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MSHA DATABASEMSHA records · 16 contributing sources · snapshot Oct 13, 2026
Grupo Mexico S A B de C V→Asarco LLC→Hayden Concentrator

MINE DETAILS

Hayden Concentrator

ActiveSurfaceCopper Ore NEC
MSHA MINE ID0200826
LOCATIONGila, AZ
PUBLIC RECORD8,669 linked rows

LOCATION

Mine location

1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.

Mine coordinates

2025-01-01 – 2026-10-13Applies to production, safety and portfolio metrics. Silica samples have separate filters.

2025 Q1 – 2026 Q4

JSONCSV

Database snapshot · 2026-10-13. MSHA quarterly production and employment reports.

Coal production

0

reported short tons

  1. 2025 Q10
  2. 2025 Q20
  3. 2025 Q30
  4. 2025 Q40
  5. 2026 Q10
  6. 2026 Q20
  7. 2026 Q3—No usable value reported
  8. 2026 Q4 *—No usable value reported

Hours worked

328,583

reported employee hours

  1. 2025 Q153,733
  2. 2025 Q256,011
  3. 2025 Q357,682
  4. 2025 Q452,287
  5. 2026 Q153,999
  6. 2026 Q254,871
  7. 2026 Q3—No usable value reported
  8. 2026 Q4 *—No usable value reported

Tons per hour

0.00

production ÷ hours worked

  1. 2025 Q10.00
  2. 2025 Q20.00
  3. 2025 Q30.00
  4. 2025 Q40.00
  5. 2026 Q10.00
  6. 2026 Q20.00
  7. 2026 Q3—No usable value reported
  8. 2026 Q4 *—No usable value reported

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
Quarterly production, employment and reporting coverage for Hayden Concentrator
QuarterCoal (short tons)Hours workedTons / hourAvg. employeesCoverage
2025 Q1053,7330.001011/1 mines reporting
2025 Q2056,0110.001001/1 mines reporting
2025 Q3057,6820.001031/1 mines reporting
2025 Q4052,2870.00911/1 mines reporting
2026 Q1053,9990.00991/1 mines reporting
2026 Q2054,8710.001031/1 mines reporting
2026 Q3————No report
2026 Q4————No report

Safety and enforcement

2025-01-01 – 2026-10-13

Violations

64

8 significant & substantial (S&S)

  1. 2025 Q10
  2. 2025 Q26
  3. 2025 Q30
  4. 2025 Q422
  5. 2026 Q10
  6. 2026 Q236
  7. 2026 Q30
  8. 2026 Q4 *0

Accident records

2

0 records classified as fatality

  1. 2025 Q10
  2. 2025 Q21
  3. 2025 Q30
  4. 2025 Q40
  5. 2026 Q10
  6. 2026 Q20
  7. 2026 Q31
  8. 2026 Q4 *0

Proposed penalties · USD

24,106.00

64 of 64 violations with amounts

  1. 2025 Q1—
  2. 2025 Q24,326
  3. 2025 Q3—
  4. 2025 Q46,499
  5. 2026 Q1—
  6. 2026 Q213,281
  7. 2026 Q3—
  8. 2026 Q4 *—

On-site inspection hours

206.75

11 inspections · 11 with hours

  1. 2025 Q11.75
  2. 2025 Q236.00
  3. 2025 Q33.00
  4. 2025 Q468.25
  5. 2026 Q13.25
  6. 2026 Q290.50
  7. 2026 Q34.00
  8. 2026 Q4 *—

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
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q100—0011.8
2025-Q2614,326.0010236.0
2025-Q300—0013.0
2025-Q42226,499.0000368.3
2026-Q100—0013.3
2026-Q236513,281.0000290.5
2026-Q300—1014.0
2026-Q4 *00—000—

Most cited CFR sections

All violations issued in the selected period. Counts combine subsections.

SectionViolationsS&S
30 CFR 56.14112Construction and maintenance of guards.91
30 CFR 56.20003Housekeeping.92
30 CFR 56.4201Inspection.70
30 CFR 47.41Requirement for container labels.60
30 CFR 56.12032Inspection and cover plates.50
30 CFR 56.12004Electrical conductors.40
30 CFR 56.11003Construction and maintenance of ladders.30
30 CFR 56.11001Safe access.21
30 CFR 56.12008Insulation and fittings for power wires and cables.20
30 CFR 56.14100Safety defects; examination, correction and records.20

Safety activity

  1. inspectionF0343DF

    Impoundment Spot Inspection · 4.0 on-site hours

  2. accident220262600021

    HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY

    Accident narrative

    Employee was cleaning rejects at the rodmill discharge and right elbow started hurting. employee became reportable restricted on 09/10/2026.

  3. inspectionF004810

    Impoundment Spot Inspection · 3.5 on-site hours

  4. violation5059118

    56.18002 · $151.00 proposed

  5. violation5059372

    56.12032 · $151.00 proposed

  6. violation5059371

    56.20003(a) · $151.00 proposed

  7. violation5059117

    47.41(a) · $151.00 proposed

  8. violation5059116

    56.9300(a) · $151.00 proposed

  9. violation5059369

    56.20014 · $151.00 proposed

  10. violation5059368

    47.41(a) · $151.00 proposed

  11. violation5059367

    56.12030 · S&S · $2,936.00 proposed

  12. violation5059366

    56.12004 · $151.00 proposed

  13. violation5059115

    56.12032 · $755.00 proposed

  14. violation5059114

    56.4201(a) · $177.00 proposed

  15. violation5059113

    56.14112(a)(1) · $177.00 proposed

  16. violation5059112

    56.11012 · S&S · $883.00 proposed

  17. violation5059111

    56.14112(a)(1) · S&S · $883.00 proposed

  18. violation5059110

    56.12008 · $267.00 proposed

  19. violation5059109

    56.12032 · $267.00 proposed

  20. violation5059108

    56.4201(a)(1) · $177.00 proposed

  21. violation5058997

    56.14101(a)(3) · $177.00 proposed

  22. violation5058996

    56.4201(a)(2) · $177.00 proposed

  23. violation5058995

    56.12032 · $177.00 proposed

  24. violation5058994

    56.14112(a)(1) · $177.00 proposed

  25. violation5058993

    56.4201(a)(1) · $177.00 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.

CURRENT HIERARCHYGrupo Mexico S A B de C V → Asarco LLC → Hayden Concentrator
HISTORY RECORDS412 relationships
INTERVAL CHECKPASScontroller/operator overlap
—

Grupo Mexico S A B de C VcontrolsAsarco LLCoperatesHayden Concentrator

msha-controller-operator-history · controller/operator co-tenure derived on mine 0200826
—

Asarco InccontrolsAsarco IncoperatesHayden Concentrator

msha-controller-operator-history · controller/operator co-tenure derived on mine 0200826
—

British Petroleum Company PLCcontrolsKennecott Ray Mines DivisionoperatesHayden Concentrator

msha-controller-operator-history · controller/operator co-tenure derived on mine 0200826
—

Kennecott Copper CorpcontrolsKennecott Minerals CompanyoperatesHayden Concentrator

msha-controller-operator-history · controller/operator co-tenure derived on mine 0200826
Other 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

167 historical accident/injury rows; 0 coded fatalities and 4,296 lost days across the published record.

ACCIDENT + INJURY RECORD7 since 2021
accidentsmine-production-quarterly
02 / COMPLIANCEwatch

Violations and penalties

1,348 violation rows across the full record; 383 carry an S&S flag and $1,404,969 appears in current assessed amounts.

ENFORCEMENT ACTIVITY145 since 2021
inspectionsviolationsassessed-violationsorders-107a
03 / HEALTHwatch

Occupational health samples

124 personal; 6 area. 1 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 EXPOSURE130 samples
personal-health-samplesarea-samples
04 / PRODUCTIONcontext

Quarterly production and employment

55K employee hours and 103 summed average employees across reported subunits in the latest published quarter.

2026-Q20 tons
mine-production-quarterlymine-production-yearly
05 / LEGALwatch

Contests, conferences and decisions

303 contested-violation rows, 304 civil-penalty docket/decision rows, and 138 conference records linked by issuance number.

POST-ISSUANCE LIFECYCLE745 linked rows
conferencescontested-violationscivil-penalty-dockets-decisions
06 / 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 CONTEXT30 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations
07 / INSPECTIONScontext

Inspections

193 inspection events and 7K published inspection hours across the historical record.

OVERSIGHT COVERAGE38 since 2021
inspectionsviolations

HEALTH SAMPLING

Silica and quartz

Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 2026. 26 silica records across the mine’s published history.

Matching records10 coal · 1 personal · 0 area
Sample status0 not voided0 voided · 1 status not reported
Personal samples with C/E > 101 published ratios · not a citation count

Personal silica samples · concentration / limit

Quarterly mean · published C/E ratio

  1. 2026-Q1—0 measurements
  2. 2026-Q201 measurements
  3. 2026-Q3—0 measurements
  4. 2026-Q4*—0 measurements

— 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.

2026 · Apr 7, 2026–Apr 7, 2026
Date / sampleDataset / analyteOccupation / areaMeasurementSample statusPublished action
000000202601395600Metal/nonmetal personalQuartz, respirable, >1% QtzElectrician0× published limitConcentration: 0000.12 · limit: 0000.00Source unit unspecifiedNot reportedNO ACTIONInspection F027839
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.

EIA MINE CONTEXTNo matched record
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.

TITLE 30 CROSSWALKCurrent through 2026-08-19
30 CFR 56.18002Examination of working places.1 recent row ↗30 CFR 56.12032Inspection and cover plates.2 recent rows ↗30 CFR 56.20003Housekeeping.1 recent row ↗30 CFR 47.41Requirement for container labels.2 recent rows ↗30 CFR 56.9300Berms or guardrails.1 recent row ↗30 CFR 56.20014Prohibited areas for food and beverages.1 recent row ↗30 CFR 56.12030Correction of dangerous conditions.1 recent row ↗30 CFR 56.12004Electrical conductors.1 recent row ↗

RECENT PUBLIC RECORDS

Recent violations and samples

Latest records retained for inspection; aggregates above use the full source history.

VIOLATIONS12 latest shown
505911856.18002Citation
505937256.12032Citation
505937156.20003(a)Citation
505911747.41(a)Citation
505911656.9300(a)Citation
505936956.20014Citation
505936847.41(a)Citation
505936756.12030S&S
OTHER HEALTH SAMPLES8 latest shown

Coal dust, noise and other contaminants. Silica records above ↑

Respirable dust, <.1mgTruck Driver
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgFront-end Loader Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgFront-end Loader Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgElectrician Helper
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Nuisance dust, respirable, <1% QtzBulldozer Operator
C/E: 00.02Concentration: 0000.19 · limit: 0010.00Source unit unspecified
Respirable dust, <.1mgSand Filler (Wet)
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgCleanup Man
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 · contractors167Jun 10, 2003—Sep 1, 2026mine-keyed
Addresses of Recordidentity · logistics1Aug 10, 2022—Aug 10, 2022mine-keyed
Assessed Violationscompliance · legal1,342Sep 23, 2003—Apr 9, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal304Aug 25, 2004—Jan 9, 2026mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal138Oct 16, 2003—Feb 7, 2023mine-keyed
Contested Violationscompliance · legal303Mar 4, 2008—Apr 7, 2026mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety3,692Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety810Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance4Jan 1, 1950—Mar 25, 2003mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance188Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance48Not published—Not publishedmine-keyed
Inspectionssafety · compliance193Sep 23, 2003—Sep 16, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety6Feb 5, 2013—Feb 5, 2013mine-keyed
Metal and Nonmetal Personal Health Sampleshealth · safety124Feb 1, 2005—Apr 8, 2026mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal1,348Sep 23, 2003—Apr 9, 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.