MINE DETAILS
Flatrock Quarry
MSHA MINE ID4400081
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Flatrock Quarry38.72139, -78.71361Open 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
36,243reported 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 | 3,103 | 0.00 | 6 | 1/1 mines reporting |
| 2025 Q2 | 0 | 5,781 | 0.00 | 11 | 1/1 mines reporting |
| 2025 Q3 | 0 | 5,953 | 0.00 | 12 | 1/1 mines reporting |
| 2025 Q4 | 0 | 6,532 | 0.00 | 14 | 1/1 mines reporting |
| 2026 Q1 | 0 | 6,946 | 0.00 | 14 | 1/1 mines reporting |
| 2026 Q2 | 0 | 7,928 | 0.00 | 15 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
196 significant & substantial (S&S)
Accident records
21 records classified as fatality
Proposed penalties · USD
10,995.0012 of 19 violations with amounts
On-site inspection hours
111.258 inspections · 8 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 | 1 | 14.0 |
| 2025-Q2 | 1 | 1 | 151.00 | 0 | 0 | 1 | 9.8 |
| 2025-Q3 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2025-Q4 | 1 | 0 | — | 1 | 1 | 1 | 27.5 |
| 2026-Q1 | 7 | 2 | 7,164.00 | 1 | 0 | 2 | 29.0 |
| 2026-Q2 | 4 | 3 | 3,529.00 | 0 | 0 | 1 | 0.0 |
| 2026-Q3 | 1 | 0 | 151.00 | 0 | 0 | 1 | 19.0 |
| 2026-Q4 * | 5 | 0 | — | 0 | 0 | 1 | 12.0 |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
56.12032
56.14205
56.4201(a)(1)
56.18002(d)
56.20003(a)
Regular Safety and Health Inspection · 12.0 on-site hours
Regular Safety and Health Inspection · 19.0 on-site hours
56.14100(b) · $151.00 proposed
56.15007 · S&S · $1,126.00 proposed
56.4604 · S&S · $1,126.00 proposed
56.4604 · S&S · $1,126.00 proposed
46.9(b)(2) · $151.00 proposed
Spot Inspection · 0.0 on-site hours
46.7(a) · S&S · $3,538.00 proposed
56.14209(a) · S&S · $3,022.00 proposed
POWERED HAULAGE · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was operating a haul truck that became stuck in mud. To recover the vehicle, a chain was connected to a dozer. The chain broke under load and struck the operator through the windshield. The incident resulted in medical treatment for facial and head injuries. Damage to equipment was limited to the broken windshield.
Non-Fatal Accident Investigation · 16.0 on-site hours
Description not reported
Regular Safety and Health Inspection · 13.0 on-site hours
56.14101(a)(2) · $151.00 proposed
56.14100(a) · $151.00 proposed
56.14132(a) · $151.00 proposed
56.14100(a) · $151.00 proposed
EXPLODING VESSELS UNDER PRESSURE · FATALITY
Accident narrative
The injured employee was performing maintenance on a rock crusher using a cutting torch when a fire occurred. The injured employee received burns to EE's body and which ultimately proved fatal.
Fatal Accident Investigation · 27.5 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.
—
Rogers Group InccontrolsRogers Group Inc.operatesFlatrock Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4400081—
Rockydale Quarries CorporationcontrolsMundy Stone CompanyoperatesFlatrock Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4400081—
Willis Trust et alcontrolsMundy Stone CompanyoperatesFlatrock Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4400081—
David D WilliscontrolsMundy Stone CompanyoperatesFlatrock Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4400081—
Eagle CorpcontrolsC S Mundy Quarries IncoperatesFlatrock Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4400081—
Larry ThomascontrolsC S Mundy Quarries IncoperatesFlatrock Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4400081Other 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
13 historical accident/injury rows; 1 coded fatalities and 33 lost days across the published record.
ACCIDENT + INJURY RECORD3 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
90 violation rows across the full record; 17 carry an S&S flag and $24,969 appears in current assessed amounts.
ENFORCEMENT ACTIVITY26 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHcontext
Occupational health samples
44 personal. 0 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 EXPOSURE44 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.
2026-Q20 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
13 contested-violation rows, 25 civil-penalty docket/decision rows, and 7 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE45 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 CONTEXT6 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
75 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 13, 2026. 17 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 |
|---|---|---|---|---|---|
| 000000202603481300 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Laborer, Bullgang | 0× published limitConcentration: 0000.17 · limit: 0000.00Source unit unspecified | Not reported | NO ACTIONInspection F009795 |
| 000000202603481100 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Truck Driver | 0× published limitConcentration: 0000.15 · limit: 0000.00Source unit unspecified | Not reported | NO ACTIONInspection F009795 |
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 56.12032Inspection and cover plates.1 recent row ↗30 CFR 56.14205Machinery, equipment, and tools.1 recent row ↗30 CFR 56.4201Inspection.1 recent row ↗30 CFR 56.18002Examination of working places.1 recent row ↗30 CFR 56.20003Housekeeping.1 recent row ↗30 CFR 56.14100Safety defects; examination, correction and records.1 recent row ↗30 CFR 56.15007Protective equipment or clothing for welding, cutting, or working with molten metal.1 recent row ↗30 CFR 56.4604Preparation of pipelines or containers.2 recent rows ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
921691156.12032Citation
921691056.14205Citation
921690956.4201(a)(1)Citation
921690856.18002(d)Citation
921690756.20003(a)Citation
828413756.14100(b)Citation
828491656.15007S&S
828491556.4604S&S
Coal dust, noise and other contaminants. Silica records above ↑
Respirable dust, <.1mgTruck Driver
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgRotary Bucket Ex. Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgRotary Bucket Ex. Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgFront-end Loader Operator
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, <.1mgRotary Bucket Ex. Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgFront-end Loader Operator
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 · contractors13Sep 13, 2001—Feb 13, 2026mine-keyed
Addresses of Recordidentity · logistics1Jan 13, 1983—Jan 13, 1983mine-keyed
Assessed Violationscompliance · legal81Apr 19, 2000—Aug 17, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal25Jul 18, 2000—Oct 24, 2018mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal7Aug 7, 2002—Mar 12, 2026mine-keyed
Contested Violationscompliance · legal13Jan 26, 2010—May 11, 2026mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety532Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety124Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance6Jan 1, 1950—Jun 5, 2026mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance318Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance81Not published—Not publishedmine-keyed
Inspectionssafety · compliance75Apr 4, 2000—Oct 5, 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 · safety44Mar 27, 2002—Aug 26, 2026mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal90Apr 19, 2000—Oct 6, 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.