MINE DETAILS
Amrize Ada Plant
MSHA MINE ID3400023
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Amrize Ada Plant34.76806, -96.60889Open 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
452,086reported 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 | 75,152 | 0.00 | 139 | 1/1 mines reporting |
| 2025 Q2 | 0 | 76,533 | 0.00 | 139 | 1/1 mines reporting |
| 2025 Q3 | 0 | 75,539 | 0.00 | 140 | 1/1 mines reporting |
| 2025 Q4 | 0 | 74,250 | 0.00 | 138 | 1/1 mines reporting |
| 2026 Q1 | 0 | 73,442 | 0.00 | 139 | 1/1 mines reporting |
| 2026 Q2 | 0 | 77,170 | 0.00 | 140 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
595 significant & substantial (S&S)
Accident records
150 records classified as fatality
Proposed penalties · USD
24,400.0059 of 59 violations with amounts
On-site inspection hours
207.0011 inspections · 11 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 | 18 | 1 | 4,328.00 | 1 | 0 | 2 | 52.5 |
| 2025-Q2 | 11 | 1 | 3,332.00 | 3 | 0 | 2 | 50.3 |
| 2025-Q3 | 0 | 0 | — | 3 | 0 | 1 | 1.5 |
| 2025-Q4 | 14 | 1 | 8,279.00 | 4 | 0 | 1 | 46.3 |
| 2026-Q1 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2026-Q2 | 16 | 2 | 8,461.00 | 2 | 0 | 3 | 45.5 |
| 2026-Q3 | 0 | 0 | — | 2 | 0 | 2 | 11.0 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
Verbal Hazard Complaint Inspections · 3.5 on-site hours
Non-Fatal Accident Investigation · 7.5 on-site hours
DISORDERS (PHYSICAL AGENTS) · OCCUPATNAL ILLNESS NOT DEG 1-6
Accident narrative
Employee suffered a heat illness and was unresponsive
HANDTOOLS (NONPOWERED) · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
Employee was removing a liner from inside number 1 raw mill, when the liner dislodged from the wall it slide down the mill bar the employee was using pinching their left index finger.
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was setting brake on rail car when felt discomfort in shoulder. Employee refused medical care until 7/7 and was referred to a specialist. Employee was seen by specialist on 7/29 and Diagnosed with shoulder tear.
Compliance Follow-up Inspection · 1.5 on-site hours
DISORDERS (REPEATED TRAUMA) · OCCUPATNAL ILLNESS NOT DEG 1-6
Accident narrative
Employee had a Reportable hearing loss for noise exposure
Compliance Follow-up Inspection · 2.0 on-site hours
56.18002(b) · $165.00 proposed
56.9300(a) · S&S · $883.00 proposed
56.14209(b) · $151.00 proposed
56.14100(b) · $592.00 proposed
56.14100(b) · $697.00 proposed
56.14130(c) · $151.00 proposed
56.14201(b) · $1,037.00 proposed
56.14107(a) · $313.00 proposed
56.9100(b) · $697.00 proposed
56.12023 · $209.00 proposed
56.14132(a) · $432.00 proposed
56.14132(a) · S&S · $2,133.00 proposed
56.12032 · $432.00 proposed
56.12004 · $209.00 proposed
56.13021 · $151.00 proposed
56.11012 · $209.00 proposed
Regular Safety and Health Inspection · 42.0 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.
—
Amrize LtdcontrolsAmrize Cement IncoperatesAmrize Ada Plant
msha-controller-operator-history · controller/operator co-tenure derived on mine 3400023—
Holcim LtdcontrolsAmrize Cement IncoperatesAmrize Ada Plant
msha-controller-operator-history · controller/operator co-tenure derived on mine 3400023—
Holcim LtdcontrolsAmrize Cement IncoperatesAmrize Ada Plant
msha-controller-operator-history · controller/operator co-tenure derived on mine 3400023—
Holcim LtdcontrolsHolnam IncoperatesAmrize Ada Plant
msha-controller-operator-history · controller/operator co-tenure derived on mine 3400023—
Ideal Basic Industries InccontrolsIdeal Basic Industries IncoperatesAmrize Ada Plant
msha-controller-operator-history · controller/operator co-tenure derived on mine 3400023Other 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
168 historical accident/injury rows; 0 coded fatalities and 2,923 lost days across the published record.
ACCIDENT + INJURY RECORD36 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
1,006 violation rows across the full record; 263 carry an S&S flag and $573,188 appears in current assessed amounts.
ENFORCEMENT ACTIVITY210 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
173 personal; 1 area. 9 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 EXPOSURE174 samples
personal-health-samplesarea-samples04 / PRODUCTIONcontext
Quarterly production and employment
77K employee hours and 140 summed average employees across reported subunits in the latest published quarter.
2026-Q20 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
42 contested-violation rows, 46 civil-penalty docket/decision rows, and 12 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE100 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 CONTEXT29 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
135 inspection events and 5K published inspection hours across the historical record.
OVERSIGHT COVERAGE31 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 2026. 52 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 56.18002Examination of working places.1 recent row ↗30 CFR 56.9300Berms or guardrails.1 recent row ↗30 CFR 56.14209Safety procedures for towing.1 recent row ↗30 CFR 56.14100Safety defects; examination, correction and records.2 recent rows ↗30 CFR 56.14130Roll-over protective structures (ROPS) and seat belts.1 recent row ↗30 CFR 56.14201Conveyor start-up warnings.1 recent row ↗30 CFR 56.14107Moving machine parts.1 recent row ↗30 CFR 56.9100Traffic control.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
517780156.18002(b)Citation
517080056.9300(a)S&S
517079956.14209(b)Citation
517079856.14100(b)Citation
517079756.14100(b)Citation
517079656.14130(c)Citation
517079556.14201(b)Citation
517079456.14107(a)Citation
Coal dust, noise and other contaminants. Silica records above ↑
Respirable dust, <.1mgFront-end Loader Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgBulldozer Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgUtility Man
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Nuisance dust, total, <1% QtzUtility Man
C/E: 00.21Concentration: 0002.07 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzUtility Man
C/E: 01.48Concentration: 0014.78 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzLaborer, Bullgang
C/E: 00.79Concentration: 0007.88 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzBall Mill Operator
C/E: 00.56Concentration: 0005.60 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzBall Mill Operator
C/E: 00.13Concentration: 0001.28 · 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 · contractors168Jan 20, 2000—Aug 16, 2026mine-keyed
Addresses of Recordidentity · logistics1Mar 8, 1990—Mar 8, 1990mine-keyed
Assessed Violationscompliance · legal1,000Feb 24, 2000—Apr 8, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal46Jul 21, 2000—Sep 29, 2017mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal12May 6, 2002—May 9, 2022mine-keyed
Contested Violationscompliance · legal42Jun 23, 2009—May 22, 2017mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety3,089Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety702Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance5Jan 1, 1950—Dec 12, 2001mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance318Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance81Not published—Not publishedmine-keyed
Inspectionssafety · compliance135Jan 10, 2000—Aug 19, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety1Jan 7, 2003—Jan 7, 2003mine-keyed
Metal and Nonmetal Personal Health Sampleshealth · safety173Apr 10, 2001—Mar 19, 2025mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal1,006Feb 24, 2000—Apr 8, 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.