MINE DETAILS

MINE NO. 44

ActiveUndergroundCoal (Bituminous)

MSHA MINE ID4609523

OPERATORTwin State Mining, Inc.

CONTROLLERCleveland-Cliffs Inc

LOCATIONMcdowell, WV

PUBLIC RECORD5,448 linked rows

LOCATION

Mine location

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

Mine coordinates

MINE NO. 4437.38667, -81.44917Open map ↗

Quarterly trends

2025 Q1 – 2026 Q4

JSON CSV

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

Coal production

450,462

reported short tons

2025 Q172,136
2025 Q275,554
2025 Q374,482
2025 Q471,655
2026 Q175,081
2026 Q281,554
2026 Q3—No usable value reported
2026 Q4 *—No usable value reported

Hours worked

408,154

reported employee hours

2025 Q167,567
2025 Q267,060
2025 Q368,826
2025 Q465,976
2026 Q170,522
2026 Q268,203
2026 Q3—No usable value reported
2026 Q4 *—No usable value reported

Tons per hour

1.10

production ÷ hours worked

2025 Q11.07
2025 Q21.13
2025 Q31.08
2025 Q41.09
2026 Q11.06
2026 Q21.20
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 MINE NO. 44
Quarter	Coal (short tons)	Hours worked	Tons / hour	Avg. employees	Coverage
2025 Q1	72,136	67,567	1.07	119	1/1 mines reporting
2025 Q2	75,554	67,060	1.13	117	1/1 mines reporting
2025 Q3	74,482	68,826	1.08	119	1/1 mines reporting
2025 Q4	71,655	65,976	1.09	120	1/1 mines reporting
2026 Q1	75,081	70,522	1.06	118	1/1 mines reporting
2026 Q2	81,554	68,203	1.20	120	1/1 mines reporting
2026 Q3	—	—	—	—	No report
2026 Q4	—	—	—	—	No report

Safety and enforcement

2025-01-01 – 2026-10-13

Violations

278

47 significant & substantial (S&S)

2025 Q148
2025 Q246
2025 Q336
2025 Q445
2026 Q138
2026 Q246
2026 Q316
2026 Q4 *3

Accident records

0 records classified as fatality

2025 Q10
2025 Q20
2025 Q30
2025 Q40
2026 Q11
2026 Q20
2026 Q30
2026 Q4 *0

Proposed penalties · USD

205,055.00

257 of 278 violations with amounts

2025 Q123,311
2025 Q220,058
2025 Q348,717
2025 Q461,250
2026 Q123,436
2026 Q228,074
2026 Q3209
2026 Q4 *—

On-site inspection hours

1,460.00

24 inspections · 24 with hours

2025 Q1192.00
2025 Q2209.00
2025 Q3188.50
2025 Q4216.25
2026 Q1200.00
2026 Q2226.75
2026 Q3209.75
2026 Q4 *17.75

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	48	7	23,311.00	0	2	192.0
2025-Q2	46	6	20,058.00	0	4	209.0
2025-Q3	36	6	48,717.00	0	3	188.5
2025-Q4	45	17	61,250.00	0	4	216.3
2026-Q1	38	5	23,436.00	1	5	200.0
2026-Q2	46	4	28,074.00	0	4	226.8
2026-Q3	16	2	209.00	0	1	209.8
2026-Q4 *	3	0	—	0	1	17.8

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.	29	1
30 CFR 75.370Mine ventilation plan; submission and approval.	28	6
30 CFR 75.512Electric equipment; examination, testing and maintenance.	22	3
30 CFR 75.503Permissible electric face equipment; maintenance.	20	0
30 CFR 75.220Roof control plan.	17	3
30 CFR 75.1731Maintenance of belt conveyors and belt conveyor entries.	13	2
30 CFR 75.517Power wires and cables; insulation and protection.	10	8
30 CFR 75.1725Machinery and equipment; operation and maintenance.	9	5
30 CFR 75.604Permanent splicing of trailing cables.	9	6
30 CFR 75.1100-3Condition and examination of firefighting equipment.	7	0

Safety activity

violation2026-10-075026597
75.512
violation2026-10-075026596
75.370(a)(1)
violation2026-10-055026595
75.380(d)(7)(vii)(A)
inspection2026-10-01F00ACA7
Regular Safety and Health Inspection · 17.8 on-site hours
violation2026-09-155029405
75.512
violation2026-09-155029404
75.701
violation2026-09-155029403
75.503
violation2026-09-155029402
72.630(b)
violation2026-09-155029401
75.503
violation2026-09-115024920
75.604(b)
violation2026-09-115024919
75.400
violation2026-09-115024918
75.503
violation2026-09-025131416
77.1607(cc)
violation2026-09-025131415
75.1712-3(a)
violation2026-09-025131414
75.1103-5(a)
violation2026-08-195131410
75.370(a)(1)
violation2026-08-185098003
75.512 · S&S
violation2026-08-185097333
75.1722(a) · S&S
violation2026-08-185097332
72.630(b)
violation2026-07-155024909
75.1100-3 · $209.00 proposed
inspection2026-07-07F0111BC
Regular Safety and Health Inspection · 209.8 on-site hours
inspection2026-06-30F020DB4
Non-Injury Accident Investigation · 7.3 on-site hours
violation2026-06-305099390
Description not reported
inspection2026-06-12F020DB1
Spot Inspection · 6.0 on-site hours
inspection2026-05-27F00C0B1
Spot Inspection · 5.0 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.

EIA-923 · COAL RECEIPTS

Coal shipments and quality

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

REPORTED RECEIPTS · SHORT TONS—0 rows · 0 receiving plants

HEAT CONTENT · BTU/LB—Weighted by reported tons

SULFUR / ASH · % BY WEIGHT— / —Separate averages over measured receipts

DELIVERED COST · USD/TON—No price coverage

No receipts matched this mine in the selected period. EIA-923 does not cover all mine sales, exports or metallurgical coal shipments.

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/TON150.07Published county average

ESTIMATED SALES · SHORT TONS239,751Allocated from published county sales

ESTIMATED COAL REVENUE · USD35,979,472Covered 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
Mine No. 444609523 · Mcdowell, West Virginia	237,341	150.07	239,751	35,979,472	County allocation estimate12.50% of eligible county production10 eligible mines / 10 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 HIERARCHYCleveland-Cliffs Inc → Twin State Mining, Inc. → MINE NO. 44

HISTORY RECORDS613 relationships

INTERVAL CHECK3 REVIEWcontroller/operator overlap

Nov 18, 2021—Dec 4, 2008

Gregory Jessee et alcontrolsTwin State Mining, Inc.operatesMINE NO. 44

msha-controller-operator-history · controller/operator co-tenure derived on mine 4609523

Nov 18, 2021—Dec 8, 2020

ArcelorMittalcontrolsTwin State Mining, Inc.operatesMINE NO. 44

msha-controller-operator-history · controller/operator co-tenure derived on mine 4609523

Nov 18, 2021—CURRENT / OPEN

Cleveland-Cliffs InccontrolsTwin State Mining, Inc.operatesMINE NO. 44

msha-controller-operator-history · controller/operator co-tenure derived on mine 4609523

Dec 9, 2020—Nov 17, 2021

Cleveland-Cliffs InccontrolsXMV, Inc.operatesMINE NO. 44

msha-controller-operator-history · controller/operator co-tenure derived on mine 4609523

Dec 16, 2016—Dec 8, 2020

ArcelorMittalcontrolsXMV, Inc.operatesMINE NO. 44

msha-controller-operator-history · controller/operator co-tenure derived on mine 4609523

Dec 16, 2016—Oct 19, 2008

William G SkewescontrolsXMV, Inc.operatesMINE NO. 44

msha-controller-operator-history · controller/operator co-tenure derived on mine 4609523

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

6 historical accident/injury rows; 0 coded fatalities and 133 lost days across the published record.

ACCIDENT + INJURY RECORD6 since 2021

accidentsmine-production-quarterly

02 / COMPLIANCEwatch

Violations and penalties

523 violation rows across the full record; 97 carry an S&S flag and $304,361 appears in current assessed amounts.

ENFORCEMENT ACTIVITY523 since 2021

inspectionsviolationsassessed-violationsorders-107a

03 / HEALTHwatch

Occupational health samples

3,661 coal dust; 156 coal quartz; 114 noise. 0 personal-sample rows have a published C/E ratio above 1; 8 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 EXPOSURE4K samples

coal-dust-samplesquartz-samplesnoise-samples

04 / PRODUCTIONcontext

Quarterly production and employment

68K employee hours and 120 summed average employees across reported subunits in the latest published quarter.

2026-Q282K tons

mine-production-quarterlymine-production-yearly

05 / LEGALwatch

Contests, conferences and decisions

7 contested-violation rows, 7 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.

POST-ISSUANCE LIFECYCLE14 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 CONTEXT3 linked entities

contractor-production-quarterlycontractor-production-yearlyaccidentsviolations

07 / INSPECTIONScontext

Inspections

50 inspection events and 4K published inspection hours across the historical record.

OVERSIGHT COVERAGE50 since 2021

inspectionsviolations

HEALTH SAMPLING

Silica and quartz

Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 2026. 156 silica records across the mine’s published history.

Matching records3636 coal · 0 personal · 0 area

Sample status36 not voided0 voided · 0 status not reported

Mean coal quartz concentration16.44 µg/m³36 eligible measurements · 0 missing concentration

Coal quartz concentration

Quarterly mean · µg/m³ · not-voided samples

2026-Q115.9212 measurements
2026-Q221.7311 measurements
2026-Q312.4613 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 14, 2026–Sep 3, 2026
Date / sample	Dataset / analyte	Occupation / area	Measurement	Sample status	Published action
Sep 3, 202658593551 / lab 2026036591	Coal quartzQuartz	DISPATCHERPART 90 MINER	3 µg/m³1.4% quartz	Not voided	Not reported
Aug 19, 202658596138 / lab 2026034550	Coal quartzQuartz	ROOF BOLTER (TWIN HEAD) (RETURN SIDE)NON DESIGNATED OCCUPATION	18 µg/m³5.2% quartz	Not voided	Not reported
Aug 19, 202658575367 / lab 2026034408	Coal quartzQuartz	ROOF BOLTER (TWIN HEAD) (RETURN SIDE)NON DESIGNATED OCCUPATION	4 µg/m³1.5% quartz	Not voided	Not reported
Aug 19, 202658575549 / lab 2026034410	Coal quartzQuartz	CONTINUOUS MINER OPERATORDESIGNATED OCCUPATION	11 µg/m³2.8% quartz	Not voided	Not reported
Aug 19, 202658596023 / lab 2026034549	Coal quartzQuartz	SHUTTLE CAR OPERATOR (STANDARD SIDE)NON DESIGNATED OCCUPATION	13 µg/m³5.6% quartz	Not voided	Not reported
Aug 19, 202658575291 / lab 2026034414	Coal quartzQuartz	SHUTTLE CAR OPERATOR (STANDARD SIDE)NON DESIGNATED OCCUPATION	17 µg/m³2.9% quartz	Not voided	Not reported
Aug 19, 202658596028 / lab 2026034548	Coal quartzQuartz	CONTINUOUS MINER OPERATORDESIGNATED OCCUPATION	37 µg/m³8% quartz	Not voided	Not reported
Aug 18, 202658595900 / lab 2026034123	Coal quartzQuartz	CONTINUOUS MINER OPERATORDESIGNATED OCCUPATION	18 µg/m³4.2% quartz	Not voided	Not reported
Aug 18, 202658595756 / lab 2026034125	Coal quartzQuartz	SHUTTLE CAR OPERATOR (STANDARD SIDE)NON DESIGNATED OCCUPATION	5 µg/m³4% quartz	Not voided	Not reported
Aug 18, 202658595945 / lab 2026034131	Coal quartzQuartz	SHUTTLE CAR OPERATOR (STANDARD SIDE)NON DESIGNATED OCCUPATION	7 µg/m³5.4% quartz	Not voided	Not reported
Aug 18, 202658596142 / lab 2026034136	Coal quartzQuartz	CONTINUOUS MINER OPERATORDESIGNATED OCCUPATION	8 µg/m³4.1% quartz	Not voided	Not reported
Aug 18, 202658596034 / lab 2026034133	Coal quartzQuartz	ROOF BOLTER (TWIN HEAD) (RETURN SIDE)NON DESIGNATED OCCUPATION	6 µg/m³3.3% quartz	Not voided	Not reported
Aug 18, 202658595881 / lab 2026034128	Coal quartzQuartz	ROOF BOLTER (TWIN HEAD) (RETURN SIDE)NON DESIGNATED OCCUPATION	15 µg/m³5.6% quartz	Not voided	Not reported
Apr 29, 202658593741 / lab 2026018291	Coal quartzQuartz	DISPATCHERPART 90 MINER	5 µg/m³2.2% quartz	Not voided	Not reported
Apr 20, 202658574464 / lab 2026016824	Coal quartzQuartz	CONTINUOUS MINER OPERATORDESIGNATED OCCUPATION	19 µg/m³6.8% quartz	Not voided	Not reported
Apr 20, 202658574536 / lab 2026016813	Coal quartzQuartz	CONTINUOUS MINER OPERATORDESIGNATED OCCUPATION	32 µg/m³8% quartz	Not voided	Not reported
Apr 20, 202658574433 / lab 2026016815	Coal quartzQuartz	ROOF BOLTER (TWIN HEAD) (RETURN SIDE)NON DESIGNATED OCCUPATION	23 µg/m³7.4% quartz	Not voided	Not reported
Apr 20, 202658574420 / lab 2026016818	Coal quartzQuartz	SHUTTLE CAR OPERATOR (STANDARD SIDE)NON DESIGNATED OCCUPATION	11 µg/m³5.8% quartz	Not voided	Not reported
Apr 20, 202658574432 / lab 2026016821	Coal quartzQuartz	ROOF BOLTER (TWIN HEAD) (RETURN SIDE)NON DESIGNATED OCCUPATION	23 µg/m³7.9% quartz	Not voided	Not reported
Apr 13, 202658574254 / lab 2026015573	Coal quartzQuartz	CONTINUOUS MINER OPERATORDESIGNATED OCCUPATION	28 µg/m³6.5% 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 PRODUCTION237,341short tons

LABOR HOURS: 274,083
AVG EMPLOYEES: 121
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 75.512Electric equipment; examination, testing and maintenance.2 recent rows ↗30 CFR 75.370Mine ventilation plan; submission and approval.1 recent row ↗30 CFR 75.380Escapeways; bituminous and lignite mines.1 recent row ↗30 CFR 75.701Grounding metallic frames, casings, and other enclosures of electric equipment.1 recent row ↗30 CFR 75.503Permissible electric face equipment; maintenance.3 recent rows ↗30 CFR 72.630Drill dust control at underground areas of underground mines.1 recent row ↗30 CFR 75.604Permanent splicing of trailing cables.1 recent row ↗30 CFR 75.400Accumulation of combustible materials.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, 2026502659775.512Citation

Oct 7, 2026502659675.370(a)(1)Citation

Oct 5, 2026502659575.380(d)(7)(vii)(A)Citation

Sep 15, 2026502940575.512Citation

Sep 15, 2026502940475.701Citation

Sep 15, 2026502940375.503Citation

Sep 15, 2026502940272.630(b)Citation

Sep 15, 2026502940175.503Citation

OTHER HEALTH SAMPLES8 latest shown

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

Oct 7, 2026