MINE DETAILS
STILLWATER MINE
MSHA MINE ID2401490
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- STILLWATER MINE45.38389, -109.87278Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-18. MSHA quarterly production and employment reports.
Coal production
0reported short tons
Hours worked
1,204,815reported 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 | 204,019 | 0.00 | 438 | 1/1 mines reporting |
| 2025 Q2 | 0 | 198,054 | 0.00 | 427 | 1/1 mines reporting |
| 2025 Q3 | 0 | 196,541 | 0.00 | 426 | 1/1 mines reporting |
| 2025 Q4 | 0 | 196,163 | 0.00 | 432 | 1/1 mines reporting |
| 2026 Q1 | 0 | 206,996 | 0.00 | 424 | 1/1 mines reporting |
| 2026 Q2 | 0 | 203,042 | 0.00 | 426 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-18
Violations
34140 significant & substantial (S&S)
Accident records
91 records classified as fatality
Proposed penalties · USD
654,050.00337 of 341 violations with amounts
On-site inspection hours
1,669.0025 inspections · 25 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 | 48 | 1 | 21,792.00 | 0 | 0 | 5 | 223.0 |
| 2025-Q2 | 20 | 7 | 39,122.00 | 4 | 0 | 4 | 248.5 |
| 2025-Q3 | 81 | 3 | 75,365.00 | 2 | 1 | 3 | 349.0 |
| 2025-Q4 | 57 | 12 | 136,584.00 | 1 | 0 | 2 | 209.3 |
| 2026-Q1 | 56 | 3 | 65,836.00 | 0 | 0 | 5 | 228.8 |
| 2026-Q2 | 57 | 11 | 303,286.00 | 0 | 0 | 4 | 208.5 |
| 2026-Q3 | 22 | 3 | 12,065.00 | 2 | 0 | 2 | 202.0 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
Impoundment Spot Inspection · 6.0 on-site hours
Regular Safety and Health Inspection · 196.0 on-site hours
103 (g) Written Notification Hazard Complaint Inspectio · 16.0 on-site hours
103 (g) Written Notification Hazard Complaint Inspectio · 3.5 on-site hours
Regular Safety and Health Inspection · 186.8 on-site hours
Impoundment Spot Inspection · 2.3 on-site hours
Compliance Follow-up Inspection · 23.5 on-site hours
Compliance Follow-up Inspection · 0.8 on-site hours
Spot Inspection · 3.0 on-site hours
Impoundment Spot Inspection · 3.0 on-site hours
Regular Safety and Health Inspection · 198.5 on-site hours
Impoundment Spot Inspection · 3.0 on-site hours
Regular Safety and Health Inspection · 206.3 on-site hours
Impoundment Spot Inspection · 2.3 on-site hours
Regular Safety and Health Inspection · 315.5 on-site hours
Fatal Accident Investigation · 31.3 on-site hours
Impoundment Spot Inspection · 3.0 on-site hours
103 (g) Written Notification Hazard Complaint Inspectio · 0.0 on-site hours
Regular Safety and Health Inspection · 117.3 on-site hours
Non-Fatal Accident Investigation · 128.3 on-site hours
Compliance Follow-up Inspection · 3.0 on-site hours
Verbal Hazard Complaint Inspections · 2.0 on-site hours
103 (g) Written Notification Hazard Complaint Inspectio · 5.0 on-site hours
Regular Safety and Health Inspection · 211.3 on-site hours
Impoundment Spot Inspection · 1.8 on-site hours
Safety sources and definitions
MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-18.
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.
—
Sibanye Stillwater LimitedcontrolsStillwater Mining CompanyoperatesSTILLWATER MINE
msha-controller-operator-history · controller/operator co-tenure derived on mine 2401490—
Deilmann-HanielcontrolsJ S Redpath CorpoperatesSTILLWATER MINE
msha-controller-operator-history · controller/operator co-tenure derived on mine 2401490—
Stillwater Mining CompanycontrolsStillwater Mining CompanyoperatesSTILLWATER MINE
msha-controller-operator-history · controller/operator co-tenure derived on mine 2401490—
Manville Corp Et AlcontrolsStillwater Mining CompanyoperatesSTILLWATER MINE
msha-controller-operator-history · controller/operator co-tenure derived on mine 2401490—
Atlantic Richfield CompanycontrolsAnaconda Minerals CompanyoperatesSTILLWATER MINE
msha-controller-operator-history · controller/operator co-tenure derived on mine 2401490—
James S RedpathcontrolsJ S Redpath CorpoperatesSTILLWATER MINE
msha-controller-operator-history · controller/operator co-tenure derived on mine 2401490Other 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
1,322 historical accident/injury rows; 10 coded fatalities and 27,346 lost days across the published record.
ACCIDENT + INJURY RECORD134 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
5,949 violation rows across the full record; 1,072 carry an S&S flag and $2,929,655 appears in current assessed amounts.
ENFORCEMENT ACTIVITY1,387 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
674 personal; 24 area. 58 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 EXPOSURE698 samples
personal-health-samplesarea-samples04 / PRODUCTIONcontext
Quarterly production and employment
203K employee hours and 426 summed average employees across reported subunits in the latest published quarter.
2026-Q20 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
596 contested-violation rows, 765 civil-penalty docket/decision rows, and 379 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE1,740 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 CONTEXT92 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
452 inspection events and 79K published inspection hours across the historical record.
OVERSIGHT COVERAGE120 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 18, 2026. 13 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 |
|---|---|---|---|---|---|
| No silica records match these filters. Missing samples do not establish safe conditions. | |||||
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 57.12041Design of switches and starting boxes.1 recent row ↗30 CFR 57.11012Protection for openings around travelways.1 recent row ↗30 CFR 57.11051Escape routes.1 recent row ↗30 CFR 57.12002Controls and switches.1 recent row ↗30 CFR 57.20003Housekeeping.1 recent row ↗30 CFR 57.11001Safe access.1 recent row ↗30 CFR 57.16006Protection of gas cylinder valves.2 recent rows ↗30 CFR 57.4201Inspection.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
521233457.12041Citation
521213657.11012S&S
521213557.11051(a)Citation
521233357.12002S&S
521233257.20003(a)S&S
521213457.11001Citation
505800757.16006Citation
505800657.4201(a)(1)Citation
Coal dust, noise and other contaminants. Silica records above ↑
Nuisance dust, respirable, <1% QtzMiner, Stope
C/E: 00.02Concentration: 0000.20 · limit: 0010.00Source unit unspecified
Nuisance dust, respirable, <1% QtzMiner, Stope
C/E: 00.04Concentration: 0000.43 · limit: 0010.00Source unit unspecified
Nuisance dust, respirable, <1% QtzMiner, Stope
C/E: 00.03Concentration: 0000.29 · limit: 0010.00Source unit unspecified
Nuisance dust, respirable, <1% QtzMiner, Stope
C/E: 00.06Concentration: 0000.56 · limit: 0010.00Source unit unspecified
TC from EC @ 160Mucking Mach. Operator
C/E: 00.00Concentration: 0000.00 · limit: 0160.00Source unit unspecified
TC @ 160Mucking Mach. Operator
C/E: 00.55Concentration: 0088.00 · limit: 0160.00Source unit unspecified
ORGANIC CARBONMucking Mach. Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
EC @ 160Mucking Mach. Operator
C/E: 00.36Concentration: 0058.00 · limit: 0160.00Source unit unspecified
SOURCE COVERAGE
Reporting dates and coverage
16 datasets contain linked records. Missing datasets are listed below.
DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors1,322Jan 3, 2000—Aug 15, 2026mine-keyed
Addresses of Recordidentity · logistics1May 15, 1987—May 15, 1987mine-keyed
Assessed Violationscompliance · legal5,865Jan 25, 2000—Jul 13, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal765Jul 24, 2000—Sep 30, 2026mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal379Apr 12, 2000—Dec 5, 2024mine-keyed
Contested Violationscompliance · legal596Jun 5, 2002—Apr 28, 2026mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety11,144Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety2,332Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance6Oct 1, 1979—Sep 4, 1996mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance424Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance108Not published—Not publishedmine-keyed
Inspectionssafety · compliance452Jan 25, 2000—Jul 8, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety24Apr 27, 2005—Mar 3, 2026mine-keyed
Metal and Nonmetal Personal Health Sampleshealth · safety674Aug 23, 2000—Mar 4, 2026mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal5,949Jan 25, 2000—Jul 13, 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.