MSHA DATABASEMSHA records · 15 contributing sources · snapshot Oct 13, 2026

MINE DETAILS

Young Mill

ActiveFacilityZinc
MSHA MINE ID4001981
LOCATIONJefferson, TN
PUBLIC RECORD4,644 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

19

4 significant & substantial (S&S)

  1. 2025 Q14
  2. 2025 Q21
  3. 2025 Q32
  4. 2025 Q43
  5. 2026 Q15
  6. 2026 Q20
  7. 2026 Q34
  8. 2026 Q4 *0

Accident records

2

0 records classified as fatality

  1. 2025 Q12
  2. 2025 Q20
  3. 2025 Q30
  4. 2025 Q40
  5. 2026 Q10
  6. 2026 Q20
  7. 2026 Q30
  8. 2026 Q4 *0

Proposed penalties · USD

9,202.00

17 of 19 violations with amounts

  1. 2025 Q16,101
  2. 2025 Q2151
  3. 2025 Q3302
  4. 2025 Q4453
  5. 2026 Q11,742
  6. 2026 Q2—
  7. 2026 Q3453
  8. 2026 Q4 *—

On-site inspection hours

170.00

8 inspections · 8 with hours

  1. 2025 Q120.75
  2. 2025 Q236.50
  3. 2025 Q3—
  4. 2025 Q466.75
  5. 2026 Q116.75
  6. 2026 Q26.75
  7. 2026 Q322.50
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q1426,101.0020220.8
2025-Q210151.0000136.5
2025-Q320302.00000—
2025-Q430453.0000266.8
2026-Q1521,742.0000116.8
2026-Q200—0016.8
2026-Q340453.0000122.5
2026-Q4 *00—000—

Most cited CFR sections

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

Safety activity

  1. violation9777071

    56.14132(a)

  2. violation9777067

    56.14107(a) · $151.00 proposed

  3. violation9777066

    56.20003(a) · $151.00 proposed

  4. violation9777065

    56.12028 · $151.00 proposed

  5. inspectionF03DA4F

    Regular Safety and Health Inspection · 22.5 on-site hours

  6. inspectionF013A48

    Impoundment Spot Inspection · 6.8 on-site hours

  7. inspectionF013A3B

    Impoundment Spot Inspection · 16.8 on-site hours

  8. violation9777016

    56.15005 · S&S · $592.00 proposed

  9. violation9777015

    56.15005 · S&S · $697.00 proposed

  10. violation9777014

    56.12028 · $151.00 proposed

  11. violation5087428

    56.14132(b)(2) · $151.00 proposed

  12. violation5087427

    56.14132(a) · $151.00 proposed

  13. violation9779887

    56.12004 · $151.00 proposed

  14. violation9779886

    56.12020 · $151.00 proposed

  15. inspectionF0255DF

    Regular Safety and Health Inspection · 51.8 on-site hours

  16. inspectionF007852

    Spot Inspection · 15.0 on-site hours

  17. violation9779885

    56.12002 · $151.00 proposed

  18. violation9774338

    56.12018 · $151.00 proposed

  19. violation9774337

    56.4200(b)(2) · $151.00 proposed

  20. violation9774336

    56.12008 · $151.00 proposed

  21. inspectionF011D4B

    Regular Safety and Health Inspection · 36.5 on-site hours

  22. violation9776790

    46.7(a) · S&S · $3,014.00 proposed

  23. violation9774469

    56.14205 · S&S · $2,936.00 proposed

  24. accident220250840004

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

    Accident narrative

    An operator slipped and fell while exiting the 242D3 skid steer. Employee fell on right side with their right hand taking most of the impact.

  25. inspectionF007152

    Non-Injury Accident Investigation · 18.3 on-site hours

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 HIERARCHYKorea Zinc Co Ltd → Crucible ETN LLC → Young Mill
HISTORY RECORDS718 relationships
INTERVAL CHECKPASScontroller/operator overlap
—

Korea Zinc Co LtdcontrolsCrucible ETN LLCoperatesYoung Mill

msha-controller-operator-history · controller/operator co-tenure derived on mine 4001981
—

Nyrstar Netherlands Holdings B.V.controlsNyrstar Tennessee Mines Strawberry Plains LLCoperatesYoung Mill

msha-controller-operator-history · controller/operator co-tenure derived on mine 4001981
—

Nyrstar US InccontrolsNyrstar Tennessee Mines Strawberry Plains LLCoperatesYoung Mill

msha-controller-operator-history · controller/operator co-tenure derived on mine 4001981
—

Nyrstar NVcontrolsNyrstar Tennessee Mines Strawberry Plains LLCoperatesYoung Mill

msha-controller-operator-history · controller/operator co-tenure derived on mine 4001981
—

Tennessee Zinc Company LLCcontrolsNyrstar Tennessee Mines Strawberry Plains LLCoperatesYoung Mill

msha-controller-operator-history · controller/operator co-tenure derived on mine 4001981
—

Grupo Mexico S A B de C VcontrolsAsarco IncoperatesYoung Mill

msha-controller-operator-history · controller/operator co-tenure derived on mine 4001981
—

Asarco InccontrolsAsarco IncoperatesYoung Mill

msha-controller-operator-history · controller/operator co-tenure derived on mine 4001981
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

43 historical accident/injury rows; 0 coded fatalities and 433 lost days across the published record.

ACCIDENT + INJURY RECORD10 since 2021
accidentsmine-production-quarterly
02 / COMPLIANCEwatch

Violations and penalties

382 violation rows across the full record; 97 carry an S&S flag and $115,581 appears in current assessed amounts.

ENFORCEMENT ACTIVITY49 since 2021
inspectionsviolationsassessed-violationsorders-107a
03 / HEALTHcontext

Occupational health samples

59 personal. 0 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 EXPOSURE59 samples
personal-health-samples
04 / PRODUCTIONcontext

Quarterly production and employment

42K employee hours and 114 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

29 contested-violation rows, 29 civil-penalty docket/decision rows, and 8 conference records linked by issuance number.

POST-ISSUANCE LIFECYCLE66 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 CONTEXT24 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations
07 / INSPECTIONScontext

Inspections

147 inspection events and 4K published inspection hours across the historical record.

OVERSIGHT COVERAGE32 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
977707156.14132(a)Citation
977706756.14107(a)Citation
977706656.20003(a)Citation
977706556.12028Citation
977701656.15005S&S
977701556.15005S&S
977701456.12028Citation
508742856.14132(b)(2)Citation
OTHER HEALTH SAMPLES8 latest shown

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

Nuisance dust, respirable, <1% QtzFront-end Loader Operator
C/E: 00.04Concentration: 0000.36 · limit: 0010.00Source unit unspecified
Nuisance dust, respirable, <1% QtzCrusher Oper/Worker
C/E: 00.01Concentration: 0000.13 · limit: 0010.00Source unit unspecified
Respirable dust, <.1mgFlotation/Concentrator Oper.
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Nuisance dust, respirable, <1% QtzLaborer, Bullgang
C/E: 00.01Concentration: 0000.13 · limit: 0010.00Source unit unspecified
Unlisted Particulate, respirable, <1% QtzFront-end Loader Operator
C/E: 00.00Concentration: 0000.31 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgMechanic
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgMechanic
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Nuisance dust, respirable, <1% QtzCrusher Oper/Worker
C/E: 00.02Concentration: 0000.16 · limit: 0010.00Source unit unspecified

SOURCE COVERAGE

Reporting dates and coverage

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

DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors43May 7, 2000—Mar 20, 2025mine-keyed
Addresses of Recordidentity · logistics1Dec 18, 2009—Dec 18, 2009mine-keyed
Assessed Violationscompliance · legal379Mar 14, 2000—Aug 17, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal29Aug 6, 2010—Jan 28, 2015mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal8Mar 30, 2007—Feb 23, 2017mine-keyed
Contested Violationscompliance · legal29Feb 2, 2009—Jan 27, 2014mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety2,665Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety633Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance7Jan 1, 1950—Apr 21, 2026mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance209Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance52Not published—Not publishedmine-keyed
Inspectionssafety · compliance147Jan 31, 2000—Aug 10, 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 · safety59Aug 3, 2010—Dec 28, 2023mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal382Mar 14, 2000—Aug 26, 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.