MSHA DATABASEMSHA records · 13 contributing sources · snapshot Oct 13, 2026

MINE DETAILS

Leetsdale PA

ActiveFacilityAlumina
MSHA MINE ID3610222
LOCATIONAllegheny, PA
PUBLIC RECORD268 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.

Violations

21

3 significant & substantial (S&S)

  1. 2025 Q14
  2. 2025 Q22
  3. 2025 Q30
  4. 2025 Q40
  5. 2026 Q10
  6. 2026 Q20
  7. 2026 Q315
  8. 2026 Q4 *0

Accident records

1

0 records classified as fatality

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

Proposed penalties · USD

1,000.00

6 of 21 violations with amounts

  1. 2025 Q1698
  2. 2025 Q2302
  3. 2025 Q3—
  4. 2025 Q4—
  5. 2026 Q1—
  6. 2026 Q2—
  7. 2026 Q3—
  8. 2026 Q4 *—

On-site inspection hours

80.00

4 inspections · 4 with hours

  1. 2025 Q121.00
  2. 2025 Q215.50
  3. 2025 Q3—
  4. 2025 Q424.50
  5. 2026 Q1—
  6. 2026 Q2—
  7. 2026 Q319.00
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q141698.0000121.0
2025-Q220302.0000115.5
2025-Q300—000—
2025-Q400—00124.5
2026-Q100—000—
2026-Q200—100—
2026-Q3152—00119.0
2026-Q4 *00—000—

Most cited CFR sections

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

Safety activity

  1. violation5179509

    56.14100(c)

  2. violation5179508

    56.14100(b)

  3. violation5179507

    56.13011

  4. violation5179506

    56.12034

  5. violation5179505

    56.12004

  6. violation5179504

    56.13011

  7. violation5179503

    56.14112(a)(1) · S&S

  8. violation5179502

    56.12004

  9. inspectionF0382A3

    Regular Safety and Health Inspection · 19.0 on-site hours

  10. violation5179501

    56.20003(a) · S&S

  11. violation5179500

    56.12032

  12. violation5179499

    56.4104(b)

  13. violation5179498

    56.16006

  14. violation5179497

    56.12034

  15. violation5179496

    56.12032

  16. violation5179495

    56.11027

  17. accident220262100011

    SLIP OR FALL OF PERSON · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    Hitting the discharge chute to loosen material, EE stood on top platform of a 3 ft. ladder while beating on the chute which ultimately caused EE to lose EE's balance. EE was able to land on EE's feet, but EE landed awkwardly on EE's knee.

  18. inspectionF01C61F

    Regular Safety and Health Inspection · 24.5 on-site hours

  19. inspectionF011E6D

    Regular Safety and Health Inspection · 15.5 on-site hours

  20. violation9855900

    47.44(b) · $151.00 proposed

  21. violation9855899

    56.4502(c) · $151.00 proposed

  22. violation9808258

    48.23(c)(2) · $151.00 proposed

  23. violation9808257

    56.20003(a) · S&S · $245.00 proposed

  24. inspectionF0112CB

    Regular Safety and Health Inspection · 21.0 on-site hours

  25. violation9808256

    56.14112(a)(1) · $151.00 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 HIERARCHYOYAK Group → Almatis Inc → Leetsdale PA
HISTORY RECORDS25 relationships
INTERVAL CHECK1 REVIEWcontroller/operator overlap
—

Almatis Holdings 1 BVcontrolsAlmatis IncoperatesLeetsdale PA

msha-controller-operator-history · controller/operator co-tenure derived on mine 3610222
—

OYAK GroupcontrolsAlmatis IncoperatesLeetsdale PA

msha-controller-operator-history · controller/operator co-tenure derived on mine 3610222
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

10 historical accident/injury rows; 0 coded fatalities and 375 lost days across the published record.

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

Violations and penalties

76 violation rows across the full record; 5 carry an S&S flag and $9,077 appears in current assessed amounts.

ENFORCEMENT ACTIVITY39 since 2021
inspectionsviolationsassessed-violationsorders-107a
03 / HEALTHwatch

Occupational health samples

23 personal. 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 EXPOSURE23 samples
personal-health-samples
04 / PRODUCTIONcontext

Quarterly production and employment

43K employee hours and 88 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

12 contested-violation rows, 12 civil-penalty docket/decision rows, and 1 conference records linked by issuance number.

POST-ISSUANCE LIFECYCLE25 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 CONTEXT0 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations
07 / INSPECTIONScontext

Inspections

26 inspection events and 630 published inspection hours across the historical record.

OVERSIGHT COVERAGE13 since 2021
inspectionsviolations

HEALTH SAMPLING

Silica and quartz

Matching records00 coal · 0 personal · 0 area
Sample status0 not voided0 voided · 0 status not reported
Personal samples with C/E > 1—0 published ratios · not a citation count
2026 · No reported dates in this selection
Date / sampleDataset / analyteOccupation / areaMeasurementSample statusPublished 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.

RECENT PUBLIC RECORDS

Recent violations and samples

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

VIOLATIONS12 latest shown
517950956.14100(c)Citation
517950856.14100(b)Citation
517950756.13011Citation
517950656.12034Citation
517950556.12004Citation
517950456.13011Citation
517950356.14112(a)(1)S&S
517950256.12004Citation
OTHER HEALTH SAMPLES8 latest shown

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

Unlisted Particulate, total, <1% QtzLab Technician
C/E: 00.00Concentration: 0000.64 · limit: 0000.00Source unit unspecified
Unlisted Particulate, total, <1% QtzBall Mill Operator
C/E: 00.00Concentration: 0003.85 · limit: 0000.00Source unit unspecified
Unlisted Particulate, total, <1% QtzBagging Operator
C/E: 00.00Concentration: 0025.55 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgSupervisor, Co. Official
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Unlisted Particulate, total, <1% QtzBagging Operator
C/E: 00.00Concentration: 0008.67 · limit: 0000.00Source unit unspecified
Unlisted Particulate, total, <1% QtzUtility Man
C/E: 00.00Concentration: 0002.19 · limit: 0000.00Source unit unspecified
Unlisted Particulate, respirable, <1% QtzBuilding Repair/Maint.
C/E: 00.00Concentration: 0000.16 · limit: 0000.00Source unit unspecified
Unlisted Particulate, total, <1% QtzBall Mill Operator
C/E: 00.00Concentration: 0013.78 · limit: 0000.00Source unit unspecified

SOURCE COVERAGE

Reporting dates and coverage

13 datasets contain linked records. Missing datasets are listed below.

DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors10Jan 8, 2018—Jun 29, 2026mine-keyed
Addresses of Recordidentity · logistics1Dec 8, 2017—Dec 8, 2017mine-keyed
Assessed Violationscompliance · legal61Mar 13, 2018—May 27, 2025mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal12Nov 6, 2018—Nov 6, 2018mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal1Jan 26, 2024—Jan 26, 2024mine-keyed
Contested Violationscompliance · legal12Mar 13, 2018—Mar 26, 2018mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety—No published rowsabsent / not applicable
Contractor Employment and Production — Yearlycontractors · production · safety—No published rowsabsent / not applicable
Controller and Operator Historyidentity · compliance2Dec 7, 2017—Dec 7, 2017mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance34Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance9Not published—Not publishedmine-keyed
Inspectionssafety · compliance26Dec 6, 2017—Aug 17, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety—No published rowsabsent / not applicable
Metal and Nonmetal Personal Health Sampleshealth · safety23Jun 12, 2019—Mar 11, 2025mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal76Mar 13, 2018—Aug 19, 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.