MSHA DATABASEMSHA records · 16 contributing sources · snapshot Oct 18, 2026

MINE DETAILS

Michel Mine

ActiveUndergroundCrushed, Broken Limestone NEC
MSHA MINE ID4100055
LOCATIONBurnet, TX
PUBLIC RECORD3,781 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 – 2026-10-18Applies to production, safety and portfolio metrics. Silica samples have separate filters.

Violations

53

10 significant & substantial (S&S)

  1. 2025 Q18
  2. 2025 Q28
  3. 2025 Q36
  4. 2025 Q416
  5. 2026 Q18
  6. 2026 Q25
  7. 2026 Q32
  8. 2026 Q4 *0

Accident records

9

0 records classified as fatality

  1. 2025 Q11
  2. 2025 Q22
  3. 2025 Q31
  4. 2025 Q41
  5. 2026 Q11
  6. 2026 Q22
  7. 2026 Q31
  8. 2026 Q4 *0

Proposed penalties · USD

26,170.00

51 of 53 violations with amounts

  1. 2025 Q12,698
  2. 2025 Q21,324
  3. 2025 Q31,022
  4. 2025 Q413,317
  5. 2026 Q17,028
  6. 2026 Q2781
  7. 2026 Q3—
  8. 2026 Q4 *—

On-site inspection hours

352.75

8 inspections · 8 with hours

  1. 2025 Q138.75
  2. 2025 Q240.00
  3. 2025 Q338.75
  4. 2025 Q464.25
  5. 2026 Q147.00
  6. 2026 Q283.50
  7. 2026 Q340.50
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q1822,698.0010138.8
2025-Q2801,324.0020140.0
2025-Q3601,022.0010138.8
2025-Q416613,317.0010164.3
2026-Q1827,028.0010147.0
2026-Q250781.0020283.5
2026-Q320—10140.5
2026-Q4 *00—000—

Most cited CFR sections

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

Safety activity

  1. violation5008910

    57.14100(c) · $193.00 proposed

  2. violation5007537

    57.14107(a) · S&S · $1,431.00 proposed

  3. violation5007536

    57.14101(a)(2) · $642.00 proposed

  4. violation5007535

    57.14100(c) · $193.00 proposed

  5. violation5005738

    57.11053(a) · $642.00 proposed

  6. violation5008908

    57.14107(a) · S&S · $1,818.00 proposed

  7. violation5008907

    57.14112 · S&S · $1,818.00 proposed

  8. violation5008906

    57.12006 · $245.00 proposed

  9. violation5007534

    47.41(a) · $245.00 proposed

  10. violation5007533

    57.14100(c) · $818.00 proposed

  11. violation5007532

    57.14107(a) · $366.00 proposed

  12. violation5007531

    57.14107(a) · S&S · $1,818.00 proposed

  13. violation5005737

    57.14206(b) · $245.00 proposed

  14. violation5005736

    57.20003(a) · S&S · $1,219.00 proposed

  15. inspectionF01BD9F

    Regular Safety and Health Inspection · 64.3 on-site hours

  16. accident220253210008

    SLIP OR FALL OF PERSON · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    Employee step down from front end loader and rolled ankle.

  17. accident220252580023

    HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY

    Accident narrative

    While conducting an end-of-month inventory of explosives supplies, Miner unlocked the powder magazine in Tunnel 1. Miner opened the door using their left arm to pull the heavy steel door open. As they opened the door they felt a pop, and a sharp pain in their left forearm. MRI results received on 9/9/2025 showing injury was a tear requiring surgery.

  18. violation5004892

    57.14107(b) · $151.00 proposed

  19. violation5004891

    57.11005 · $151.00 proposed

  20. violation5004890

    57.14132(a) · $151.00 proposed

  21. violation5003173

    57.12019 · $209.00 proposed

  22. violation5003172

    57.12018 · $151.00 proposed

  23. violation5003171

    57.14132(a) · $209.00 proposed

  24. inspectionF017F5E

    Regular Safety and Health Inspection · 38.8 on-site hours

  25. accident220251810015

    HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    While removing tires from a dump truck to perform maintenance, the miner felt a pop in EE's left shoulder and a slight tingling in EE's arm. Injury occurred on 05/12/25 and treated as first aid until 06/20/25. On 06/20/25 it was diagnosed as a tear requiring surgery and miner was given restrictions.

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.

CURRENT HIERARCHYJ M Huber Corp → Huber Carbonates, LLC → Michel Mine
HISTORY RECORDS26 relationships
INTERVAL CHECKPASScontroller/operator overlap
—

J M Huber CorpcontrolsHuber Carbonates, LLCoperatesMichel Mine

msha-controller-operator-history · controller/operator co-tenure derived on mine 4100055
—

J M Huber CorpcontrolsHuber Carbonates, LLCoperatesMichel Mine

msha-controller-operator-history · controller/operator co-tenure derived on mine 4100055
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

45 historical accident/injury rows; 0 coded fatalities and 1,320 lost days across the published record.

ACCIDENT + INJURY RECORD22 since 2021
accidentsmine-production-quarterly
02 / COMPLIANCEwatch

Violations and penalties

572 violation rows across the full record; 88 carry an S&S flag and $179,797 appears in current assessed amounts.

ENFORCEMENT ACTIVITY258 since 2021
inspectionsviolationsassessed-violationsorders-107a
03 / HEALTHwatch

Occupational health samples

144 personal; 2 area. 4 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 EXPOSURE146 samples
personal-health-samplesarea-samples
04 / PRODUCTIONcontext

Quarterly production and employment

33K employee hours and 55 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

48 contested-violation rows, 48 civil-penalty docket/decision rows, and 48 conference records linked by issuance number.

POST-ISSUANCE LIFECYCLE144 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 CONTEXT8 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations
07 / INSPECTIONScontext

Inspections

146 inspection events and 5K published inspection hours across the historical record.

OVERSIGHT COVERAGE32 since 2021
inspectionsviolations

HEALTH SAMPLING

Silica and quartz

Matching records30 coal · 3 personal · 0 area
Sample status0 not voided0 voided · 3 status not reported
Personal samples with C/E > 103 published ratios · not a citation count
2026 · Apr 21, 2026–Apr 21, 2026
Date / sampleDataset / analyteOccupation / areaMeasurementSample statusPublished action
000000202601658500Metal/nonmetal personalQuartz, respirable, >1% QtzComplete Load-Haul-Dump0× published limitConcentration: 0000.35 · limit: 0000.00Source unit unspecifiedNot reportedNO ACTIONInspection F037A10
000000202601658700Metal/nonmetal personalQuartz, respirable, >1% QtzBagging Operator0× published limitConcentration: 0000.17 · limit: 0000.00Source unit unspecifiedNot reportedNO ACTIONInspection F037A10
000000202601658800Metal/nonmetal personalQuartz, respirable, >1% QtzBuilding Repair/Maint.0.25× published limitConcentration: 0000.34 · limit: 0001.35Source unit unspecifiedNot reportedNO ACTIONInspection F037A10
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
517829357.14100(b)Citation
517491057.4201(a)(2)Citation
517687457.14211(c)Citation
979839057.20003(a)Citation
517687357.14112(b)Citation
500871357.12030Citation
500871257.14207Citation
500865657.12028Citation
OTHER HEALTH SAMPLES6 latest shown

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

Respirable dust, <.1mgCrusher Oper/Worker
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
TC @ 160Scaling (mechanical)
C/E: 00.00Concentration: 0000.00 · limit: 0160.00Source unit unspecified
Nuisance dust, total, <1% QtzScaling (mechanical)
C/E: 00.00Concentration: 0000.00 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzBlaster, Powder Gang
C/E: 00.00Concentration: 0000.00 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzBlaster, Powder Gang
C/E: 00.01Concentration: 0000.13 · limit: 0010.00Source unit unspecified
Nuisance dust, respirable, <1% QtzPackaging Operations Worker
C/E: 00.02Concentration: 0000.16 · limit: 0010.00Source unit unspecified

SOURCE COVERAGE

Reporting dates and coverage

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

DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors45Jun 16, 2000—Aug 17, 2026mine-keyed
Addresses of Recordidentity · logistics1Nov 13, 1973—Nov 13, 1973mine-keyed
Assessed Violationscompliance · legal570Aug 15, 2000—Apr 21, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal48Sep 16, 2013—May 1, 2025mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal48May 6, 2006—Jun 23, 2026mine-keyed
Contested Violationscompliance · legal48Feb 5, 2013—Aug 23, 2023mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety1,365Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety325Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance2Jan 1, 1977—Jan 1, 2015mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance369Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance95Not published—Not publishedmine-keyed
Inspectionssafety · compliance146Feb 29, 2000—Sep 14, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety2Aug 3, 2023—Aug 3, 2023mine-keyed
Metal and Nonmetal Personal Health Sampleshealth · safety144Jan 9, 2003—Apr 21, 2026mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal572Aug 15, 2000—Sep 15, 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.