MINE DETAILS
Louisville Plant Quarry & Mill
MSHA MINE ID2500002
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Louisville Plant Quarry & Mill41.02056, -96.15944Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-17. MSHA quarterly production and employment reports.
Coal production
—reported short tons
Hours worked
—reported employee hours
Tons per hour
—production ÷ 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 | — | — | — | — | No report |
| 2025 Q2 | — | — | — | — | No report |
| 2025 Q3 | — | — | — | — | No report |
| 2025 Q4 | — | — | — | — | No report |
| 2026 Q1 | — | — | — | — | No report |
| 2026 Q2 | — | — | — | — | No report |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-17
Violations
24536 significant & substantial (S&S)
Accident records
130 records classified as fatality
Proposed penalties · USD
338,977.00242 of 245 violations with amounts
On-site inspection hours
713.5013 inspections · 13 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 | 0 | 0 | — | 1 | 0 | 0 | — |
| 2025-Q2 | 111 | 14 | 68,751.00 | 5 | 0 | 2 | 264.0 |
| 2025-Q3 | 0 | 0 | — | 1 | 0 | 3 | 14.5 |
| 2025-Q4 | 0 | 0 | — | 1 | 0 | 1 | 3.0 |
| 2026-Q1 | 24 | 3 | 24,475.00 | 0 | 0 | 1 | 90.8 |
| 2026-Q2 | 108 | 18 | 245,751.00 | 1 | 0 | 2 | 325.8 |
| 2026-Q3 | 2 | 1 | — | 4 | 0 | 4 | 15.5 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
Compliance Follow-up Inspection · 2.0 on-site hours
HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
Employee reported pain and feeling a pop in the left side of EE's chest when EE was stretched out trying to align a pipe fitting.
56.20003(a) · S&S
Verbal Hazard Complaint Inspections · 5.5 on-site hours
MACHINERY · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
Employee was investigating the preheat tower pressures and dusting when they opened a port and pressure blew hot kiln feed dust into face and eyes resulting in abrasions and thermal burn in both eyes.
Compliance Follow-up Inspection · 0.0 on-site hours
50.20-1
DISORDERS (PHYSICAL AGENTS) · OCCUPATNAL ILLNESS NOT DEG 1-6
Accident narrative
Employee was climbing the stairs on the preheat tower and called over the radio to a co-worker that they needed to rest and felt dizzy. When the co-worker arrived, the employee was lying on the floor unconscious. Employee was brought conscious by a few shakes and hydrated and took to emergency room for check. They was diagnosed with heat syncope.
DISORDERS (PHYSICAL AGENTS) · OCCUPATNAL ILLNESS NOT DEG 1-6
Accident narrative
Employee fainted while working in the blend silos. A co-worker found the employee on the floor. The employee was seen by the co-worker just a few minutes earlier. The employee was diagnosed with heat syncope and administered IV fluids.
Compliance Follow-up Inspection · 8.0 on-site hours
Non-Fatal Accident Investigation · 4.3 on-site hours
HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
While walking down the shop stairs the employee felt and heard a pop in EE's knee causing pain and trouble putting weight on. Employee was prescribed medication for swelling and a knee brace resulting in a reportable injury.
56.14207 · $165.00 proposed
56.14207 · $165.00 proposed
56.5001(a)/56.5005 · S&S · $11,744.00 proposed
56.5001(a)/56.5005 · S&S · $11,744.00 proposed
56.12028 · S&S · $38,016.00 proposed
56.12001 · S&S · $10,005.00 proposed
56.16005 · $288.00 proposed
56.20014 · $193.00 proposed
56.12004 · $642.00 proposed
56.20003(a) · $366.00 proposed
56.12002 · $288.00 proposed
56.4601 · $151.00 proposed
47.54 · $288.00 proposed
Safety sources and definitions
MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-17.
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.
—
CRH PLCcontrolsAsh Grove Cement CompanyoperatesLouisville Plant Quarry & Mill
msha-controller-operator-history · controller/operator co-tenure derived on mine 2500002—
Ash Grove Cement CompanycontrolsAsh Grove Cement CompanyoperatesLouisville Plant Quarry & Mill
msha-controller-operator-history · controller/operator co-tenure derived on mine 2500002Other 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
228 historical accident/injury rows; 0 coded fatalities and 1,530 lost days across the published record.
ACCIDENT + INJURY RECORD32 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
1,535 violation rows across the full record; 273 carry an S&S flag and $981,988 appears in current assessed amounts.
ENFORCEMENT ACTIVITY546 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
245 personal; 8 area. 15 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 EXPOSURE253 samples
personal-health-samplesarea-samples04 / PRODUCTIONcontext
Quarterly production and employment
71K employee hours and 140 summed average employees across reported subunits in the latest published quarter.
2002-Q40 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
408 contested-violation rows, 408 civil-penalty docket/decision rows, and 25 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE841 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 CONTEXT48 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
140 inspection events and 9K published inspection hours across the historical record.
OVERSIGHT COVERAGE42 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 17, 2026. 41 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 |
|---|---|---|---|---|---|
| 000000202601823974 | Metal/nonmetal areaQUARTZ (BULK DUST) | SF ORE PROCESSING | C/E not reportedConcentration: 0000.0000Source unit unspecified | Not reported | NO ACTIONInspection F016E82 |
| 000000202601823400 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Laborer, Bullgang | 7.38× published limitConcentration: 0004.28 · limit: 0000.58Source unit unspecified | Not reported | LAB RESULTS INDICATE EXPOSURE LIMIT EXCEEDEDInspection F016E82 |
| 000000202601823600 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Cleanup Man | 13.51× published limitConcentration: 0007.43 · limit: 0000.55Source unit unspecified | Not reported | LAB RESULTS INDICATE EXPOSURE LIMIT EXCEEDEDInspection F016E82 |
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 56.20003Housekeeping.2 recent rows ↗30 CFR 50.20-1General instructions for completing MSHA Form 7000-1.1 recent row ↗30 CFR 56.14207Parking procedures for unattended equipment.2 recent rows ↗30 CFR 56.5001Exposure limits for airborne contaminants.2 recent rows ↗30 CFR 56.12028Testing grounding systems.1 recent row ↗30 CFR 56.12001Circuit overload protection.1 recent row ↗30 CFR 56.16005Securing gas cylinders.1 recent row ↗30 CFR 56.20014Prohibited areas for food and beverages.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
504279756.20003(a)S&S
998972650.20-1Citation
504276856.14207Citation
504276756.14207Citation
504253156.5001(a)/56.5005S&S
504253056.5001(a)/56.5005S&S
504295856.12028S&S
504252956.12001S&S
Coal dust, noise and other contaminants. Silica records above ↑
Unlisted Particulate, respirable, <1% QtzKiln/Dryer Operator
C/E: 00.00Concentration: 1762.83 · limit: 0000.00Source unit unspecified
Nuisance dust, total, <1% QtzUtility Man
C/E: 00.09Concentration: 0000.87 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzUtility Man
C/E: 00.21Concentration: 0002.10 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzUtility Man
C/E: 00.37Concentration: 0003.70 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzUtility Man
C/E: 00.35Concentration: 0003.52 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzUtility Man
C/E: 00.35Concentration: 0003.54 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzCleanup Man
C/E: 00.49Concentration: 0004.86 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzCleanup Man
C/E: 00.77Concentration: 0007.69 · 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 · contractors228Feb 2, 2000—Sep 10, 2026mine-keyed
Addresses of Recordidentity · logistics1Feb 17, 2015—Feb 17, 2015mine-keyed
Assessed Violationscompliance · legal1,521Mar 1, 2000—May 14, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal408Oct 25, 2006—May 15, 2026mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal25Jun 13, 2000—Mar 11, 2025mine-keyed
Contested Violationscompliance · legal408Mar 15, 2006—May 12, 2026mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety4,711Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety1,055Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance2Jan 1, 1950—Jan 1, 1950mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance36Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance81Not published—Not publishedmine-keyed
Inspectionssafety · compliance140Feb 29, 2000—Sep 21, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety8Aug 21, 2024—May 1, 2026mine-keyed
Metal and Nonmetal Personal Health Sampleshealth · safety245Mar 22, 2001—May 1, 2026mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal1,535Mar 1, 2000—Sep 9, 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.