MINE DETAILS
PENFIELD PLANT
MSHA MINE ID3000033
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- PENFIELD PLANT43.14667, -77.48139Open 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
73 significant & substantial (S&S)
Accident records
20 records classified as fatality
Proposed penalties · USD
2,689.006 of 7 violations with amounts
On-site inspection hours
62.756 inspections · 6 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 | — | 0 | 0 | 0 | — |
| 2025-Q2 | 1 | 0 | 151.00 | 0 | 0 | 1 | 17.5 |
| 2025-Q3 | 2 | 2 | 2,085.00 | 1 | 0 | 1 | 9.5 |
| 2025-Q4 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2026-Q1 | 1 | 0 | 151.00 | 1 | 0 | 1 | 9.5 |
| 2026-Q2 | 0 | 0 | — | 0 | 0 | 1 | 3.5 |
| 2026-Q3 | 3 | 1 | 302.00 | 0 | 0 | 2 | 22.8 |
| 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 · 1.5 on-site hours
56.5001(a)/.5005 · S&S
50.30(a) · $151.00 proposed
Regular Safety and Health Inspection · 21.3 on-site hours
56.9315 · $151.00 proposed
Compliance Follow-up Inspection · 3.5 on-site hours
47.41(a) · $151.00 proposed
Regular Safety and Health Inspection · 9.5 on-site hours
MACHINERY · DAYS AWAY FROM WORK ONLY
Accident narrative
EE was using a cordless impact to undo bolts on the CR1 flywheel. EE positioned a hand behind the sheave, between the crusher frame and the nut to hold the nut when it broke free. When the bolt broke loose, the nut followed the threads, moving backward and pinching the employees finger between the nut and the frame. EE was brought to get X-rays where a fracture was discovered.
56.6306(e) · S&S · $1,126.00 proposed
56.6306(e) · S&S · $959.00 proposed
EXPLOSIVES AND BREAKING AGENTS · ACCIDENT ONLY
Accident narrative
Hilltop Energy Inc had a Flyrock incident that struck a parked vehicle when 4 rocks where collected from a local Park area. No injuries occurred and MSHA was called and on scene.
Spot Inspection · 9.5 on-site hours
56.18002(b) · $151.00 proposed
Regular Safety and Health Inspection · 17.5 on-site hours
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 PLCcontrolsDolomite GroupoperatesPENFIELD PLANT
msha-controller-operator-history · controller/operator co-tenure derived on mine 3000033—
John M OdenbachcontrolsDolomite GroupoperatesPENFIELD PLANT
msha-controller-operator-history · controller/operator co-tenure derived on mine 3000033Other 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
12 historical accident/injury rows; 0 coded fatalities and 34 lost days across the published record.
ACCIDENT + INJURY RECORD5 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
76 violation rows across the full record; 15 carry an S&S flag and $15,061 appears in current assessed amounts.
ENFORCEMENT ACTIVITY22 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
51 personal. 3 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 EXPOSURE51 samples
personal-health-samples04 / PRODUCTIONcontext
Quarterly production and employment
8K employee hours and 15 summed average employees across reported subunits in the latest published quarter.
2002-Q40 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
2 contested-violation rows, 2 civil-penalty docket/decision rows, and 2 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE6 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 CONTEXT2 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
72 inspection events and 1K published inspection hours across the historical record.
OVERSIGHT COVERAGE16 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 17, 2026. 23 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 |
|---|---|---|---|---|---|
| 000000202603523300 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Utility Man | 0.47× published limitConcentration: 0000.21 · limit: 0000.45Source unit unspecified | Not reported | NO ACTIONInspection F03FB0B |
| 000000202603523200 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Utility Man | 2.01× published limitConcentration: 0001.49 · limit: 0000.74Source unit unspecified | Not reported | CITATION/ORDER ISSUEDInspection F03FB0B |
| 000000202603523100 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Utility Man | 2.83× published limitConcentration: 0002.29 · limit: 0000.81Source unit unspecified | Not reported | CITATION/ORDER ISSUEDInspection F03FB0B |
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 50.30Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.1 recent row ↗30 CFR 56.9315Dust control.1 recent row ↗30 CFR 47.41Requirement for container labels.1 recent row ↗30 CFR 56.6306Loading, blasting, and security.2 recent rows ↗30 CFR 56.18002Examination of working places.1 recent row ↗30 CFR 56.12030Correction of dangerous conditions.1 recent row ↗30 CFR 56.14112Construction and maintenance of guards.2 recent rows ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
507966456.5001(a)/.5005S&S
507965850.30(a)Citation
507965756.9315Citation
507525047.41(a)Citation
507344356.6306(e)S&S
507344256.6306(e)S&S
980807456.18002(b)Citation
980625556.12030Citation
Coal dust, noise and other contaminants. Silica records above ↑
Respirable dust, <.1mgCrusher Oper/Worker
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgCrusher Oper/Worker
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgTruck Driver
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgCleanup Man
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgCleanup Man
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgTruck Driver
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
SOURCE COVERAGE
Reporting dates and coverage
15 datasets contain linked records. Missing datasets are listed below.
DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors12Jan 17, 2000—Jan 12, 2026mine-keyed
Addresses of Recordidentity · logistics1Jun 28, 1984—Jun 28, 1984mine-keyed
Assessed Violationscompliance · legal73Feb 1, 2000—Aug 26, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal2Not published—Not publishedmine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal2May 18, 2001—Mar 5, 2026mine-keyed
Contested Violationscompliance · legal2Sep 18, 2025—Sep 18, 2025mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety412Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety87Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance2Jan 1, 1950—Jun 14, 2000mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance35Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance76Not published—Not publishedmine-keyed
Inspectionssafety · compliance72Feb 1, 2000—Sep 14, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety—No published rowsabsent / not applicable
Metal and Nonmetal Personal Health Sampleshealth · safety51Apr 24, 2001—Aug 26, 2026mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal76Feb 1, 2000—Sep 14, 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.