MINE DETAILS
Mitchell Plant
MSHA MINE ID1200063
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Mitchell Plant38.74333, -86.45611Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-18. MSHA quarterly production and employment reports.
Coal production
0reported short tons
Hours worked
599,503reported 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 | 104,951 | 0.00 | 177 | 1/1 mines reporting |
| 2025 Q2 | 0 | 97,135 | 0.00 | 176 | 1/1 mines reporting |
| 2025 Q3 | 0 | 95,082 | 0.00 | 166 | 1/1 mines reporting |
| 2025 Q4 | 0 | 89,877 | 0.00 | 166 | 1/1 mines reporting |
| 2026 Q1 | 0 | 104,629 | 0.00 | 178 | 1/1 mines reporting |
| 2026 Q2 | 0 | 107,829 | 0.00 | 185 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-18
Violations
418 significant & substantial (S&S)
Accident records
70 records classified as fatality
Proposed penalties · USD
46,896.0040 of 41 violations with amounts
On-site inspection hours
362.7524 inspections · 24 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 | 8 | 0 | 1,236.00 | 2 | 0 | 1 | 16.3 |
| 2025-Q2 | 4 | 0 | 1,180.00 | 0 | 0 | 2 | 96.0 |
| 2025-Q3 | 7 | 0 | 2,301.00 | 0 | 0 | 2 | 12.0 |
| 2025-Q4 | 6 | 1 | 10,810.00 | 1 | 0 | 5 | 93.5 |
| 2026-Q1 | 0 | 0 | — | 1 | 0 | 2 | 7.5 |
| 2026-Q2 | 9 | 3 | 12,955.00 | 3 | 0 | 5 | 98.8 |
| 2026-Q3 | 7 | 4 | 18,414.00 | 0 | 0 | 7 | 38.8 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
56.9101 · S&S · $209.00 proposed
56.9315 · $592.00 proposed
56.20003(b) · $267.00 proposed
56.9101 · S&S · $1,320.00 proposed
Regular Safety and Health Inspection · 85.3 on-site hours
POWERED HAULAGE · DAYS AWAY FROM WORK ONLY
Accident narrative
UNDER THE SILOS IS A TIGHT SPACE. WAS USING A WALK BEHIND SKID STEER. MOBILITY WAS LIMITED, OPERATOR WAS GOING IN REVERSE WITH A LIMITED FIELD OF VIEW
ENTRAPMENT · ACCIDENT ONLY
Accident narrative
Elevator was in the process of being test ran after previous repairs, during test run, elevator and one miner was stopped at the top landing unable to exit or move. Repairman was onsite and able to open the elevator and move to ground level. Miner was in the elevator for 33 minutes.
Verbal Hazard Complaint Inspections · 2.5 on-site hours
103 (g) Written Notification Hazard Complaint Inspectio · 5.0 on-site hours
56.14132(a) · $165.00 proposed
56.14107(a) · S&S · $1,320.00 proposed
56.14107(a) · $592.00 proposed
56.14100(b) · $7,676.00 proposed
103 (g) Written Notification Hazard Complaint Inspectio · 7.0 on-site hours
56.11016 · $592.00 proposed
POWERED HAULAGE · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
An employee was a passenger inside of a fellow employee's personal vehicle that was involved in an incident on the quarry road headed to return to work from their break. Employee initially declined medical treatment but, on the 12th, requested to been seen by medical professionals. Employee was diagnosed with a mild concussion and was given restrictions.
Verbal Hazard Complaint Inspections · 5.5 on-site hours
56.9315 · $465.00 proposed
Verbal Hazard Complaint Inspections · 1.5 on-site hours
Regular Safety and Health Inspection · 77.3 on-site hours
103 (g) Written Notification Hazard Complaint Inspectio · 2.3 on-site hours
Spot Inspection · 9.0 on-site hours
56.5001(a)/56.5005 · $366.00 proposed
56.14100(c) · $151.00 proposed
56.14100(b) · $504.00 proposed
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.
—
Heidelberg Materials AGcontrolsHeidelberg Materials US Cement LLCoperatesMitchell Plant
msha-controller-operator-history · controller/operator co-tenure derived on mine 1200063—
Heidelberg Materials AGcontrolsLehigh Portland Cement CompanyoperatesMitchell Plant
msha-controller-operator-history · controller/operator co-tenure derived on mine 1200063Other 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
229 historical accident/injury rows; 0 coded fatalities and 1,488 lost days across the published record.
ACCIDENT + INJURY RECORD46 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
1,582 violation rows across the full record; 324 carry an S&S flag and $1,251,319 appears in current assessed amounts.
ENFORCEMENT ACTIVITY533 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
127 personal; 52 area. 29 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 EXPOSURE179 samples
personal-health-samplesarea-samples04 / PRODUCTIONcontext
Quarterly production and employment
108K employee hours and 185 summed average employees across reported subunits in the latest published quarter.
2026-Q20 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
445 contested-violation rows, 447 civil-penalty docket/decision rows, and 60 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE952 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 CONTEXT54 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
225 inspection events and 10K published inspection hours across the historical record.
OVERSIGHT COVERAGE82 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 18, 2026. 15 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 56.9101Operating speeds and control of equipment.1 recent row ↗30 CFR 46.9Records of training.1 recent row ↗30 CFR 56.9313Roadway maintenance.1 recent row ↗30 CFR 56.9301Dump site restraints.1 recent row ↗30 CFR 56.14107Moving machine parts.3 recent rows ↗30 CFR 56.20003Housekeeping.4 recent rows ↗30 CFR 56.9315Dust control.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
501446956.9101S&S
978074946.9(a)Citation
978100056.9313Citation
978074156.9301Citation
978074256.14107(a)S&S
978074056.20003(a)S&S
978073956.9315S&S
978584556.20003(b)Citation
Coal dust, noise and other contaminants. Silica records above ↑
Nuisance dust, total, <1% QtzUtility Man
C/E: 00.31Concentration: 0003.07 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzRoad Grader Operator
C/E: 00.02Concentration: 0000.17 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzTruck Driver
C/E: 00.00Concentration: 0000.00 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzUtility Man
C/E: 02.39Concentration: 0023.86 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzBagging Operator
C/E: 00.29Concentration: 0002.90 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzFront-end Loader Operator
C/E: 00.02Concentration: 0000.24 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzUtility Man
C/E: 00.58Concentration: 0005.76 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzCrusher Oper/Worker
C/E: 00.07Concentration: 0000.68 · 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 · contractors229Jan 15, 2000—Jun 2, 2026mine-keyed
Addresses of Recordidentity · logistics1Feb 7, 1979—Feb 7, 1979mine-keyed
Assessed Violationscompliance · legal1,573Jan 13, 2000—Aug 24, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal447Aug 7, 2012—Jun 18, 2026mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal60Feb 22, 2000—May 29, 2024mine-keyed
Contested Violationscompliance · legal445Sep 28, 2011—Jul 16, 2026mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety7,087Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety1,551Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance2Jan 1, 1950—Feb 2, 2002mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance318Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance81Not published—Not publishedmine-keyed
Inspectionssafety · compliance225Jan 13, 2000—Sep 21, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety52Aug 29, 2022—Sep 11, 2025mine-keyed
Metal and Nonmetal Personal Health Sampleshealth · safety127Sep 12, 2001—Sep 11, 2025mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal1,582Jan 13, 2000—Sep 21, 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.