MSHA DATABASEMSHA records · 16 contributing sources · snapshot Oct 13, 2026

MINE DETAILS

Maysville Mine

ActiveUndergroundCrushed, Broken Limestone NEC
MSHA MINE ID1507101
LOCATIONMason, KY
PUBLIC RECORD4,575 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

35

7 significant & substantial (S&S)

  1. 2025 Q112
  2. 2025 Q24
  3. 2025 Q32
  4. 2025 Q45
  5. 2026 Q13
  6. 2026 Q27
  7. 2026 Q32
  8. 2026 Q4 *0

Accident records

12

0 records classified as fatality

  1. 2025 Q12
  2. 2025 Q22
  3. 2025 Q31
  4. 2025 Q42
  5. 2026 Q14
  6. 2026 Q20
  7. 2026 Q31
  8. 2026 Q4 *0

Proposed penalties · USD

8,167.00

35 of 35 violations with amounts

  1. 2025 Q13,370
  2. 2025 Q21,713
  3. 2025 Q3302
  4. 2025 Q4970
  5. 2026 Q1453
  6. 2026 Q21,057
  7. 2026 Q3302
  8. 2026 Q4 *—

On-site inspection hours

1,051.25

10 inspections · 10 with hours

  1. 2025 Q1169.00
  2. 2025 Q2158.50
  3. 2025 Q3114.50
  4. 2025 Q4141.00
  5. 2026 Q1150.75
  6. 2026 Q2199.50
  7. 2026 Q3118.00
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q11243,370.00201169.0
2025-Q2421,713.00201158.5
2025-Q320302.00101114.5
2025-Q451970.00201141.0
2026-Q130453.00402150.8
2026-Q2701,057.00002199.5
2026-Q320302.00102118.0
2026-Q4 *00—000—

Most cited CFR sections

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

Safety activity

  1. accident220262590014

    SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY

    Accident narrative

    Employee injured left ankle while clearer brush at the 006-discharge pond. EE states took a step on an incline, slipped and fell followed by pain in ankle. EE also said a popping sound was heard.

  2. inspectionF018C9E

    Verbal Hazard Complaint Inspections · 2.5 on-site hours

  3. violation5088357

    56.20003(a) · $151.00 proposed

  4. violation5088356

    56.20003(a) · $151.00 proposed

  5. inspectionF01A3CE

    Regular Safety and Health Inspection · 115.5 on-site hours

  6. inspectionF00FDF0

    Spot Inspection · 41.5 on-site hours

  7. violation5088323

    56.12032 · $151.00 proposed

  8. violation5088322

    56.14100(b) · $151.00 proposed

  9. violation5088321

    56.12008 · $151.00 proposed

  10. violation5080030

    57.11001 · $151.00 proposed

  11. violation5088320

    57.12008 · $151.00 proposed

  12. violation5088319

    56.14132(b)(2) · $151.00 proposed

  13. violation5088318

    56.14100(b) · $151.00 proposed

  14. inspectionF01A3C1

    Regular Safety and Health Inspection · 158.0 on-site hours

  15. inspectionF00538E

    Non-Injury Accident Investigation · 8.5 on-site hours

  16. accident220260710015

    FIRE · ACCIDENT ONLY

    Accident narrative

    On 3/10/2026 6:30 p.m. management was made aware that the surface trash compactor storage container had material inside on fire. This metal container measures eight feet by 22 feet and is used to transport trash from the mine property to an offsite dump. MSHA was notified and the fire was extinguished. There was no damage to property or injury due to this incident.

  17. accident220260680018

    HOISTING · ACCIDENT ONLY

    Accident narrative

    On 3/6/2026 3:20 a.m. management was made aware power had been lost to the slope hoist. This being the secondary escapeway, all mine personnel were evacuated using the primary escapeway. MSHA was notified when power restored at 4:02 a.m. No miners were injured due to this incident.

  18. accident220260480010

    SLIP OR FALL OF PERSON · DYS AWY FRM WRK & RESTRCTD ACT

    Accident narrative

    The EE walked to a roadside berm that had 2 feet wide opening to allow water to exit the roadway into a ditch. While standing at this opening, the ice underneath EE broke, causing EE to lose EE's balance. EE then slid down the ditch wall 4 feet before EE's left foot contacted a tree branch. This contact resulted in a dislocated and fractured ankle.

  19. accident220260620012

    HANDTOOLS (NONPOWERED) · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    On 2/4/2026 an employee was using a spud bar to clean material from a clogged chute at the surface crusher when EE injured EE's right pinky finger. EE refused treatment at time of incident, but after seeing a doctor on 2/26 & 2/27 it was determined EE's finger had been fractured.

  20. violation9778398

    57.4603(b) · $151.00 proposed

  21. violation9778351

    56.20003(a) · $151.00 proposed

  22. violation9778397

    57.15001 · $151.00 proposed

  23. inspectionF005386

    Regular Safety and Health Inspection · 142.3 on-site hours

  24. accident220253530012

    HOISTING · ACCIDENT ONLY

    Accident narrative

    On 12/18/2025 the vertical shaft hoist (primary escapeway) was taken out of service due to not being able to close the surface landing door. No miners were in the mine when this issue was found. It was determined a bolt on the landing door track needed replaced.

  25. accident220253360024

    HOISTING · ACCIDENT ONLY

    Accident narrative

    On 12/1/2025 MSHA was notified that the vertical shaft hoist was being taken out of service due to intermittent issues. The brake alarm was resolved after adjustment per manufacturer specification. There was also a problem with a control wire, which was changed out with a spare. No miners were injured due to this incident.

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 HIERARCHYCarmeuse Holding SA → Carmeuse Lime and Stone Inc → Maysville Mine
HISTORY RECORDS613 relationships
INTERVAL CHECKPASScontroller/operator overlap
—

Carmeuse Holding SAcontrolsCarmeuse Lime and Stone IncoperatesMaysville Mine

msha-controller-operator-history · controller/operator co-tenure derived on mine 1507101
—

Carmeuse Holding SAcontrolsCarmeuse Lime and Stone IncoperatesMaysville Mine

msha-controller-operator-history · controller/operator co-tenure derived on mine 1507101
—

Lafarge SAcontrolsCarmeuse Lime and Stone IncoperatesMaysville Mine

msha-controller-operator-history · controller/operator co-tenure derived on mine 1507101
—

Carmeuse Holding SAcontrolsDravo Lime IncoperatesMaysville Mine

msha-controller-operator-history · controller/operator co-tenure derived on mine 1507101
—

Lafarge SAcontrolsDravo Lime IncoperatesMaysville Mine

msha-controller-operator-history · controller/operator co-tenure derived on mine 1507101
—

Dravo CorpcontrolsDravo Lime CompanyoperatesMaysville Mine

msha-controller-operator-history · controller/operator co-tenure derived on mine 1507101
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

156 historical accident/injury rows; 0 coded fatalities and 850 lost days across the published record.

ACCIDENT + INJURY RECORD45 since 2021
accidentsmine-production-quarterly
02 / COMPLIANCEwatch

Violations and penalties

860 violation rows across the full record; 214 carry an S&S flag and $274,253 appears in current assessed amounts.

ENFORCEMENT ACTIVITY197 since 2021
inspectionsviolationsassessed-violationsorders-107a
03 / HEALTHwatch

Occupational health samples

491 personal; 19 area. 8 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 EXPOSURE510 samples
personal-health-samplesarea-samples
04 / PRODUCTIONcontext

Quarterly production and employment

62K employee hours and 116 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

10 contested-violation rows, 10 civil-penalty docket/decision rows, and 12 conference records linked by issuance number.

POST-ISSUANCE LIFECYCLE32 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 CONTEXT11 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations
07 / INSPECTIONScontext

Inspections

202 inspection events and 12K published inspection hours across the historical record.

OVERSIGHT COVERAGE32 since 2021
inspectionsviolations

HEALTH SAMPLING

Silica and quartz

Matching records70 coal · 7 personal · 0 area
Sample status0 not voided0 voided · 7 status not reported
Personal samples with C/E > 107 published ratios · not a citation count
2026 · Jan 29, 2026–Jun 17, 2026
Date / sampleDataset / analyteOccupation / areaMeasurementSample statusPublished action
000000202602512600Metal/nonmetal personalQuartz, respirable, >1% QtzUtility Man0× published limitConcentration: 0000.19 · limit: 0000.00Source unit unspecifiedNot reportedNO ACTIONInspection F00FDF0
000000202602381500Metal/nonmetal personalQuartz, respirable, >1% QtzScaling (mechanical)0× published limitConcentration: 0000.41 · limit: 0000.00Source unit unspecifiedNot reportedNO ACTIONInspection F00FDF0
000000202601939600Metal/nonmetal personalQuartz, respirable, >1% QtzBlaster, Powder Gang0× published limitConcentration: 0000.76 · limit: 0000.00Source unit unspecifiedNot reportedNO ACTIONInspection F01A3C1
000000202601939700Metal/nonmetal personalQuartz, respirable, >1% QtzTruck Driver0× published limitConcentration: 0000.15 · limit: 0000.00Source unit unspecifiedNot reportedNO ACTIONInspection F01A3C1
000000202600359000Metal/nonmetal personalQuartz, respirable, >1% QtzRoof Bolter, Rock0× published limitConcentration: 0000.21 · limit: 0000.00Source unit unspecifiedNot reportedNO ACTIONInspection F005386
000000202600359100Metal/nonmetal personalQuartz, respirable, >1% QtzBlaster, Powder Gang0× published limitConcentration: 0000.22 · limit: 0000.00Source unit unspecifiedNot reportedNO ACTIONInspection F005386
000000202600359200Metal/nonmetal personalQuartz, respirable, >1% QtzFront-end Loader Operator0× published limitConcentration: 0000.39 · limit: 0000.00Source unit unspecifiedNot reportedNO ACTIONInspection F005386
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
508835756.20003(a)Citation
508835656.20003(a)Citation
508832356.12032Citation
508832256.14100(b)Citation
508832156.12008Citation
508003057.11001Citation
508832057.12008Citation
508831956.14132(b)(2)Citation
OTHER HEALTH SAMPLES8 latest shown

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

Respirable dust, <.1mgSkip Dumper, Toploader, Tipple 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, <.1mgKiln/Dryer Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgRoof Bolter, Mounted
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgDrill Operator, Rotary
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Nuisance dust, respirable, <1% QtzBlaster, Powder Gang
C/E: 01.03Concentration: 0010.34 · limit: 0010.00Source unit unspecified
TC from EC @ 160Scaling (mechanical)
C/E: 00.00Concentration: 0000.00 · limit: 0160.00Source unit unspecified
TC @ 160Scaling (mechanical)
C/E: 00.00Concentration: 0000.00 · 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 · contractors156Feb 5, 2000—Sep 14, 2026mine-keyed
Addresses of Recordidentity · logistics1Mar 5, 1979—Mar 5, 1979mine-keyed
Assessed Violationscompliance · legal850Jan 25, 2000—Aug 4, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal10Mar 25, 2010—Mar 21, 2017mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal12Feb 26, 2004—Mar 31, 2016mine-keyed
Contested Violationscompliance · legal10Feb 10, 2009—May 2, 2013mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety1,243Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety275Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance6Jan 1, 1950—Jun 20, 2002mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance349Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance90Not published—Not publishedmine-keyed
Inspectionssafety · compliance202Jan 24, 2000—Sep 1, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety19Dec 11, 2008—Jun 9, 2026mine-keyed
Metal and Nonmetal Personal Health Sampleshealth · safety491Feb 4, 2003—Jun 17, 2026mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal860Jan 25, 2000—Aug 4, 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.