MINE DETAILS
Ash Grove Cement Company
MSHA MINE ID4100026
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Ash Grove Cement Company32.52611, -97.02972Open 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
355,345reported 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 | 50,331 | 0.00 | 125 | 1/1 mines reporting |
| 2025 Q2 | 0 | 49,219 | 0.00 | 132 | 1/1 mines reporting |
| 2025 Q3 | 0 | 66,635 | 0.00 | 134 | 1/1 mines reporting |
| 2025 Q4 | 0 | 69,164 | 0.00 | 135 | 1/1 mines reporting |
| 2026 Q1 | 0 | 54,706 | 0.00 | 133 | 1/1 mines reporting |
| 2026 Q2 | 0 | 65,290 | 0.00 | 133 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
10111 significant & substantial (S&S)
Accident records
90 records classified as fatality
Proposed penalties · USD
103,195.00100 of 101 violations with amounts
On-site inspection hours
259.7514 inspections · 14 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 | 1,949.00 | 0 | 0 | 1 | 0.0 |
| 2025-Q2 | 0 | 0 | — | 2 | 0 | 1 | 1.5 |
| 2025-Q3 | 21 | 0 | 8,166.00 | 2 | 0 | 5 | 88.5 |
| 2025-Q4 | 40 | 7 | 75,429.00 | 0 | 0 | 2 | 72.8 |
| 2026-Q1 | 1 | 0 | 348.00 | 2 | 0 | 2 | 4.0 |
| 2026-Q2 | 31 | 3 | 17,303.00 | 0 | 0 | 1 | 77.5 |
| 2026-Q3 | 1 | 0 | — | 3 | 0 | 2 | 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
MACHINERY · DAYS AWAY FROM WORK ONLY
Accident narrative
Maintenance employee utiltized a 10' ladder to access the inspection door on the kiln dust rotary feeder, 2nd mechanic was on the ground level working on getting coworker an air hose (unclear why), when air hose was removed gate opened and closed, causing hot dust to release into the employees face causing them to fall from the ladder. The employee fell approximately 11'
Verbal Hazard Complaint Inspections · 12.5 on-site hours
56.20003(a)
Verbal Hazard Complaint Inspections · 3.0 on-site hours
POWERED HAULAGE · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
Employee was moving scaffold racks with a sky track forklift when EE drove through a pile of CKD dust and it blew into EE's eyes. EE was wearing safety glasses at the time.
HOISTING · ACCIDENT ONLY
Accident narrative
Contractor was using the clinker silo passenger elevator when it stopped in the middle of going to the top. They immediately called the Control Room to let them know, and an electrician was called to assist. After 35 minutes the car was lowered to the ground and the contractor was able to get out safely.
56.14107(a) · S&S · $2,312.00 proposed
56.12018 · $313.00 proposed
46.7(a) · $168.00 proposed
56.4201(a)(1) · $1,037.00 proposed
56.20003(c) · S&S · $1,550.00 proposed
56.23002(b) · $151.00 proposed
56.14112(a)(1) · $755.00 proposed
56.12004 · $504.00 proposed
56.12004 · $504.00 proposed
56.12030 · $504.00 proposed
56.12028 · $1,431.00 proposed
56.20003(a) · S&S · $432.00 proposed
56.14100(c) · $504.00 proposed
56.23002(a) · $151.00 proposed
56.12028 · $1,431.00 proposed
Regular Safety and Health Inspection · 77.5 on-site hours
56.12032 · $642.00 proposed
56.12006 · $151.00 proposed
56.14205 · $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.
—
CRH PLCcontrolsAsh Grove Cement CompanyoperatesAsh Grove Cement Company
msha-controller-operator-history · controller/operator co-tenure derived on mine 4100026—
Ash Grove Cement CompanycontrolsAsh Grove Cement CompanyoperatesAsh Grove Cement Company
msha-controller-operator-history · controller/operator co-tenure derived on mine 4100026Other 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; 2 coded fatalities and 1,734 lost days across the published record.
ACCIDENT + INJURY RECORD20 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
600 violation rows across the full record; 116 carry an S&S flag and $412,738 appears in current assessed amounts.
ENFORCEMENT ACTIVITY216 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
27 personal; 2 area. 2 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 EXPOSURE29 samples
personal-health-samplesarea-samples04 / PRODUCTIONcontext
Quarterly production and employment
65K employee hours and 133 summed average employees across reported subunits in the latest published quarter.
2026-Q20 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
68 contested-violation rows, 68 civil-penalty docket/decision rows, and 37 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE173 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 CONTEXT40 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
114 inspection events and 5K published inspection hours across the historical record.
OVERSIGHT COVERAGE33 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 2026. 6 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 56.20003Housekeeping.2 recent rows ↗30 CFR 56.14107Moving machine parts.1 recent row ↗30 CFR 56.12018Identification of power switches.1 recent row ↗30 CFR 46.7New task training.1 recent row ↗30 CFR 56.4201Inspection.1 recent row ↗30 CFR 56.23002Written safety program.1 recent row ↗30 CFR 56.14112Construction and maintenance of guards.1 recent row ↗30 CFR 56.12004Electrical conductors.2 recent rows ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
517931256.20003(a)Citation
517356456.14107(a)S&S
517356356.12018Citation
517334646.7(a)Order
517334556.4201(a)(1)Citation
517254956.20003(c)S&S
517254856.23002(b)Citation
517356256.14112(a)(1)Citation
Coal dust, noise and other contaminants. Silica records above ↑
Nuisance dust, respirable, <1% QtzBelt Cleaner
C/E: 00.05Concentration: 0000.50 · limit: 0010.00Source unit unspecified
Nuisance dust, respirable, <1% QtzUtility Man
C/E: 00.09Concentration: 0000.88 · limit: 0010.00Source unit unspecified
Nuisance dust, respirable, <1% QtzLab Technician
C/E: 00.03Concentration: 0000.27 · limit: 0010.00Source unit unspecified
Nuisance dust, respirable, <1% QtzCar Shake-out Operator
C/E: 00.03Concentration: 0000.31 · limit: 0010.00Source unit unspecified
Nuisance dust, respirable, <1% QtzCar Shake-out Operator
C/E: 00.11Concentration: 0001.12 · limit: 0010.00Source unit unspecified
Calcium oxideLab Technician
C/E: 00.01Concentration: 0000.05 · limit: 0005.00Source unit unspecified
Calcium oxideLab Technician
C/E: 00.02Concentration: 0000.08 · limit: 0005.00Source unit unspecified
Nuisance dust, respirable, <1% QtzMechanic
C/E: 00.05Concentration: 0000.50 · 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 · contractors156Feb 1, 2000—Sep 24, 2026mine-keyed
Addresses of Recordidentity · logistics1Sep 30, 1990—Sep 30, 1990mine-keyed
Assessed Violationscompliance · legal591Jun 13, 2000—May 28, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal68Nov 5, 2014—Aug 25, 2026mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal37Aug 31, 2001—Jan 15, 2021mine-keyed
Contested Violationscompliance · legal68Mar 4, 2014—May 27, 2026mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety3,214Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety770Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance2Jan 1, 1950—Jan 1, 1950mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance317Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance73Not published—Not publishedmine-keyed
Inspectionssafety · compliance114Jun 13, 2000—Aug 26, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety2Aug 26, 2026—Aug 26, 2026mine-keyed
Metal and Nonmetal Personal Health Sampleshealth · safety27Mar 26, 2003—Sep 9, 2025mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal600Jun 13, 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.