MINE DETAILS
Coy Mine
MSHA MINE ID4000166
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Coy Mine36.12139, -83.20944Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-13. MSHA quarterly production and employment reports.
Coal production
0reported short tons
Hours worked
318,168reported employee hours
Tons per hour
0.00production ÷ hours worked
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
| Quarter | Coal (short tons) | Hours worked | Tons / hour | Avg. employees | Coverage |
|---|---|---|---|---|---|
| 2025 Q1 | 0 | 61,880 | 0.00 | 131 | 1/1 mines reporting |
| 2025 Q2 | 0 | 47,926 | 0.00 | 128 | 1/1 mines reporting |
| 2025 Q3 | 0 | 47,180 | 0.00 | 131 | 1/1 mines reporting |
| 2025 Q4 | 0 | 46,666 | 0.00 | 130 | 1/1 mines reporting |
| 2026 Q1 | 0 | 53,767 | 0.00 | 131 | 1/1 mines reporting |
| 2026 Q2 | 0 | 60,749 | 0.00 | 139 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
648 significant & substantial (S&S)
Accident records
60 records classified as fatality
Proposed penalties · USD
12,136.0058 of 64 violations with amounts
On-site inspection hours
649.5028 inspections · 28 with hours
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
| Quarter | Violations | S&S | Proposed USD | Accident records | Fatality records | Inspections | On-site hours |
|---|---|---|---|---|---|---|---|
| 2025-Q1 | 7 | 1 | 1,714.00 | 0 | 0 | 6 | 114.8 |
| 2025-Q2 | 4 | 1 | 1,150.00 | 0 | 0 | 3 | 91.0 |
| 2025-Q3 | 12 | 2 | 2,264.00 | 2 | 0 | 5 | 94.5 |
| 2025-Q4 | 14 | 1 | 2,374.00 | 2 | 0 | 3 | 98.8 |
| 2026-Q1 | 12 | 2 | 2,555.00 | 2 | 0 | 5 | 87.0 |
| 2026-Q2 | 5 | 0 | 755.00 | 0 | 0 | 2 | 54.5 |
| 2026-Q3 | 10 | 1 | 1,324.00 | 0 | 0 | 4 | 109.0 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
Spot Inspection · 15.8 on-site hours
57.5066(a) · $151.00 proposed
57.5066(a) · $151.00 proposed
57.11001 · S&S · $267.00 proposed
57.5066(a) · $151.00 proposed
57.12030 · $151.00 proposed
57.12028 · $151.00 proposed
Non-Injury Accident Investigation · 11.5 on-site hours
Description not reported
57.12032 · $151.00 proposed
Non-Injury Accident Investigation · 8.3 on-site hours
Description not reported
57.14100(b) · $151.00 proposed
Regular Safety and Health Inspection · 73.5 on-site hours
57.12003 · $151.00 proposed
57.14132(a) · $151.00 proposed
57.14100(b) · $151.00 proposed
57.12018 · $151.00 proposed
57.16005 · $151.00 proposed
Regular Safety and Health Inspection · 52.3 on-site hours
Spot Inspection · 2.3 on-site hours
Spot Inspection · 14.8 on-site hours
57.5060(b)(3) · S&S · $592.00 proposed
56.19106 · $151.00 proposed
57.19083 · $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.
—
Korea Zinc Co LtdcontrolsCrucible ETN LLCoperatesCoy Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4000166—
Nyrstar Netherlands Holdings B.V.controlsNyrstar Tennessee Mines, Strawberry Plains LLCoperatesCoy Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4000166—
Nyrstar US InccontrolsNyrstar Tennessee Mines, Strawberry Plains LLCoperatesCoy Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4000166—
Nyrstar NVcontrolsNyrstar Tennessee Mines, Strawberry Plains LLCoperatesCoy Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4000166—
Tennessee Zinc Company LLCcontrolsNyrstar Tennessee Mines, Strawberry Plains LLCoperatesCoy Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4000166—
Grupo Mexico S A B de C VcontrolsAsarco IncoperatesCoy Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4000166—
Asarco InccontrolsAsarco IncoperatesCoy Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4000166Other 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
102 historical accident/injury rows; 0 coded fatalities and 1,173 lost days across the published record.
ACCIDENT + INJURY RECORD28 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
583 violation rows across the full record; 150 carry an S&S flag and $229,313 appears in current assessed amounts.
ENFORCEMENT ACTIVITY203 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
489 personal; 101 area. 86 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 EXPOSURE590 samples
personal-health-samplesarea-samples04 / PRODUCTIONcontext
Quarterly production and employment
61K employee hours and 139 summed average employees across reported subunits in the latest published quarter.
2026-Q20 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
19 contested-violation rows, 21 civil-penalty docket/decision rows, and 18 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE58 linked rows
conferencescontested-violationscivil-penalty-dockets-decisions06 / 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 CONTEXT5 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
251 inspection events and 10K published inspection hours across the historical record.
OVERSIGHT COVERAGE68 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 2026. 9 silica records across the mine’s published history.
Personal silica samples · concentration / limit
Quarterly mean · published C/E ratio
— 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.
| Date / sample | Dataset / analyte | Occupation / area | Measurement | Sample status | Published 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.
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.
30 CFR 57.5066Maintenance standards.3 recent rows ↗30 CFR 57.11001Safe access.1 recent row ↗30 CFR 57.12030Correction of dangerous conditions.1 recent row ↗30 CFR 57.12028Testing grounding systems.1 recent row ↗30 CFR 57.12032Inspection and cover plates.1 recent row ↗30 CFR 57.14100Safety defects; examination, correction and records.1 recent row ↗30 CFR 57.12003Trailing cable overload protection.1 recent row ↗30 CFR 57.14132Horns and backup alarms for surface equipment.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
508961557.5066(a)Citation
508961457.5066(a)Citation
508961357.11001S&S
508961257.5066(a)Citation
508726257.12030Citation
508726157.12028Citation
9777053—Order
508062257.12032Citation
Coal dust, noise and other contaminants. Silica records above ↑
ORGANIC CARBONTruck Driver
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
ORGANIC CARBONFront-end Loader Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
TC @ 160Truck Driver
C/E: 00.43Concentration: 0069.00 · limit: 0160.00Source unit unspecified
TC @ 160Front-end Loader Operator
C/E: 00.86Concentration: 0138.00 · limit: 0160.00Source unit unspecified
TC from EC @ 160Drill Operator, Jumbo Perc.
C/E: 00.00Concentration: 0000.00 · limit: 0160.00Source unit unspecified
TC @ 160Drill Operator, Jumbo Perc.
C/E: 00.65Concentration: 0104.00 · limit: 0160.00Source unit unspecified
EC @ 160Drill Operator, Jumbo Perc.
C/E: 00.34Concentration: 0055.00 · limit: 0160.00Source unit unspecified
TC from EC @ 160Truck Driver
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 · contractors102Mar 9, 2000—Feb 12, 2026mine-keyed
Addresses of Recordidentity · logistics1Jan 19, 2007—Jan 19, 2007mine-keyed
Assessed Violationscompliance · legal559Jan 27, 2000—Sep 1, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal21Jul 18, 2000—Jun 8, 2021mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal18Feb 28, 2000—Apr 1, 2025mine-keyed
Contested Violationscompliance · legal19Oct 15, 2007—Nov 21, 2019mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety1,071Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety258Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance7Jan 1, 1950—Apr 21, 2026mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance265Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance65Not published—Not publishedmine-keyed
Inspectionssafety · compliance251Jan 27, 2000—Sep 1, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety101Mar 7, 2011—Sep 1, 2026mine-keyed
Metal and Nonmetal Personal Health Sampleshealth · safety489Aug 31, 2000—Sep 1, 2026mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal583Jan 27, 2000—Sep 1, 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.