MINE DETAILS

NO. 77

ActiveUndergroundCoal (Bituminous)

MSHA MINE ID1509636

OPERATORBlue Diamond Coal Co

CONTROLLERSev.en Global Investments a.s.

LOCATIONPerry, KY

PUBLIC RECORD25,446 linked rows

LOCATION

Mine location

1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.

Mine coordinates

NO. 7737.02333, -83.12778Open map ↗

Quarterly trends

2025 Q1 – 2026 Q4

JSON CSV

Database snapshot · 2026-10-13. MSHA quarterly production and employment reports.

Coal production

378,506

reported short tons

2025 Q170,533
2025 Q258,082
2025 Q349,478
2025 Q458,857
2026 Q169,797
2026 Q271,759
2026 Q3—No usable value reported
2026 Q4 *—No usable value reported

Hours worked

198,798

reported employee hours

2025 Q137,998
2025 Q233,755
2025 Q331,663
2025 Q430,402
2026 Q132,248
2026 Q232,732
2026 Q3—No usable value reported
2026 Q4 *—No usable value reported

Tons per hour

1.90

production ÷ hours worked

2025 Q11.86
2025 Q21.72
2025 Q31.56
2025 Q41.94
2026 Q12.16
2026 Q22.19
2026 Q3—No usable value reported
2026 Q4 *—No usable value reported

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

Quarterly production, employment and reporting coverage for NO. 77
Quarter	Coal (short tons)	Hours worked	Tons / hour	Avg. employees	Coverage
2025 Q1	70,533	37,998	1.86	65	1/1 mines reporting
2025 Q2	58,082	33,755	1.72	65	1/1 mines reporting
2025 Q3	49,478	31,663	1.56	60	1/1 mines reporting
2025 Q4	58,857	30,402	1.94	60	1/1 mines reporting
2026 Q1	69,797	32,248	2.16	56	1/1 mines reporting
2026 Q2	71,759	32,732	2.19	56	1/1 mines reporting
2026 Q3	—	—	—	—	No report
2026 Q4	—	—	—	—	No report

Safety and enforcement

2025-01-01 – 2026-10-13

Violations

236

41 significant & substantial (S&S)

2025 Q157
2025 Q242
2025 Q336
2025 Q413
2026 Q118
2026 Q233
2026 Q334
2026 Q4 *3

Accident records

0 records classified as fatality

2025 Q10
2025 Q21
2025 Q31
2025 Q41
2026 Q11
2026 Q20
2026 Q32
2026 Q4 *0

Proposed penalties · USD

77,722.00

218 of 236 violations with amounts

2025 Q119,061
2025 Q212,543
2025 Q312,693
2025 Q43,326
2026 Q15,446
2026 Q216,448
2026 Q38,205
2026 Q4 *—

On-site inspection hours

2,566.75

58 inspections · 58 with hours

2025 Q1532.25
2025 Q2367.25
2025 Q3343.75
2025 Q4285.50
2026 Q1310.00
2026 Q2327.00
2026 Q3378.00
2026 Q4 *23.00

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	Inspections	On-site hours
2025-Q1	57	6	19,061.00	0	9	532.3
2025-Q2	42	8	12,543.00	1	8	367.3
2025-Q3	36	10	12,693.00	1	9	343.8
2025-Q4	13	1	3,326.00	1	8	285.5
2026-Q1	18	1	5,446.00	1	4	310.0
2026-Q2	33	8	16,448.00	0	9	327.0
2026-Q3	34	7	8,205.00	2	9	378.0
2026-Q4 *	3	0	—	0	2	23.0

Most cited CFR sections

All violations issued in the selected period. Counts combine subsections.

Section	Violations	S&S
30 CFR 75.400Accumulation of combustible materials.	49	7
30 CFR 75.1731Maintenance of belt conveyors and belt conveyor entries.	27	6
30 CFR 75.370Mine ventilation plan; submission and approval.	13	3
30 CFR 75.503Permissible electric face equipment; maintenance.	13	0
30 CFR 75.512Electric equipment; examination, testing and maintenance.	13	1
30 CFR 75.333Ventilation controls.	9	0
30 CFR 75.202Protection from falls of roof, face and ribs.	7	7
30 CFR 75.1100-2Quantity and location of firefighting equipment.	6	0
30 CFR 75.220Roof control plan.	6	3
Not reported	6	0

Safety activity

violation2026-10-075084678
75.400
violation2026-10-075084677
75.1731(a)
violation2026-10-075084044
75.606
inspection2026-10-05F010AC8
103(i) Spot Inspections · 4.5 on-site hours
inspection2026-10-01F010AC7
Regular Safety and Health Inspection · 18.5 on-site hours
inspection2026-09-16F01515C
103(i) Spot Inspections · 6.0 on-site hours
accident2026-09-04220262530027
FALL OF ROOF OR BACK · ACCIDENT ONLY
Accident narrative
A rock fall occurred on the 1 East Mains at break 19 in #2 and #3 entries. The fall is approximately 36" x 16' x 20'
inspection2026-09-04F014C8B
Non-Injury Accident Investigation · 14.5 on-site hours
violation2026-09-045082325
75.202(a) · S&S
violation2026-09-045082324
Description not reported
inspection2026-09-03F0155DA
103(i) Spot Inspections · 4.5 on-site hours
violation2026-09-025084672
75.503
violation2026-08-315084492
75.400
violation2026-08-315084491
75.333(h)
inspection2026-08-19F015156
103(i) Spot Inspections · 6.5 on-site hours
accident2026-08-16220262360022
FALL OF ROOF OR BACK · ACCIDENT ONLY
Accident narrative
A roof fall approximately 60' long x 20' wide, up to 18' thick occurred at cross cut 4 on the 2nd Primary Mains.
inspection2026-08-16F014C87
Non-Injury Accident Investigation · 11.0 on-site hours
violation2026-08-165082321
75.202(a) · S&S
violation2026-08-165082320
Description not reported
inspection2026-08-06F0155D6
103(i) Spot Inspections · 5.5 on-site hours
violation2026-08-065084332
75.342(a)(4) · $226.00 proposed
violation2026-07-305084331
75.363(b) · S&S
violation2026-07-305084330
75.1731(b) · S&S
violation2026-07-305084329
75.1731(b) · S&S
violation2026-07-305084328
75.400 · S&S

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.

EIA-923 · COAL RECEIPTS

Coal shipments and quality

Receipts reported by power plants and terminals, matched by MSHA mine ID.

REPORTED RECEIPTS · SHORT TONS50,0746 rows · 1 receiving plants

HEAT CONTENT · BTU/LB13,734Weighted by reported tons

SULFUR / ASH · % BY WEIGHT1.36 / 5.83Separate averages over measured receipts

DELIVERED COST · USD/TON125.88100.0% of reported tons have usable costs

Quarterly receipts and quality

Quarter	Short tons	Heat · Btu/lb	Sulfur %	Ash %	Delivered USD/ton
2026-Q1	26,942	13,733	1.33	6.00	125.88
2026-Q2	18,089	13,752	1.41	5.55	126.05
2026-Q3 *	5,043	13,670	1.38	5.90	125.30

Month / source	Receiving plant / supplier	Short tons	Delivered USD/ton	Heat · Btu/lb	Sulfur %	Ash %	Purchase	Transport
2026-07EIA row 11579 · preliminary	Cooper1384 · KY · BLACKHAWK COAL SALES, LLC	5,043	125.30	13,670	1.38	5.90	SpotBIT	Truck
2026-06EIA row 9685 · preliminary	Cooper1384 · KY · BLACKHAWK COAL SALES, LLC	791	125.30	13,670	1.48	5.60	SpotBIT	Truck
2026-06EIA row 9686 · preliminary	Cooper1384 · KY · BLACKHAWK COAL SALES, LLC	5,027	125.21	13,660	1.44	5.90	SpotBIT	Truck
2026-05EIA row 7873 · preliminary	Cooper1384 · KY · BLACKHAWK COAL SALES, LLC	12,271	126.44	13,795	1.39	5.40	SpotBIT	Truck
2026-02EIA row 2254 · preliminary	Cooper1384 · KY · BLACKHAWK COAL SALES, LLC	14,980	124.66	13,600	1.32	6.40	SpotBIT	Truck
2026-01EIA row 264 · preliminary	Cooper1384 · KY · BLACKHAWK COAL SALES, LLC	11,962	127.41	13,900	1.34	5.50	SpotBIT	Truck

Delivered cost includes transport and is not mine revenue. Missing prices remain blank. * Fewer than three months are published in the selected quarter. Receipts reflect the months EIA has published; an unfinished quarter is not comparable with a full quarter. Portfolio matches use current ownership.

Coverage, sources and calculations

Reported coal receipts at EIA-923 power plants/terminals; this is not a census of mine shipments, exports or metallurgical sales.
Matches use only the published MSHA ID, normalized to seven digits. Unidentified mine origins remain in the source table but are not assigned to a mine.
Portfolio attribution uses current MSHA ownership, not ownership at the shipment date. Receipts and production can differ because of timing, stocks and coverage.
Quality means are weighted by positive reported tons with that measurement. Delivered cost uses only rows with published cost, positive heat and positive tons; missing/withheld costs are never zero-filled.
USD/ton = (cents/MMBtu ÷ 100) × MMBtu/ton. This is plant delivered cost, not mine sales price or revenue.
Receipt month is as published, including records supplied by annual respondents. Recent months are preliminary and subject to revision. Missing rows do not prove zero shipments.

Imported releases start 2008-01. This window includes 12 published months. EIA releases · Survey instructions

2026 · preliminary · EIA923_Schedules_2_3_4_5_M_07_2026_21SEP2026.xlsx · Page 5 Fuel Receipts and Costs
2025 · final · EIA923_Schedules_2_3_4_5_M_12_2025_Final.xlsx · Page 5 Fuel Receipts and Costs

EIA ANNUAL COAL REPORT · 2024

Coal prices and estimated revenue

Annual county prices and a production-based allocation of county coal sales.

FOB PRICE BENCHMARK · USD/TON98.19Published county average

ESTIMATED SALES · SHORT TONS267,894Allocated from published county sales

ESTIMATED COAL REVENUE · USD26,304,532Covered mines only · not reported revenue

ANNUAL PRODUCTION COVERED100.0%1 of 1 producing annual mine records

The estimate assumes each eligible mine receives its county-average price and shares county sales in proportion to production. Actual sales and prices can differ substantially. All producing annual records in this selection have estimates. Annual price data uses a separate window from the MSHA charts.

Mine / county	Annual production · tons	County FOB · USD/ton	Est. sales · tons	Est. coal revenue · USD	Basis / availability
No. 771509636 · Perry, Kentucky	226,889	98.19	267,894	26,304,532	County allocation estimate15.67% of eligible county production4 eligible mines / 4 sales respondents

Method, assumptions and source records

This is an annual county-sales allocation, not reported mine or company revenue. Currency is nominal USD in the source year; quantities are short tons.
Mine share = same-year annual mine production / eligible same-county production. Estimated sales = published county sales × share. Estimated coal revenue = estimated sales × published county average FOB price.
The model assumes eligible mines share county sales in proportion to production and receive the county-average price. Matching mine counts is a check, not proof of identical respondents. Mine quality, contracts and sales timing can differ substantially. No statistical confidence interval is implied.
FOB excludes transport and insurance. EIA-923 delivered costs do not enter this model. No grade premium, state/national fallback, quarterly apportionment or carry-forward to a later year is applied.
Eligibility follows the source's production threshold and excludes preparation-only and refuse operations. Withheld values, inconsistent county counts and missing/ambiguous locations produce no estimate.
County sales are published in thousands of tons and prices to cents. Calculations retain precision, but the inputs are rounded and the allocation is approximate.
Portfolio attribution uses current MSHA ownership, not ownership during the sales year. Covered-mine sums exclude unavailable estimates and must not be read as whole-company revenue. Coverage denominators use the annual EIA mine-production release.

Sales-reporting threshold: 50,000 short tons per mine in 2024. Withheld sales or prices stay unavailable.

EIA Table 30 · county sales and FOB prices · EIA annual mine production · Release index

Annual report released November 19, 2025. Method: county-sales-allocation-v1. JSON and CSV preserve source row numbers and file checksums.

OWNERSHIP

Operator and controller history

Current ownership comes from MSHA Mines. Historical start and end dates come from MSHA Controller and Operator History.

CURRENT HIERARCHYSev.en Global Investments a.s. → Blue Diamond Coal Co → NO. 77

HISTORY RECORDS514 relationships

INTERVAL CHECKPASScontroller/operator overlap

Jun 1, 2020—CURRENT / OPEN

Sev.en Global Investments a.s.controlsBlue Diamond Coal CooperatesNO. 77

msha-controller-operator-history · controller/operator co-tenure derived on mine 1509636

Sep 4, 2014—May 31, 2020

Blackhawk Mining LLCcontrolsBlue Diamond Coal CooperatesNO. 77

msha-controller-operator-history · controller/operator co-tenure derived on mine 1509636

Jun 2, 2000—Sep 3, 2014

James River Coal CompanycontrolsBlue Diamond Coal CompanyoperatesNO. 77

msha-controller-operator-history · controller/operator co-tenure derived on mine 1509636

Jun 4, 1993—Jun 1, 2000

Allen G Stump et alcontrolsAltec Energy IncoperatesNO. 77

msha-controller-operator-history · controller/operator co-tenure derived on mine 1509636

Jan 1, 1976—Jun 3, 1993

Blue Diamond Coal CompanycontrolsBlue Diamond Coal CompanyoperatesNO. 77

msha-controller-operator-history · controller/operator co-tenure derived on mine 1509636

Other 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

199 historical accident/injury rows; 1 coded fatalities and 3,563 lost days across the published record.

ACCIDENT + INJURY RECORD26 since 2021

accidentsmine-production-quarterly

02 / COMPLIANCEwatch

Violations and penalties

5,633 violation rows across the full record; 1,722 carry an S&S flag and $3,728,708 appears in current assessed amounts.

ENFORCEMENT ACTIVITY1,257 since 2021

inspectionsviolationsassessed-violationsorders-107a

03 / HEALTHwatch

Occupational health samples

6,634 coal dust; 444 coal quartz; 582 noise. 0 personal-sample rows have a published C/E ratio above 1; 79 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 EXPOSURE8K samples

coal-dust-samplesquartz-samplesnoise-samples

04 / PRODUCTIONcontext

Quarterly production and employment

33K employee hours and 56 summed average employees across reported subunits in the latest published quarter.

2026-Q272K tons

mine-production-quarterlymine-production-yearly

05 / LEGALwatch

Contests, conferences and decisions

1,182 contested-violation rows, 1,201 civil-penalty docket/decision rows, and 283 conference records linked by issuance number.

POST-ISSUANCE LIFECYCLE2,666 linked rows

conferencescontested-violationscivil-penalty-dockets-decisions

06 / 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 CONTEXT20 linked entities

contractor-production-quarterlycontractor-production-yearlyaccidentsviolations

07 / INSPECTIONScontext

Inspections

661 inspection events and 49K published inspection hours across the historical record.

OVERSIGHT COVERAGE216 since 2021

inspectionsviolations

HEALTH SAMPLING

Silica and quartz

Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 2026. 444 silica records across the mine’s published history.

Matching records1414 coal · 0 personal · 0 area

Sample status14 not voided0 voided · 0 status not reported

Mean coal quartz concentration32.57 µg/m³14 eligible measurements · 0 missing concentration

Coal quartz concentration

Quarterly mean · µg/m³ · not-voided samples

2026-Q154.254 measurements
2026-Q222.176 measurements
2026-Q326.54 measurements
2026-Q4*—0 measurements

— 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.

2026 · Jan 28, 2026–Aug 5, 2026
Date / sample	Dataset / analyte	Occupation / area	Measurement	Sample status	Published action
Aug 5, 202658541067 / lab 2026032776	Coal quartzQuartz	CONTINUOUS MINER OPERATORDESIGNATED OCCUPATION	75 µg/m³9.8% quartz	Not voided	Not reported
Jul 16, 202658541204 / lab 2026029816	Coal quartzQuartz	OCCUPATION CODE NOT FOUNDDESIGNATED AREA	7 µg/m³1.2% quartz	Not voided	Not reported
Jul 16, 202658540944 / lab 2026029813	Coal quartzQuartz	ROOF BOLTER (TWIN HEAD) (RETURN SIDE)NON DESIGNATED OCCUPATION	7 µg/m³6.2% quartz	Not voided	Not reported
Jul 16, 202658540965 / lab 2026029812	Coal quartzQuartz	ROOF BOLTER (TWIN HEAD) (RETURN SIDE)NON DESIGNATED OCCUPATION	17 µg/m³8% quartz	Not voided	Not reported
May 20, 202658544995 / lab 2026021600	Coal quartzQuartz	ROOF BOLTER (TWIN HEAD) (RETURN SIDE)NON DESIGNATED OCCUPATION	62 µg/m³7.6% quartz	Not voided	Not reported
Apr 27, 202658544804 / lab 2026018471	Coal quartzQuartz	OCCUPATION CODE NOT FOUNDDESIGNATED AREA	4 µg/m³1.4% quartz	Not voided	Not reported
Apr 27, 202658544990 / lab 2026018473	Coal quartzQuartz	OCCUPATION CODE NOT FOUNDDESIGNATED AREA	2 µg/m³1.4% quartz	Not voided	Not reported
Apr 23, 202658544776 / lab 2026018477	Coal quartzQuartz	ROOF BOLTER (TWIN HEAD) (RETURN SIDE)NON DESIGNATED OCCUPATION	16 µg/m³6.1% quartz	Not voided	Not reported
Apr 23, 202658544991 / lab 2026018480	Coal quartzQuartz	CONTINUOUS MINER OPERATORDESIGNATED OCCUPATION	32 µg/m³6.9% quartz	Not voided	Not reported
Apr 23, 202658544987 / lab 2026018478	Coal quartzQuartz	OCCUPATION CODE NOT FOUNDDESIGNATED AREA	17 µg/m³5.1% quartz	Not voided	Not reported
Jan 28, 202658538007 / lab 2026003954	Coal quartzQuartz	CONTINUOUS MINER OPERATORDESIGNATED OCCUPATION	49 µg/m³6.6% quartz	Not voided	Not reported
Jan 28, 202658538068 / lab 2026003949	Coal quartzQuartz	ROOF BOLTER (TWIN HEAD) (RETURN SIDE)NON DESIGNATED OCCUPATION	11 µg/m³4.3% quartz	Not voided	Not reported
Jan 28, 202658538054 / lab 2026003950	Coal quartzQuartz	OCCUPATION CODE NOT FOUNDDESIGNATED AREA	65 µg/m³6.9% quartz	Not voided	Not reported
Jan 28, 202658538008 / lab 2026003953	Coal quartzQuartz	ROOF BOLTER (TWIN HEAD) (RETURN SIDE)NON DESIGNATED OCCUPATION	92 µg/m³8.5% quartz	Not voided	Not reported

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.

EIA MINE CONTEXT2024 record

ANNUAL COAL PRODUCTION226,889short tons

LABOR HOURS: 152,503
AVG EMPLOYEES: 65
SUPPLY REGION: Appalachia Central
UNION: No union code published
OPERATION: Mine only
COMPANY TYPE: Operating Subsidiary

1 published EIA row aggregated under this MSHA ID. Components remain available in JSON.

TITLE 30 CROSSWALKCurrent through 2026-08-19

30 CFR 75.400Accumulation of combustible materials.2 recent rows ↗30 CFR 75.1731Maintenance of belt conveyors and belt conveyor entries.1 recent row ↗30 CFR 75.606Protection of trailing cables.1 recent row ↗30 CFR 75.202Protection from falls of roof, face and ribs.2 recent rows ↗30 CFR 75.503Permissible electric face equipment; maintenance.1 recent row ↗30 CFR 75.333Ventilation controls.1 recent row ↗30 CFR 75.342Methane monitors.1 recent row ↗30 CFR 75.363Hazardous conditions and violations of mandatory health or safety standards; posting, correcting, and recording.1 recent row ↗

RECENT PUBLIC RECORDS

Recent violations and samples

Latest records retained for inspection; aggregates above use the full source history.

VIOLATIONS12 latest shown

Oct 7, 2026508467875.400Citation

Oct 7, 2026508467775.1731(a)Citation

Oct 7, 2026508404475.606Citation

Sep 4, 2026508232575.202(a)S&S

Sep 4, 20265082324—Order

Sep 2, 2026508467275.503Citation

Aug 31, 2026508449275.400Citation

Aug 31, 2026508449175.333(h)Citation

OTHER HEALTH SAMPLES8 latest shown

Coal dust, noise and other contaminants. Silica records above ↑

Oct 7, 2026

Coal dustCONTINUOUS MINER OPERATOR

0 mg/m³Not voided

Oct 7, 2026

Coal dustCONTINUOUS MINER OPERATOR

.562 mg/m³Not voided

Sep 2, 2026