MINE DETAILS
Bluff City Mine
MSHA MINE ID1100122
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Bluff City Mine38.90694, -90.12222Open 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
190,731reported 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 | 24,395 | 0.00 | 45 | 1/1 mines reporting |
| 2025 Q2 | 0 | 22,770 | 0.00 | 57 | 1/1 mines reporting |
| 2025 Q3 | 0 | 40,680 | 0.00 | 57 | 1/1 mines reporting |
| 2025 Q4 | 0 | 34,825 | 0.00 | 58 | 1/1 mines reporting |
| 2026 Q1 | 0 | 30,104 | 0.00 | 56 | 1/1 mines reporting |
| 2026 Q2 | 0 | 37,957 | 0.00 | 63 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
277 significant & substantial (S&S)
Accident records
50 records classified as fatality
Proposed penalties · USD
22,121.0022 of 27 violations with amounts
On-site inspection hours
257.0016 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 | 1 | 0 | 151.00 | 1 | 0 | 2 | 26.8 |
| 2025-Q2 | 3 | 0 | 453.00 | 0 | 0 | 1 | 24.0 |
| 2025-Q3 | 3 | 1 | 453.00 | 1 | 0 | 5 | 54.3 |
| 2025-Q4 | 2 | 0 | 302.00 | 1 | 0 | 1 | 31.5 |
| 2026-Q1 | 9 | 4 | 19,693.00 | 1 | 0 | 4 | 46.0 |
| 2026-Q2 | 5 | 1 | 1,069.00 | 0 | 0 | 1 | 33.5 |
| 2026-Q3 | 4 | 1 | — | 1 | 0 | 2 | 41.0 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
Spot Inspection · 3.0 on-site hours
57.18002(a) · S&S
57.14200
57.4130(b)
57.11001
Regular Safety and Health Inspection · 38.0 on-site hours
POWERED HAULAGE · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
Employee notified mine management of pain in their shoulder / neck area from operating the yard loader. Employee was seen by a Dr. on 09/14/2026 and given physical therapy.
56.11001 · $151.00 proposed
57.14100(b) · $151.00 proposed
57.3200 · S&S · $465.00 proposed
56.4101 · $151.00 proposed
56.14100(b) · $151.00 proposed
Regular Safety and Health Inspection · 33.5 on-site hours
Spot Inspection · 4.0 on-site hours
57.15006 · S&S · $2,312.00 proposed
48.27(c) · S&S · $7,676.00 proposed
57.12017 · S&S · $8,529.00 proposed
Spot Inspection · 0.0 on-site hours
57.12020 · $209.00 proposed
ELECTRICAL · DYS AWY FRM WRK & RESTRCTD ACT
Accident narrative
The employee was attempting to trouble shoot an issue on the 3/4-inch stacker inside the MCC. The employee opened the bucket of the MCC and did not turn off the power to the bucket, while attempting to remove a fuse an arc flash occurred injuring the employees' hands.
Non-Fatal Accident Investigation · 10.8 on-site hours
Description not reported
57.14107(a) · $151.00 proposed
57.12028 · $151.00 proposed
57.12026 · $267.00 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.
—
Martin Marietta Materials InccontrolsMartin Marietta Materials, Inc.operatesBluff City Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 1100122—
HBM Holdings CompanycontrolsMississippi Lime CompanyoperatesBluff City Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 1100122—
42 North Resources Partners II LP et alcontrolsNew Frontier Materials Operations Alpha, LLCoperatesBluff City Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 1100122—
RWNIH-OP Holdings LLC et alcontrolsNew Frontier Materials Operations Alpha, LLCoperatesBluff City Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 1100122—
PEPI Capital, L.P. et alcontrolsNew Frontier Materials Operations Alpha, LLCoperatesBluff City Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 1100122—
Fred Weber, Inc.controlsBluff City Minerals LLCoperatesBluff City Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 1100122—
Margaret J Heckman et alcontrolsMississippi Lime CompanyoperatesBluff City Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 1100122Other 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
112 historical accident/injury rows; 2 coded fatalities and 445 lost days across the published record.
ACCIDENT + INJURY RECORD11 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
447 violation rows across the full record; 107 carry an S&S flag and $119,640 appears in current assessed amounts.
ENFORCEMENT ACTIVITY70 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
333 personal; 25 area. 22 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 EXPOSURE358 samples
personal-health-samplesarea-samples04 / PRODUCTIONcontext
Quarterly production and employment
38K employee hours and 63 summed average employees across reported subunits in the latest published quarter.
2026-Q20 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
40 contested-violation rows, 41 civil-penalty docket/decision rows, and 54 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE135 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 CONTEXT7 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
178 inspection events and 8K published inspection hours across the historical record.
OVERSIGHT COVERAGE42 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 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 |
|---|---|---|---|---|---|
| 000000202603599300 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Utility Man | 0× published limitConcentration: 0000.55 · limit: 0000.00Source unit unspecified | Not reported | NO ACTIONInspection F03B90A |
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 57.18002Examination of working places.1 recent row ↗30 CFR 57.14200Warnings prior to starting or moving equipment.1 recent row ↗30 CFR 57.4130Surface electric substations and liquid storage facilities.1 recent row ↗30 CFR 57.11001Safe access.1 recent row ↗30 CFR 56.11001Safe access.1 recent row ↗30 CFR 57.14100Safety defects; examination, correction and records.1 recent row ↗30 CFR 57.3200Correction of hazardous conditions.1 recent row ↗30 CFR 56.4101Warning signs.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
504237057.18002(a)S&S
504236957.14200Citation
978896257.4130(b)Citation
978896157.11001Citation
504235756.11001Citation
978893057.14100(b)Citation
978892957.3200S&S
504235656.4101Citation
Coal dust, noise and other contaminants. Silica records above ↑
Nuisance dust, respirable, <1% QtzUtility Man
C/E: 00.04Concentration: 0000.35 · limit: 0010.00Source unit unspecified
TC from EC @ 160Scaling (hand)
C/E: 00.00Concentration: 0000.00 · limit: 0160.00Source unit unspecified
TC @ 160Scaling (hand)
C/E: 00.00Concentration: 0000.00 · limit: 0160.00Source unit unspecified
ORGANIC CARBONScaling (hand)
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
EC @ 160Scaling (hand)
C/E: 00.00Concentration: 0000.00 · limit: 0160.00Source unit unspecified
Unlisted Particulate, total, <1% QtzLaborer, Bullgang
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Unlisted Particulate, total, <1% QtzLaborer, Bullgang
C/E: 00.00Concentration: 0002.57 · limit: 0000.00Source unit unspecified
Unlisted Particulate, total, <1% QtzLaborer, Bullgang
C/E: 00.00Concentration: 0003.20 · limit: 0000.00Source unit unspecified
SOURCE COVERAGE
Reporting dates and coverage
16 datasets contain linked records. Missing datasets are listed below.
DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors112Aug 10, 2000—Aug 5, 2026mine-keyed
Addresses of Recordidentity · logistics1Jul 4, 1976—Jul 4, 1976mine-keyed
Assessed Violationscompliance · legal438Feb 1, 2000—Jun 10, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal41Aug 6, 2002—Apr 26, 2021mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal54Sep 27, 2000—Aug 3, 2026mine-keyed
Contested Violationscompliance · legal40Aug 18, 2009—Mar 17, 2026mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety1,213Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety244Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance7Jan 1, 1950—Jun 15, 2026mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance409Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance105Not published—Not publishedmine-keyed
Inspectionssafety · compliance178Feb 1, 2000—Sep 2, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety25Sep 16, 2008—Aug 26, 2026mine-keyed
Metal and Nonmetal Personal Health Sampleshealth · safety333Mar 27, 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 · legal447Feb 1, 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.