MSHA DATABASEMSHA records · 17 contributing sources · snapshot Oct 13, 2026

MINE DETAILS

Cumberland Mine

ActiveUndergroundCoal (Bituminous)
MSHA MINE ID3605018
LOCATIONGreene, PA
PUBLIC RECORD63,367 linked rows

LOCATION

Mine location

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

Mine coordinates

2025-01-01 – 2026-10-13Applies to production, safety and portfolio metrics. Silica samples have separate filters.

Violations

968

68 significant & substantial (S&S)

  1. 2025 Q1130
  2. 2025 Q2105
  3. 2025 Q3140
  4. 2025 Q4140
  5. 2026 Q1180
  6. 2026 Q2137
  7. 2026 Q3125
  8. 2026 Q4 *11

Accident records

52

0 records classified as fatality

  1. 2025 Q17
  2. 2025 Q211
  3. 2025 Q36
  4. 2025 Q46
  5. 2026 Q14
  6. 2026 Q29
  7. 2026 Q39
  8. 2026 Q4 *0

Proposed penalties · USD

508,078.00

885 of 968 violations with amounts

  1. 2025 Q197,023
  2. 2025 Q265,844
  3. 2025 Q390,409
  4. 2025 Q492,563
  5. 2026 Q1102,152
  6. 2026 Q243,538
  7. 2026 Q316,549
  8. 2026 Q4 *—

On-site inspection hours

6,541.75

242 inspections · 242 with hours

  1. 2025 Q1824.75
  2. 2025 Q2559.75
  3. 2025 Q3832.25
  4. 2025 Q4757.25
  5. 2026 Q11,340.50
  6. 2026 Q21,104.50
  7. 2026 Q31,040.25
  8. 2026 Q4 *82.50
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q11301097,023.007057824.8
2025-Q2105665,844.0011027559.8
2025-Q31401190,409.006037832.3
2025-Q41401392,563.006027757.3
2026-Q118010102,152.0040261,340.5
2026-Q21371143,538.0090341,104.5
2026-Q3125616,549.0090291,040.3
2026-Q4 *111—00582.5

Most cited CFR sections

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

Safety activity

  1. inspectionF03D999

    103(i) Spot Inspections · 6.0 on-site hours

  2. violation5151515

    75.202(a)

  3. violation5151514

    75.1107-1(a)(3)(iii)

  4. violation5151513

    75.512 · S&S

  5. violation5151512

    75.1403

  6. violation5151511

    75.333(h)

  7. violation5150003

    75.321(a)(2)

  8. violation5151846

    75.220(a)(1)

  9. violation5151845

    75.211(d)

  10. violation5151510

    75.400

  11. inspectionF03D998

    103(i) Spot Inspections · 6.5 on-site hours

  12. inspectionF012937

    Roof Control Technical Investigation · 0.0 on-site hours

  13. violation5151844

    75.342(a)(4)

  14. inspectionF03D997

    103 (g) Written Notification Hazard Complaint Inspectio · 8.0 on-site hours

  15. inspectionF00BAC6

    Regular Safety and Health Inspection · 62.0 on-site hours

  16. violation9582322

    50.10(c)

  17. inspectionF037950

    Verbal Hazard Complaint Inspections · 9.3 on-site hours

  18. inspectionF033FBC

    103(i) Spot Inspections · 7.0 on-site hours

  19. violation5120068

    75.400

  20. violation5151196

    75.220(a)(1)

  21. inspectionF04847E

    103(i) Spot Inspections · 6.0 on-site hours

  22. inspectionF033FBB

    Verbal Hazard Complaint Inspections · 9.0 on-site hours

  23. violation5120067

    75.203(b)

  24. violation5120066

    75.1725(a)

  25. inspectionF04847D

    103(i) Spot Inspections · 7.0 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.

Latest EIA month: 2026-07Source checked 2026-10-13 · publication lag differs from MSHA.

REPORTED RECEIPTS · SHORT TONS5,993,740194 rows · 16 receiving plants
HEAT CONTENT · BTU/LB12,835Weighted by reported tons
SULFUR / ASH · % BY WEIGHT3.27 / 8.42Separate averages over measured receipts
DELIVERED COST · USD/TON75.6468.8% of reported tons have usable costs
Quarterly receipts and quality
QuarterShort tonsHeat · Btu/lbSulfur %Ash %Delivered USD/ton
2025-Q3 *956,25012,7773.398.8875.31
2025-Q41,505,95612,8873.328.2872.83
2026-Q11,502,19312,8453.108.3173.60
2026-Q21,548,86012,7963.288.3979.97
2026-Q3 *480,48112,8793.418.3379.34
Month / sourceReceiving plant / supplierShort tonsDelivered USD/tonHeat · Btu/lbSulfur %Ash %PurchaseTransport
2026-07EIA row 11405 · preliminaryStanton Energy Center564 · FL · CRIMSON COAL50,107100.7812,9203.278.40SpotBITRail
2026-07EIA row 11549 · preliminaryGhent1356 · KY · IRON COAL SALES,LLC18,73563.4612,8513.338.40ContractBITRiver
2026-07EIA row 11723 · preliminaryRoxboro2712 · NC · IRON COAL SALES,LLC24,64195.5112,8863.428.40ContractBITRail
2026-07EIA row 11725 · preliminaryRoxboro2712 · NC · IRON COAL SALES,LLC12,43198.5012,8993.508.30ContractBITRail
2026-07EIA row 11767 · preliminaryCardinal2828 · OH · IRON COAL SALES,LLC19,511—Not published12,8573.508.30ContractBITRiver
2026-07EIA row 11768 · preliminaryCardinal2828 · OH · IRON COAL SALES,LLC17,850—Not published12,8553.448.30ContractBITRiver
2026-07EIA row 11778 · preliminaryMiami Fort2832 · OH · IRON COAL SALES,LLC17,211—Not published12,9083.248.20SpotBITRiver
2026-07EIA row 11789 · preliminaryKyger Creek2876 · OH · IRON COAL SALES,LLC18,81680.6812,8713.578.20ContractBITRiver
2026-07EIA row 11928 · preliminaryJohn E Amos3935 · WV · IRON COAL SALES, LLC119,72377.2512,8803.368.45ContractBITRail
2026-07EIA row 11934 · preliminaryFirstEnergy Fort Martin Power Station3943 · WV · IRON COAL SALES, LLC38,10564.5012,8693.458.30ContractBITRiver
2026-07EIA row 11938 · preliminaryFirstEnergy Fort Martin Power Station3943 · WV · IRON COAL SALES,LLC28,38766.4412,8573.518.30ContractBITRiver
2026-07EIA row 12009 · preliminaryEast Bend6018 · KY · IRON COAL SALES,LLC6,31977.9012,8723.038.40ContractBITRiver
2026-07EIA row 12011 · preliminaryEast Bend6018 · KY · IRON COAL SALES,LLC23,19180.3612,8953.448.10SpotBITRiver
2026-07EIA row 12021 · preliminaryH L Spurlock6041 · KY · IRON COAL SALES,LLC36,14171.8612,8653.438.30ContractBITRiver
2026-07EIA row 12555 · preliminaryKeystone Fuels Terminal8845 · PA · IRON COAL SALES,LLC9,744—Not published12,8733.538.30ContractBITRiver / Truck
2026-07EIA row 12560 · preliminaryConemaugh Fuels LLC -Terminal8846 · PA · IRON COAL SALES,LLC4,037—Not published12,8563.428.40ContractBITRiver / Truck
2026-07EIA row 13114 · preliminaryLongview Power Plant56671 · WV · IRON COAL SALES,LLC35,532—Not published12,8803.578.20SpotBITRiver / Truck
2026-06EIA row 9509 · preliminaryStanton Energy Center564 · FL · CRIMSON COAL12,48399.0712,9003.268.40SpotBITRail
2026-06EIA row 9659 · preliminaryGhent1356 · KY · IRON COAL SALES,LLC51,51962.9312,8913.298.00ContractBITRiver
2026-06EIA row 9828 · preliminaryRoxboro2712 · NC · IRON COAL SALES,LLC12,44591.7212,8283.258.80ContractBITRail
2026-06EIA row 9877 · preliminaryCardinal2828 · OH · IRON COAL SALES,LLC22,949—Not published12,8623.298.30ContractBITRiver
2026-06EIA row 9878 · preliminaryCardinal2828 · OH · IRON COAL SALES,LLC19,569—Not published12,8573.338.30ContractBITRiver
2026-06EIA row 9890 · preliminaryMiami Fort2832 · OH · CAMELOT1,798—Not published13,4400.926.90SpotBITRiver
2026-06EIA row 9896 · preliminaryMiami Fort2832 · OH · IRON COAL SALES,LLC49,779—Not published12,8363.308.40SpotBITRiver
2026-06EIA row 9897 · preliminaryKyger Creek2876 · OH · IRON COAL SALES,LLC27,94978.0612,8563.398.30ContractBITRiver
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

Latest priced year: 2024Source checked 2026-10-13. Prices apply only to their calendar year.

FOB PRICE BENCHMARK · USD/TON—Published county average
ESTIMATED SALES · SHORT TONS—Allocated from published county sales
ESTIMATED COAL REVENUE · USD—Covered mines only · not reported revenue
ANNUAL PRODUCTION COVERED0.0%0 of 1 producing annual mine records
Mine / countyAnnual production · tonsCounty FOB · USD/tonEst. sales · tonsEst. coal revenue · USDBasis / availability
Cumberland Mine3605018 · Greene, Pennsylvania5,153,309———County sales or price not published3 eligible mines / 3 sales respondents
Method, assumptions and source records
  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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 HIERARCHYIron Senergy Holding LLC → Iron Cumberland LLC → Cumberland Mine
HISTORY RECORDS718 relationships
INTERVAL CHECKPASScontroller/operator overlap
—

Iron Senergy Holding LLCcontrolsIron Cumberland LLCoperatesCumberland Mine

msha-controller-operator-history · controller/operator co-tenure derived on mine 3605018
—

Alpha Metallurgical Resources InccontrolsIron Cumberland LLCoperatesCumberland Mine

msha-controller-operator-history · controller/operator co-tenure derived on mine 3605018
—

Alpha Natural Resources, Inc.controlsCumberland Coal Resources LPoperatesCumberland Mine

msha-controller-operator-history · controller/operator co-tenure derived on mine 3605018
—

Foundation Coal CorporationcontrolsCumberland Coal Resources LPoperatesCumberland Mine

msha-controller-operator-history · controller/operator co-tenure derived on mine 3605018
—

Rag AktiengesellschaftcontrolsCumberland Coal Resources LPoperatesCumberland Mine

msha-controller-operator-history · controller/operator co-tenure derived on mine 3605018
—

Cyprus Amax Minerals CompanycontrolsCyprus Cumberland Resources CorpoperatesCumberland Mine

msha-controller-operator-history · controller/operator co-tenure derived on mine 3605018
—

Usx CorpcontrolsUnited States Steel Mining Company IncoperatesCumberland Mine

msha-controller-operator-history · controller/operator co-tenure derived on mine 3605018
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

1,537 historical accident/injury rows; 0 coded fatalities and 79,046 lost days across the published record.

ACCIDENT + INJURY RECORD260 since 2021
accidentsmine-production-quarterly
02 / COMPLIANCEwatch

Violations and penalties

8,713 violation rows across the full record; 2,061 carry an S&S flag and $4,998,276 appears in current assessed amounts.

ENFORCEMENT ACTIVITY2,943 since 2021
inspectionsviolationsassessed-violationsorders-107a
03 / HEALTHwatch

Occupational health samples

21,975 coal dust; 482 coal quartz; 843 noise. 0 personal-sample rows have a published C/E ratio above 1; 224 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 EXPOSURE23K samples
coal-dust-samplesquartz-samplesnoise-samples
04 / PRODUCTIONcontext

Quarterly production and employment

372K employee hours and 656 summed average employees across reported subunits in the latest published quarter.

2026-Q21.7M tons
mine-production-quarterlymine-production-yearly
05 / LEGALwatch

Contests, conferences and decisions

1,621 contested-violation rows, 1,665 civil-penalty docket/decision rows, and 533 conference records linked by issuance number.

POST-ISSUANCE LIFECYCLE3,819 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 CONTEXT77 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations
07 / INSPECTIONScontext

Inspections

3,375 inspection events and 148K published inspection hours across the historical record.

OVERSIGHT COVERAGE832 since 2021
inspectionsviolations

HEALTH SAMPLING

Silica and quartz

Matching records1414 coal · 0 personal · 0 area
Sample status14 not voided0 voided · 0 status not reported
Mean coal quartz concentration11 µg/m³14 eligible measurements · 0 missing concentration
2026 · Mar 11, 2026–Sep 16, 2026
Date / sampleDataset / analyteOccupation / areaMeasurementSample statusPublished action
58599613 / lab 2026038869Coal quartzQuartzCONTINUOUS MINER OPERATORDESIGNATED OCCUPATION2 µg/m³1% quartzNot voidedNot reported
58597385 / lab 2026032942Coal quartzQuartzLONGWALL OPERATOR (HEADGATE SIDE)DESIGNATED OCCUPATION6 µg/m³0.7% quartzNot voidedNot reported
58599895 / lab 2026028812Coal quartzQuartzROOF BOLTER (MOUNTED) (RETURN SIDE)NON DESIGNATED OCCUPATION4 µg/m³1.6% quartzNot voidedNot reported
58599953 / lab 2026028810Coal quartzQuartzCONTINUOUS MINER OPERATORDESIGNATED OCCUPATION4 µg/m³2.1% quartzNot voidedNot reported
58598126 / lab 2026023161Coal quartzQuartzCONTINUOUS MINER OPERATORDESIGNATED OCCUPATION7 µg/m³2.4% quartzNot voidedNot reported
58598185 / lab 2026023164Coal quartzQuartzROOF BOLTER (MOUNTED) (RETURN SIDE)NON DESIGNATED OCCUPATION5 µg/m³2.6% quartzNot voidedNot reported
58598131 / lab 2026022960Coal quartzQuartzROOF BOLTER (MOUNTED) (RETURN SIDE)NON DESIGNATED OCCUPATION9 µg/m³2.1% quartzNot voidedNot reported
58598137 / lab 2026022959Coal quartzQuartzCONTINUOUS MINER OPERATORDESIGNATED OCCUPATION20 µg/m³2.5% quartzNot voidedNot reported
58598313 / lab 2026013495Coal quartzQuartzLONGWALL OPERATOR (HEADGATE SIDE)DESIGNATED OCCUPATION26 µg/m³2% quartzNot voidedNot reported
58598302 / lab 2026013494Coal quartzQuartzJACK SETTER (LONGWALL)NON DESIGNATED OCCUPATION8 µg/m³3.2% quartzNot voidedNot reported
58598300 / lab 2026013496Coal quartzQuartzMECHANICNON DESIGNATED OCCUPATION33 µg/m³1.7% quartzNot voidedNot reported
58598316 / lab 2026011697Coal quartzQuartzCONTINUOUS MINER OPERATORDESIGNATED OCCUPATION8 µg/m³1.8% quartzNot voidedNot reported
58572139 / lab 2026010413Coal quartzQuartzCONTINUOUS MINER OPERATORDESIGNATED OCCUPATION21 µg/m³2% quartzNot voidedNot reported
58572142 / lab 2026010417Coal quartzQuartzROOF BOLTER (MOUNTED) (RETURN SIDE)NON DESIGNATED OCCUPATION1 µg/m³0.4% quartzNot voidedNot 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 PRODUCTION5,153,309short tons
LABOR HOURS
1,452,404
AVG EMPLOYEES
689
SUPPLY REGION
Appalachia Northern
UNION
United Mine Workers Of America
OPERATION
Mine and Preparation Plant
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

RECENT PUBLIC RECORDS

Recent violations and samples

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

VIOLATIONS12 latest shown
515151575.202(a)Citation
515151475.1107-1(a)(3)(iii)Citation
515151375.512S&S
515151275.1403Citation
515151175.333(h)Citation
515000375.321(a)(2)Citation
515184675.220(a)(1)Citation
515184575.211(d)Citation
OTHER HEALTH SAMPLES8 latest shown

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

Coal dustMAINTENANCE FOREMAN
0 mg/m³Voided
Coal dustMAINTENANCE FOREMAN
.011 mg/m³Voided
Coal dustMAINTENANCE FOREMAN
.027 mg/m³Not voided
Coal dustMECHANIC
.108 mg/m³Voided · INVALID PRODUCTION
Coal dustMECHANIC
.458 mg/m³Voided · INVALID PRODUCTION
Coal dustMECHANIC
.453 mg/m³Not voided
Coal dustROOF BOLTER (MOUNTED) (RETURN SIDE)
.271 mg/m³Not voided
Coal dustROOF BOLTER (MOUNTED) (RETURN SIDE)
.111 mg/m³Voided

SOURCE COVERAGE

Reporting dates and coverage

17 datasets contain linked records. Missing datasets are listed below.

DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors1,537Jan 6, 2000—Sep 20, 2026mine-keyed
Addresses of Recordidentity · logistics1Apr 2, 2024—Apr 2, 2024mine-keyed
Assessed Violationscompliance · legal8,475Jan 7, 2000—Jul 30, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal1,665Aug 23, 2000—Sep 18, 2026mine-keyed
Coal Dust Sampleshealth · safety21,975Jan 4, 2000—Oct 7, 2026mine-keyed
Conferencescompliance · legal533Feb 22, 2000—Sep 23, 2026mine-keyed
Contested Violationscompliance · legal1,621Jul 6, 2000—Jul 30, 2026mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety11,190Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety2,417Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance7Jan 1, 1974—Jul 26, 2016mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance424Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance108Not published—Not publishedmine-keyed
Inspectionssafety · compliance3,375Jan 3, 2000—Oct 8, 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 · safety—No published rowsabsent / not applicable
Noise Sampleshealth · safety · equipment843Feb 22, 2000—Sep 29, 2026mine-keyed
Quartz Samples — Coalhealth · safety482Jan 18, 2000—Sep 16, 2026mine-keyed
Violationscompliance · safety · legal8,713Jan 7, 2000—Oct 8, 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.