980,P.104
MINERAL RESOURCES RESEARCH CENTER. MINNESOTA MINING
DIRECTORY - 1981, ED. BY W.D. TRETHEWAY. UNIV. OF MINN.,
MINNEAPOLIS, MINN., 1981, P. 102.
GENERAL HIGHWAY MAP OF ST. LOUIS COUNTY
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-DEC-1983 | Reynolds | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
| Status | Abandoned since 06/24/1981 |
|---|---|
| MSHA mine ID | 2101673 |
| Mine name (MSHA) | Knox Extention Mine |
| Current operator | Pittsburgh Pacific Company |
| Current controller (parent) | Binger E T & J D Boentje |
| Mine type | Surface (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.
MRDS records operators as of each record's last update (≤ 2019). Some of the operators listed here have since changed hands or dissolved:
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.