MINE DETAILS
Laurel Fork Mine
MSHA MINE ID4609084
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Laurel Fork Mine37.20528, -81.61778Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-18. MSHA quarterly production and employment reports.
Coal production
161,474reported short tons
Hours worked
134,869reported employee hours
Tons per hour
1.20production ÷ 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 | 50,860 | 36,602 | 1.39 | 52 | 1/1 mines reporting |
| 2025 Q2 | 46,548 | 37,859 | 1.23 | 48 | 1/1 mines reporting |
| 2025 Q3 | 35,304 | 24,097 | 1.47 | 34 | 1/1 mines reporting |
| 2025 Q4 | 0 | 2,739 | 0.00 | 5 | 1/1 mines reporting |
| 2026 Q1 | 0 | 6,046 | 0.00 | 12 | 1/1 mines reporting |
| 2026 Q2 | 28,762 | 27,526 | 1.04 | 40 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-18
Violations
527108 significant & substantial (S&S)
Accident records
90 records classified as fatality
Proposed penalties · USD
606,527.00447 of 527 violations with amounts
On-site inspection hours
1,708.7558 inspections · 58 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 | 100 | 21 | 233,398.00 | 1 | 0 | 7 | 241.0 |
| 2025-Q2 | 80 | 16 | 96,636.00 | 2 | 0 | 8 | 260.5 |
| 2025-Q3 | 70 | 16 | 78,289.00 | 2 | 0 | 7 | 220.8 |
| 2025-Q4 | 1 | 0 | 336.00 | 0 | 0 | 8 | 94.5 |
| 2026-Q1 | 6 | 0 | 3,374.00 | 0 | 0 | 8 | 76.3 |
| 2026-Q2 | 88 | 15 | 80,861.00 | 4 | 0 | 8 | 309.5 |
| 2026-Q3 | 157 | 34 | 113,633.00 | 0 | 0 | 9 | 471.0 |
| 2026-Q4 * | 25 | 6 | — | 0 | 0 | 3 | 35.3 |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
While repairing a splice on the #2 belt, the belt clamp unexpectedly came loose and struck the employee in the left forearm, resulting in a laceration.
SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was working in the No. 5 Right Entry when EE tripped over a lump of coal and fell, causing EE's right hand to flex during the fall. The employee continued working following the incident until EE was removed from duty by a physician on 6/10/26 for a fracture.
FALL OF ROOF OR BACK · ACCIDENT ONLY
Accident narrative
A non-injury roof fall occurred in the #5 entry on the 2nd East Mains at spad #258. The fall was approximately 80 feet long, 20 feet wide and up to 50 inches thick.
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
The employee was lifting a rub rail into position on a continuous mining machine when EE experienced pain in EE's groin area. The employee continued working following the incident and remained at work until being removed from duty by a physician on 6/1/2026.
HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
On 8/2/25 employee picked up a small air compressor and felt a pain in groin/stomach area. Employee continued to work and sought medical treatment on 8/8/25 and diagnosed with a potential hernia. EE continues to work and has fulfilled all their duties as a dispatcher. The employee is scheduled to see a specialist for complete diagnosis and applicable treatment.
SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY
Accident narrative
On 7/19/25 the injured employee twisted EE's knee while rising to EE's feet from a kneeled position but finished EE's shift. Employee missed work on 7/21/25 to be examined by a physician and returned to work on 7/22/25 with no restrictions and continued to work until 7/25/25, when EE again missed work to be evaluated by a physician. The employee received a full release for 7/28/25.
FALL OF FACE/RIB/PILLAR/SIDE/HIGHWALL · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was in the #4 entry when a coal rib gave loose striking them on the right ankle. Employee finished the shift and sought medical attention on 6/12/25 for a fracture ankle.
POWERED HAULAGE · DAYS AWAY FROM WORK ONLY
Accident narrative
The employee's left foot was positioned near the edge of the scoop bucket as it was being lowered to the ground, resulting in the bucket making contact with their foot.
MACHINERY · DAYS AWAY FROM WORK ONLY
Accident narrative
While working to repair dust vacuum hose on the roof bolting machine the drill boom was inadvertently raised pinching the injured employee's fingers between the top of the drill pot and the mine roof resulting in lacerations requiring stitches to two fingers.
Safety sources and definitions
MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-18.
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.
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.
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 |
|---|---|---|---|---|---|
| Laurel Fork Mine4609084 · Mcdowell, West Virginia | 171,019 | 150.07 | 172,756 | 25,925,455 | County allocation estimate9.01% 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.
—
Michael D BauersachscontrolsRamaco Resources, LLCoperatesLaurel Fork Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4609084—
Ramaco Resources InccontrolsRamaco Resources, LLCoperatesLaurel Fork Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4609084—
Coronado Coal LLCcontrolsBuchanan Minerals, LLCoperatesLaurel Fork Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4609084—
CONSOL Energy InccontrolsCONSOL Amonate Mining Company LLCoperatesLaurel Fork Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4609084—
Robert E MurraycontrolsConsolidation Coal CompanyoperatesLaurel Fork Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4609084—
Robert E MurraycontrolsConsolidation Coal CompanyoperatesLaurel Fork Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4609084—
Robert E MurraycontrolsConsolidation Coal CompanyoperatesLaurel Fork Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4609084—
Robert E MurraycontrolsConsolidation Coal CompanyoperatesLaurel Fork Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4609084—
CONSOL Energy InccontrolsConsolidation Coal CompanyoperatesLaurel Fork Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4609084—
Herbie NoelcontrolsBlue Diamond Coal Co. of VirginiaoperatesLaurel Fork Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4609084—
John M SmithcontrolsWolfpen Mining, LLCoperatesLaurel Fork Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4609084—
CONSOL Energy InccontrolsConsolidation Coal CompanyoperatesLaurel Fork Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4609084—
Dick J PlastercontrolsHarvest-Time Coal IncoperatesLaurel Fork Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4609084—
CONSOL Energy InccontrolsConsolidation Coal CompanyoperatesLaurel Fork Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4609084—
Anthony P ClinecontrolsShadow Valley Mining, LLCoperatesLaurel Fork Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4609084—
CONSOL Energy InccontrolsConsolidation Coal CompanyoperatesLaurel Fork Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4609084Other 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
42 historical accident/injury rows; 0 coded fatalities and 1,241 lost days across the published record.
ACCIDENT + INJURY RECORD29 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
1,301 violation rows across the full record; 309 carry an S&S flag and $1,070,976 appears in current assessed amounts.
ENFORCEMENT ACTIVITY1,040 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
2,371 coal dust; 118 coal quartz; 69 noise. 0 personal-sample rows have a published C/E ratio above 1; 12 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 EXPOSURE3K samples
coal-dust-samplesquartz-samplesnoise-samples04 / PRODUCTIONcontext
Quarterly production and employment
28K employee hours and 40 summed average employees across reported subunits in the latest published quarter.
2026-Q229K tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
218 contested-violation rows, 218 civil-penalty docket/decision rows, and 51 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE487 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
253 inspection events and 8K published inspection hours across the historical record.
OVERSIGHT COVERAGE144 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 18, 2026. 118 silica records across the mine’s published history.
Coal quartz concentration
Quarterly mean · µg/m³ · not-voided samples
— 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 |
|---|---|---|---|---|---|
| 58530875 / lab 2026039245 | Coal quartzQuartz | SHUTTLE CAR OPERATOR (STANDARD SIDE)NON DESIGNATED OCCUPATION | 2 µg/m³0.8% quartz | Not voided | Not reported |
| 58532551 / lab 2026039249 | Coal quartzQuartz | CONTINUOUS MINER OPERATORDESIGNATED OCCUPATION | 5 µg/m³2% quartz | Not voided | Not reported |
| 58532268 / lab 2026039248 | Coal quartzQuartz | OCCUPATION CODE NOT FOUNDINTAKE AIR | 2 µg/m³0.9% quartz | Not voided | Not reported |
| 58532295 / lab 2026039275 | Coal quartzQuartz | ROOF BOLTER (TWIN HEAD) (RETURN SIDE)NON DESIGNATED OCCUPATION | 10 µg/m³2.9% quartz | Not voided | Not reported |
| 58532043 / lab 2026039279 | Coal quartzQuartz | SHUTTLE CAR OPERATOR (STANDARD SIDE)NON DESIGNATED OCCUPATION | 14 µg/m³2.2% quartz | Not voided | Not reported |
| 58532283 / lab 2026039277 | Coal quartzQuartz | CONTINUOUS MINER OPERATORDESIGNATED OCCUPATION | 18 µg/m³3.4% quartz | Not voided | Not reported |
| 58532106 / lab 2026039250 | Coal quartzQuartz | ROOF BOLTER (TWIN HEAD) (RETURN SIDE)NON DESIGNATED OCCUPATION | 4 µg/m³1.8% quartz | Not voided | Not reported |
| 58532292 / lab 2026035883 | Coal quartzQuartz | OCCUPATION CODE NOT FOUNDDESIGNATED AREA | 0 µg/m³—% quartz | Not voided | Not reported |
| 58532229 / lab 2026023425 | Coal quartzQuartz | ROOF BOLTER (TWIN HEAD) (RETURN SIDE)NON DESIGNATED OCCUPATION | 14 µg/m³3.8% quartz | Not voided | Not reported |
| 58532455 / lab 2026023422 | Coal quartzQuartz | SHUTTLE CAR OPERATOR (STANDARD SIDE)NON DESIGNATED OCCUPATION | 14 µg/m³2.6% quartz | Not voided | Not reported |
| 58532225 / lab 2026023430 | Coal quartzQuartz | CONTINUOUS MINER OPERATORDESIGNATED OCCUPATION | 22 µg/m³9.9% quartz | Not voided | Not reported |
| 58532278 / lab 2026023423 | Coal quartzQuartz | CONTINUOUS MINER OPERATORDESIGNATED OCCUPATION | 11 µg/m³2.8% quartz | Not voided | Not reported |
| 58532244 / lab 2026023433 | Coal quartzQuartz | ROOF BOLTER (TWIN HEAD) (RETURN SIDE)NON DESIGNATED OCCUPATION | 132 µg/m³22.2% quartz | Not voided | Not reported |
| 58532265 / lab 2026023427 | Coal quartzQuartz | OCCUPATION CODE NOT FOUNDINTAKE AIR | 4 µg/m³0.9% quartz | Not voided | Not reported |
| 58532340 / lab 2026023432 | Coal quartzQuartz | SHUTTLE CAR OPERATOR (STANDARD SIDE)NON DESIGNATED OCCUPATION | 8 µg/m³4.2% 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.
ANNUAL COAL PRODUCTION171,019short tons
- LABOR HOURS
- 142,829
- AVG EMPLOYEES
- 52
- SUPPLY REGION
- Appalachia Central
- UNION
- No union code published
- OPERATION
- Mine only
- COMPANY TYPE
- Independent Producer Operator
1 published EIA row aggregated under this MSHA ID. Components remain available in JSON.
30 CFR 75.202Protection from falls of roof, face and ribs.1 recent row ↗30 CFR 75.1731Maintenance of belt conveyors and belt conveyor entries.1 recent row ↗30 CFR 75.400Accumulation of combustible materials.2 recent rows ↗30 CFR 75.1725Machinery and equipment; operation and maintenance.1 recent row ↗30 CFR 75.360Preshift examination at fixed intervals.1 recent row ↗30 CFR 77.904Identification of circuit breakers.1 recent row ↗30 CFR 77.506Electric equipment and circuits; overload and short-circuit protection.1 recent row ↗30 CFR 75.370Mine ventilation plan; submission and approval.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
987938975.202(a)S&S
9879388—Order
921753975.1731(a)Citation
921753875.400Citation
921753775.1725(a)S&S
921753675.360(f)Citation
921241977.904Citation
921241877.506Citation
Coal dust, noise and other contaminants. Silica records above ↑
Coal dustCONTINUOUS MINER OPERATOR
.179 mg/m³Voided · INVALID PRODUCTION
Coal dustCONTINUOUS MINER OPERATOR
.347 mg/m³Voided
Coal dustCONTINUOUS MINER OPERATOR
.3 mg/m³Voided
Coal dustCONTINUOUS MINER OPERATOR
.478 mg/m³Voided
Coal dustCONTINUOUS MINER OPERATOR
.545 mg/m³Not voided
Coal dustCONTINUOUS MINER OPERATOR
.319 mg/m³Not voided
Coal dustCONTINUOUS MINER OPERATOR
.31 mg/m³Voided
Coal dustCONTINUOUS MINER OPERATOR
.496 mg/m³Voided
SOURCE COVERAGE
Reporting dates and coverage
17 datasets contain linked records. Missing datasets are listed below.
DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors42Aug 13, 2005—Jun 16, 2026mine-keyed
Addresses of Recordidentity · logistics1Apr 14, 2026—Apr 14, 2026mine-keyed
Assessed Violationscompliance · legal1,203Mar 10, 2005—Sep 2, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal218Nov 23, 2005—Mar 13, 2026mine-keyed
Coal Dust Sampleshealth · safety2,371Apr 4, 2006—Oct 14, 2026mine-keyed
Conferencescompliance · legal51May 3, 2005—Dec 4, 2024mine-keyed
Contested Violationscompliance · legal218Mar 10, 2005—Jun 22, 2026mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety1,750Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety407Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance16Mar 2, 2005—Dec 3, 2021mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance219Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance34Not published—Not publishedmine-keyed
Inspectionssafety · compliance253Mar 9, 2005—Oct 14, 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 · equipment69Oct 18, 2007—Sep 28, 2026mine-keyed
Quartz Samples — Coalhealth · safety118Jun 21, 2006—Sep 16, 2026mine-keyed
Violationscompliance · safety · legal1,301Mar 10, 2005—Oct 14, 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.