MINE DETAILS
Northshore Mining Company
MSHA MINE ID2100831
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Northshore Mining Company47.29250, -91.25694Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-13. MSHA quarterly production and employment reports.
Coal production
0reported short tons
Hours worked
875,695reported employee hours
Tons per hour
0.00production ÷ hours worked
Missing values appear as —. Totals use available reports. Tons per hour requires production and hours for the same quarters and a nonzero hours total. * Striped bars mark partial mine coverage or an incomplete quarter. See the table for coverage.
Quarterly data and reporting coverage
| Quarter | Coal (short tons) | Hours worked | Tons / hour | Avg. employees | Coverage |
|---|---|---|---|---|---|
| 2025 Q1 | 0 | 143,056 | 0.00 | 291 | 1/1 mines reporting |
| 2025 Q2 | 0 | 148,326 | 0.00 | 293 | 1/1 mines reporting |
| 2025 Q3 | 0 | 146,892 | 0.00 | 289 | 1/1 mines reporting |
| 2025 Q4 | 0 | 138,404 | 0.00 | 286 | 1/1 mines reporting |
| 2026 Q1 | 0 | 143,422 | 0.00 | 288 | 1/1 mines reporting |
| 2026 Q2 | 0 | 155,595 | 0.00 | 302 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
19336 significant & substantial (S&S)
Accident records
60 records classified as fatality
Proposed penalties · USD
138,077.00193 of 193 violations with amounts
On-site inspection hours
735.2515 inspections · 15 with hours
Counts are published records, including contractor records. * The quarter was incomplete at the snapshot date; recent counts may rise as reports arrive. — means no reported amount or hours. Portfolio totals use current membership.
Quarterly safety data
| Quarter | Violations | S&S | Proposed USD | Accident records | Fatality records | Inspections | On-site hours |
|---|---|---|---|---|---|---|---|
| 2025-Q1 | 21 | 3 | 23,359.00 | 2 | 0 | 3 | 177.0 |
| 2025-Q2 | 0 | 0 | — | 2 | 0 | 2 | 17.8 |
| 2025-Q3 | 3 | 0 | 685.00 | 0 | 0 | 2 | 26.5 |
| 2025-Q4 | 23 | 4 | 11,932.00 | 1 | 0 | 3 | 219.0 |
| 2026-Q1 | 82 | 17 | 50,159.00 | 0 | 0 | 3 | 288.0 |
| 2026-Q2 | 64 | 12 | 51,942.00 | 1 | 0 | 2 | 7.0 |
| 2026-Q3 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY
Accident narrative
The employee was stepping down from the 83/84 drop chute door and stepped on the wash pan causing the left foot to extend. The employee felt pain in the left ankle after stepping down. After medical evaluation it was determined that the left Achilles tendon was ruptured.
Compliance Follow-up Inspection · 4.5 on-site hours
56.20003(a) · S&S · $2,712.00 proposed
56.14207 · $336.00 proposed
56.12068 · $336.00 proposed
56.11003 · $151.00 proposed
56.20003(b) · $209.00 proposed
56.11003 · $151.00 proposed
56.12028 · $642.00 proposed
56.14112(a)(2) · $336.00 proposed
56.20003(c) · $226.00 proposed
56.20003(c) · $151.00 proposed
56.20003(b) · S&S · $2,312.00 proposed
56.20003(b) · S&S · $2,312.00 proposed
Impoundment Spot Inspection · 2.5 on-site hours
56.4601 · $151.00 proposed
56.20003(c) · $151.00 proposed
56.11002 · $193.00 proposed
56.20003(b) · $226.00 proposed
56.4601 · $151.00 proposed
56.20008(a) · $151.00 proposed
56.9300(b) · $226.00 proposed
56.16006 · $336.00 proposed
56.12032 · $336.00 proposed
56.20003(b) · $504.00 proposed
Safety sources and definitions
MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-13.
Counts describe published rows, including contractor records; accident records are not distinct incidents or numbers of people injured.
Zero means no matching records in the imported sources, not proof of no events. Historical coverage differs by source; absence before a source begins reporting is not a zero incident rate. Invalid or absent dates and records after the snapshot are excluded.
S&S means SIG_SUB=Y. Fatality records use DEGREE_INJURY_CD=01. Proposed penalties are not final assessed or paid amounts; missing dollar values are omitted.
Inspection hours are SUM_TOTAL_ON_SITE_HOURS attributed to the inspection start date, without supervisor/trainee hours. Missing hours are omitted; a started inspection may still be open.
Portfolio totals use current mine membership, including events before the current owner or operator's tenure.
CFR headings link to the current Title 30 index; they are not historical legal determinations.
OWNERSHIP
Operator and controller history
Current ownership comes from MSHA Mines. Historical start and end dates come from MSHA Controller and Operator History.
—
Cleveland-Cliffs InccontrolsNorthshore Mining CompanyoperatesNorthshore Mining Company
msha-controller-operator-history · controller/operator co-tenure derived on mine 2100831—
Cliffs Minnesota Minerals CompanycontrolsNorthshore Mining CompanyoperatesNorthshore Mining Company
msha-controller-operator-history · controller/operator co-tenure derived on mine 2100831—
Cyprus Amax Minerals CompanycontrolsCyprus Northshore Mining CorpoperatesNorthshore Mining Company
msha-controller-operator-history · controller/operator co-tenure derived on mine 2100831—
Armco Inc et alcontrolsReserve Mining CompanyoperatesNorthshore Mining Company
msha-controller-operator-history · controller/operator co-tenure derived on mine 2100831—
L T V Steel Corp et alcontrolsReserve Mining CompanyoperatesNorthshore Mining Company
msha-controller-operator-history · controller/operator co-tenure derived on mine 2100831Other historical summaries · source-specific periods
RECORD SUMMARY
Production, safety and enforcement
These summaries use the periods stated on each card, independently of the reporting period above.
01 / SAFETYwatch
Accidents and injuries
165 historical accident/injury rows; 0 coded fatalities and 3,213 lost days across the published record.
ACCIDENT + INJURY RECORD23 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
4,731 violation rows across the full record; 751 carry an S&S flag and $2,967,398 appears in current assessed amounts.
ENFORCEMENT ACTIVITY791 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
305 personal; 18 area. 11 personal-sample rows have a published C/E ratio above 1; 0 noise rows have an action-level or PEL dose above 100%. These are separate measures, not a silica exceedance count. Silica results and sample status are shown separately.
OCCUPATIONAL EXPOSURE323 samples
personal-health-samplesarea-samples04 / PRODUCTIONcontext
Quarterly production and employment
156K employee hours and 302 summed average employees across reported subunits in the latest published quarter.
2026-Q20 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
935 contested-violation rows, 937 civil-penalty docket/decision rows, and 31 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE1,903 linked rows
conferencescontested-violationscivil-penalty-dockets-decisions06 / CONTRACTORScontext
Contractors
Contractors are linked through this mine’s violation or accident records. Their production and hours cover all their operations, so they are not included in this mine’s totals.
ENTITY-LEVEL CONTEXT52 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
153 inspection events and 20K published inspection hours across the historical record.
OVERSIGHT COVERAGE45 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 2026. 92 silica records across the mine’s published history.
Personal silica samples · concentration / limit
Quarterly mean · published C/E ratio
— No eligible measurements. * Quarter in progress. Means describe the available samples, not average exposure across the mine.
Quartz % is the sample’s quartz content; µg/m³ is its reported concentration. Personal C/E is the ratio to the limit published with that sample. Personal and area concentration units and void status are not specified in those source files.
| Date / sample | Dataset / analyte | Occupation / area | Measurement | Sample status | Published action |
|---|---|---|---|---|---|
| 000000202601134300 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Pelletizer Operator | 0.67× published limitConcentration: 0001.45 · limit: 0002.17Source unit unspecified | Not reported | NO ACTIONInspection F02F791 |
| 000000202600206500 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Pelletizer Operator | 0.34× published limitConcentration: 0000.78 · limit: 0002.27Source unit unspecified | Not reported | NO ACTIONInspection F02F78A |
| 000000202600206600 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Pelletizer Operator | 2.42× published limitConcentration: 0004.57 · limit: 0001.89Source unit unspecified | Not reported | CITATION/ORDER ISSUEDInspection F02F78A |
| 000000202600206700 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Dump Operator | 0.4× published limitConcentration: 0000.18 · limit: 0000.45Source unit unspecified | Not reported | NO ACTIONInspection F02F78A |
Sources and interpretation
- Coal means use numeric concentrations from samples marked not voided, excluding control/invalid sample types and dates after the snapshot. Missing values remain null; reported zeroes remain zero.
- Quarterly means describe available samples, not mine-wide or worker-average exposure. Quarters with no eligible measurements remain empty; the current quarter is partial.
- Personal C/E is MSHA's published concentration-to-limit ratio. A value above 1 is not by itself a citation or a determination under the 2024 silica rule. Personal and area files do not publish a void-status field.
- Area records include bulk-dust analyses and are kept separate from personal exposure results. Their concentration units are not specified in the source dictionary.
- Missing samples do not establish safe conditions. Coal quartz percentage and concentration are separate measures. No compliance threshold is inferred for coal samples.
Coal quartz field definitions ↗Metal/nonmetal personal field definitions ↗Metal/nonmetal area field definitions ↗
EIA + TITLE 30
EIA production and cited regulations
EIA annual figures are reported separately from MSHA. Regulation links use the current eCFR snapshot.
Not present in the 2024 EIA coal workbook.
This can mean the operation is non-coal, inactive for the annual period, or outside the EIA-7A reporting population.
30 CFR 56.20003Housekeeping.6 recent rows ↗30 CFR 56.14207Parking procedures for unattended equipment.1 recent row ↗30 CFR 56.12068Locking transformer enclosures.1 recent row ↗30 CFR 56.11003Construction and maintenance of ladders.2 recent rows ↗30 CFR 56.12028Testing grounding systems.1 recent row ↗30 CFR 56.14112Construction and maintenance of guards.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
649066056.20003(a)S&S
511203456.14207Citation
511176456.12068Citation
511203356.11003Citation
511203256.20003(b)Citation
511203156.11003Citation
511203056.12028Citation
511176356.14112(a)(2)Citation
Coal dust, noise and other contaminants. Silica records above ↑
Nuisance dust, respirable, <1% QtzCrusher Oper/Worker
C/E: 00.81Concentration: 0008.05 · limit: 0010.00Source unit unspecified
Respirable dust, <.1mgCrusher Oper/Worker
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgCrusher Oper/Worker
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
SOURCE COVERAGE
Reporting dates and coverage
16 datasets contain linked records. Missing datasets are listed below.
DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors165Jan 2, 2000—Jun 8, 2026mine-keyed
Addresses of Recordidentity · logistics1Sep 1, 1989—Sep 1, 1989mine-keyed
Assessed Violationscompliance · legal4,725Feb 1, 2000—May 6, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal937Oct 15, 2008—Aug 13, 2025mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal31Jul 18, 2007—Jan 20, 2026mine-keyed
Contested Violationscompliance · legal935Mar 28, 2007—Apr 8, 2026mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety5,908Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety1,277Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance5Jan 1, 1950—May 14, 2008mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance212Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance54Not published—Not publishedmine-keyed
Inspectionssafety · compliance153Jan 31, 2000—May 6, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety18Mar 2, 2006—Apr 30, 2014mine-keyed
Metal and Nonmetal Personal Health Sampleshealth · safety305Feb 1, 2001—Mar 17, 2026mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal4,731Feb 1, 2000—May 6, 2026mine-keyed
107(a) Orders Issuedsafety · compliance—No published rowsabsent / not applicable
NOTES
Limitations
- Contractor production is entity-level and is never represented as mine-attributable.
- Missing rows can mean no event, publication delay, identity mismatch, or inapplicability.