MINE DETAILS
Amrize Alpena Plant
MSHA MINE ID2000044
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Amrize Alpena Plant45.07250, -83.40694Open 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
13324 significant & substantial (S&S)
Accident records
120 records classified as fatality
Proposed penalties · USD
75,002.00128 of 133 violations with amounts
On-site inspection hours
779.5016 inspections · 16 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 | 34 | 7 | 36,238.00 | 2 | 0 | 6 | 267.8 |
| 2025-Q2 | 12 | 2 | 6,949.00 | 2 | 0 | 1 | 3.5 |
| 2025-Q3 | 1 | 1 | 3,736.00 | 2 | 0 | 2 | 21.8 |
| 2025-Q4 | 0 | 0 | — | 1 | 0 | 1 | 2.3 |
| 2026-Q1 | 46 | 6 | 12,538.00 | 2 | 0 | 2 | 245.8 |
| 2026-Q2 | 35 | 6 | 15,541.00 | 3 | 0 | 1 | 211.5 |
| 2026-Q3 | 5 | 2 | — | 0 | 0 | 3 | 27.0 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
56.5001(a)/.5005
56.9315 · S&S
56.17001
Spot Inspection · 1.0 on-site hours
103 (g) Written Notification Hazard Complaint Inspectio · 16.0 on-site hours
56.12004
Verbal Hazard Complaint Inspections · 10.0 on-site hours
56.20003(a) · S&S
POWERED HAULAGE · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
While a CAT 777 truck was pulling away after loading, a CAT 992G loader bucket contacted the top of the truck's box. The unexpected impact caused the truck operator to tense up and shift abruptly in their seat, resulting in reported mild back pain.
56.14112(b) · $177.00 proposed
56.12004 · $288.00 proposed
56.11012 · $465.00 proposed
56.14132(a) · $151.00 proposed
56.20003(a) · S&S · $592.00 proposed
56.14101(a)(2) · $209.00 proposed
56.14101(a)(2) · $209.00 proposed
56.4101 · $151.00 proposed
56.12032 · $151.00 proposed
MACHINERY · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
While performing geotechnical soil borings for new project driller got EE's tip of the left pointer finger smashed. Finger was caught in-between the vice and drill rig while attempting to remove pin to open the vice up to pull augers. Finger needed first aid which was three stiches and driller returned to work after receiving first aid.
56.14206(b) · $209.00 proposed
56.14101(a)(2) · $209.00 proposed
56.14100(b) · $151.00 proposed
56.12032 · $432.00 proposed
56.11012 · $177.00 proposed
56.14115(b) · S&S · $1,320.00 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.
—
Amrize LtdcontrolsAmrize Cement Inc.operatesAmrize Alpena Plant
msha-controller-operator-history · controller/operator co-tenure derived on mine 2000044—
Holcim LtdcontrolsAmrize Cement Inc.operatesAmrize Alpena Plant
msha-controller-operator-history · controller/operator co-tenure derived on mine 2000044—
Holcim LtdcontrolsAmrize Cement Inc.operatesAmrize Alpena Plant
msha-controller-operator-history · controller/operator co-tenure derived on mine 2000044—
Holcim LtdcontrolsLafarge North AmericaoperatesAmrize Alpena Plant
msha-controller-operator-history · controller/operator co-tenure derived on mine 2000044—
Lafarge S AcontrolsLafarge North AmericaoperatesAmrize Alpena Plant
msha-controller-operator-history · controller/operator co-tenure derived on mine 2000044—
Lafarge S AcontrolsLafarge CorpoperatesAmrize Alpena Plant
msha-controller-operator-history · controller/operator co-tenure derived on mine 2000044—
Lafarge S AcontrolsNational Gypsum CompanyoperatesAmrize Alpena Plant
msha-controller-operator-history · controller/operator co-tenure derived on mine 2000044Other 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
202 historical accident/injury rows; 0 coded fatalities and 1,213 lost days across the published record.
ACCIDENT + INJURY RECORD39 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
1,743 violation rows across the full record; 278 carry an S&S flag and $753,449 appears in current assessed amounts.
ENFORCEMENT ACTIVITY654 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
401 personal; 38 area. 52 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 EXPOSURE439 samples
personal-health-samplesarea-samples04 / PRODUCTIONcontext
Quarterly production and employment
155K employee hours and 264 summed average employees across reported subunits in the latest published quarter.
2002-Q40 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
6 contested-violation rows, 8 civil-penalty docket/decision rows, and 14 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE28 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 CONTEXT46 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
169 inspection events and 17K published inspection hours across the historical record.
OVERSIGHT COVERAGE50 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 17, 2026. 49 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 56.5001Exposure limits for airborne contaminants.1 recent row ↗30 CFR 56.9315Dust control.1 recent row ↗30 CFR 56.17001Illumination of surface working areas.1 recent row ↗30 CFR 56.12004Electrical conductors.2 recent rows ↗30 CFR 56.20003Housekeeping.2 recent rows ↗30 CFR 56.14112Construction and maintenance of guards.1 recent row ↗30 CFR 56.11012Protection for openings around travelways.1 recent row ↗30 CFR 56.14132Horns and backup alarms.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
511103956.5001(a)/.5005Citation
511103756.9315S&S
511103656.17001Citation
511103856.12004Citation
511103556.20003(a)S&S
511083356.14112(b)Citation
511072956.12004Citation
511072856.11012Citation
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
Nuisance dust, total, <1% QtzPipe Fitter/Millright/Plumber
C/E: 10.33Concentration: 0103.27 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzPipe Fitter/Millright/Plumber
C/E: 04.03Concentration: 0040.28 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzLaborer, Bullgang
C/E: 00.63Concentration: 0006.30 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzLaborer, Bullgang
C/E: 00.41Concentration: 0004.07 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzLaborer, Bullgang
C/E: 00.06Concentration: 0000.57 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzLaborer, Bullgang
C/E: 00.38Concentration: 0003.77 · limit: 0010.00Source unit unspecified
Nuisance dust, total, <1% QtzLaborer, Bullgang
C/E: 01.76Concentration: 0017.63 · 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 · contractors202Jan 13, 2000—Jun 25, 2026mine-keyed
Addresses of Recordidentity · logistics1Jul 16, 1976—Jul 16, 1976mine-keyed
Assessed Violationscompliance · legal1,732Feb 1, 2000—May 20, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal8Sep 10, 2002—Nov 20, 2025mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal14Mar 13, 2000—May 6, 2024mine-keyed
Contested Violationscompliance · legal6Aug 2, 2021—Mar 19, 2025mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety4,534Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety945Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance7Jan 1, 1950—Sep 25, 2018mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance36Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance81Not published—Not publishedmine-keyed
Inspectionssafety · compliance169Feb 1, 2000—Sep 8, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety38Jun 4, 2008—Mar 20, 2018mine-keyed
Metal and Nonmetal Personal Health Sampleshealth · safety401Sep 19, 2000—Sep 9, 2026mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal1,743Feb 1, 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.