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U.S. MINING ENTITIES / CONTROLLER / C02111

ACTIVE / CONTROLLER PORTFOLIO

Kiewit Peter Sons' Inc

Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.

MSHA CONTROLLER IDC02111

MINE PORTFOLIO

2 of 2 mines and facilities

2025-01-01 – 2026-10-18. Active records; production reporting is not required.

Material, method and type filters apply to this table. The portfolio’s status applies to the entire page. GEM fields describe their own release, not the selected MSHA year.

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
Buckskin Mine4801200 · Active6/8 quarters reportedCampbell, WYSurface · MSHA: Coal (Bituminous)9,049,560384,697342274.3
Grindstone4105586 · Active6/8 quarters reportedPalo Pinto, TXSurface · MSHA: Crushed, Broken Limestone NEC0204,94526251.0

Production and hours sum available quarterly reports. — means unavailable; zero safety records means none in the selected imported period. Ownership reflects the current MSHA record.

LOCATION

Portfolio map

2 of 2 mines with usable MSHA coordinates. Select a marker to open a mine.

Mine coordinates

2025-01-01 – 2026-10-18Applies to production, safety and portfolio metrics. Silica samples have separate filters.

2025 Q1 – 2026 Q4

JSONCSV

Database snapshot · 2026-10-18. All 2 mines listed under this controller were checked; 2 have reports in the available quarters. Totals use current ownership.

Coal production

9,049,560

reported short tons

  1. 2025 Q12,039,860
  2. 2025 Q21,526,574
  3. 2025 Q31,908,769
  4. 2025 Q41,338,117
  5. 2026 Q11,205,153
  6. 2026 Q21,031,087
  7. 2026 Q3—No usable value reported
  8. 2026 Q4 *—No usable value reported

Hours worked

589,642

reported employee hours

  1. 2025 Q195,866
  2. 2025 Q2107,653
  3. 2025 Q3104,142
  4. 2025 Q499,136
  5. 2026 Q195,909
  6. 2026 Q286,936
  7. 2026 Q3—No usable value reported
  8. 2026 Q4 *—No usable value reported

Tons per hour

15.35

production ÷ hours worked

  1. 2025 Q121.28
  2. 2025 Q214.18
  3. 2025 Q318.33
  4. 2025 Q413.50
  5. 2026 Q112.57
  6. 2026 Q211.86
  7. 2026 Q3—No usable value reported
  8. 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 Kiewit Peter Sons' Inc
QuarterCoal (short tons)Hours workedTons / hourAvg. employeesCoverage
2025 Q12,039,86095,86621.281882/2 mines reporting
2025 Q21,526,574107,65314.181882/2 mines reporting
2025 Q31,908,769104,14218.331582/2 mines reporting
2025 Q41,338,11799,13613.501802/2 mines reporting
2026 Q11,205,15395,90912.571742/2 mines reporting
2026 Q21,031,08786,93611.861592/2 mines reporting
2026 Q3————No report
2026 Q4————No report

Safety and enforcement

2025-01-01 – 2026-10-18

Violations

60

13 significant & substantial (S&S)

  1. 2025 Q17
  2. 2025 Q21
  3. 2025 Q317
  4. 2025 Q47
  5. 2026 Q17
  6. 2026 Q211
  7. 2026 Q310
  8. 2026 Q4 *0

Accident records

4

0 records classified as fatality

  1. 2025 Q10
  2. 2025 Q20
  3. 2025 Q32
  4. 2025 Q41
  5. 2026 Q11
  6. 2026 Q20
  7. 2026 Q30
  8. 2026 Q4 *0

Proposed penalties · USD

22,045.00

49 of 60 violations with amounts

  1. 2025 Q11,173
  2. 2025 Q21,320
  3. 2025 Q39,798
  4. 2025 Q41,547
  5. 2026 Q14,286
  6. 2026 Q23,921
  7. 2026 Q3—
  8. 2026 Q4 *—

On-site inspection hours

325.25

11 inspections · 11 with hours

  1. 2025 Q18.25
  2. 2025 Q217.75
  3. 2025 Q389.50
  4. 2025 Q416.50
  5. 2026 Q183.50
  6. 2026 Q217.00
  7. 2026 Q392.75
  8. 2026 Q4 *—

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
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q1701,173.000018.3
2025-Q2111,320.0000317.8
2025-Q31759,798.0020289.5
2025-Q4711,547.0010216.5
2026-Q1724,286.0010183.5
2026-Q21123,921.0000117.0
2026-Q3102—00192.8
2026-Q4 *00—000—

Most cited CFR sections

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

SectionViolationsS&S
30 CFR 77.404Machinery and equipment; operation and maintenance.53
30 CFR 56.12004Electrical conductors.40
30 CFR 77.1104Accumulations of combustible materials.42
30 CFR 50.30Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.30
30 CFR 56.14100Safety defects; examination, correction and records.30
30 CFR 56.20003Housekeeping.21
30 CFR 56.4201Inspection.20
30 CFR 77.1605Loading and haulage equipment; installations.22
30 CFR 77.410Mobile equipment; automatic warning devices.20
30 CFR 77.502Electric equipment; examination, testing, and maintenance.20

Safety activity

  1. violation5034574
    Buckskin Mine · 4801200

    77.404(a)

  2. violation5033804
    Buckskin Mine · 4801200

    77.1104 · S&S

  3. violation5033803
    Buckskin Mine · 4801200

    77.410(b)

  4. violation5033802
    Buckskin Mine · 4801200

    77.1104 · S&S

  5. violation5033801
    Buckskin Mine · 4801200

    77.512

  6. violation5033800
    Buckskin Mine · 4801200

    77.1303(g)

  7. violation5033799
    Buckskin Mine · 4801200

    77.904

  8. violation5034569
    Buckskin Mine · 4801200

    77.807

  9. violation5033798
    Buckskin Mine · 4801200

    77.904

  10. violation5033797
    Buckskin Mine · 4801200

    77.1101(c)

  11. inspectionF010EF7
    Buckskin Mine · 4801200

    Regular Safety and Health Inspection · 92.8 on-site hours

  12. violation5173598
    Grindstone · 4105586

    56.14100(b) · $151.00 proposed

  13. violation5173597
    Grindstone · 4105586

    56.14107(a) · $209.00 proposed

  14. violation5173596
    Grindstone · 4105586

    56.4201(a)(1) · $209.00 proposed

  15. violation5173595
    Grindstone · 4105586

    56.12032 · $151.00 proposed

  16. violation5173594
    Grindstone · 4105586

    56.14207 · $465.00 proposed

  17. inspectionF03829A
    Grindstone · 4105586

    Regular Safety and Health Inspection · 17.0 on-site hours

  18. violation5173593
    Grindstone · 4105586

    56.20003(a) · S&S · $697.00 proposed

  19. violation5173592
    Grindstone · 4105586

    56.12030 · S&S · $697.00 proposed

  20. violation5173591
    Grindstone · 4105586

    56.12004 · $151.00 proposed

  21. violation5173590
    Grindstone · 4105586

    56.12008 · $465.00 proposed

  22. violation5173589
    Grindstone · 4105586

    56.4201(a)(1) · $209.00 proposed

  23. violation5173588
    Grindstone · 4105586

    46.7(a) · $517.00 proposed

  24. violation9732831
    Buckskin Mine · 4801200

    77.404(a) · S&S · $755.00 proposed

  25. violation9732830
    Buckskin Mine · 4801200

    77.1110 · $151.00 proposed

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.

Latest EIA month: 2026-07Source checked 2026-10-18 · publication lag differs from MSHA.

REPORTED RECEIPTS · SHORT TONS5,377,68479 rows · 7 receiving plants
HEAT CONTENT · BTU/LB8,358Weighted by reported tons
SULFUR / ASH · % BY WEIGHT0.33 / 4.99Separate averages over measured receipts
DELIVERED COST · USD/TON43.2538.2% of reported tons have usable costs
Quarterly receipts and quality
QuarterShort tonsHeat · Btu/lbSulfur %Ash %Delivered USD/ton
2025-Q3 *1,422,5548,2620.284.9135.88
2025-Q41,405,4878,2290.405.3645.41
2026-Q11,226,8788,4280.334.9947.75
2026-Q2999,2138,5210.354.8045.83
2026-Q3 *323,5528,5710.244.2748.60
Month / sourceMineReceiving plant / supplierShort tonsDelivered USD/tonHeat · Btu/lbSulfur %Ash %PurchaseTransport
2026-03EIA row 4538 · preliminaryBUCKSKIN MINE4801200W A Parish3470 · TX · BUCKSKIN170,274—Not published8,4600.365.20ContractSUBRail
2026-03EIA row 4812 · preliminaryBUCKSKIN MINE4801200Scherer6257 · GA · BUCKSKIN MINING CO127,70650.028,4580.364.80ContractSUBRail
2026-02EIA row 2065 · preliminaryBUCKSKIN MINE4801200Limestone298 · TX · BUCKSKIN31,035—Not published8,2700.285.30ContractSUBRail
2026-02EIA row 2066 · preliminaryBUCKSKIN MINE4801200Limestone298 · TX · BUCKSKIN15,267—Not published8,2700.375.80ContractSUBRail
2026-02EIA row 2213 · preliminaryBUCKSKIN MINE4801200Muscatine Plant #11167 · IA · BUCKSKIN14,60836.808,2060.346.00SpotSUBRail
2026-02EIA row 2569 · preliminaryBUCKSKIN MINE4801200W A Parish3470 · TX · BUCKSKIN61,149—Not published8,3950.315.00ContractSUBRail
2026-02EIA row 2570 · preliminaryBUCKSKIN MINE4801200W A Parish3470 · TX · BUCKSKIN139,126—Not published8,3550.274.80ContractSUBRail
2026-02EIA row 2879 · preliminaryBUCKSKIN MINE4801200Scherer6257 · GA · BUCKSKIN MINING CO47,68250.118,3250.264.50ContractSUBRail
2026-02EIA row 2885 · preliminaryBUCKSKIN MINE4801200Scherer6257 · GA · BUCKSKIN MINING CO63,92549.678,4220.304.90ContractSUBRail
2026-01EIA row 49 · preliminaryBUCKSKIN MINE4801200Limestone298 · TX · BUCKSKIN46,658—Not published8,3150.355.00ContractSUBRail
2026-01EIA row 50 · preliminaryBUCKSKIN MINE4801200Limestone298 · TX · BUCKSKIN46,404—Not published8,5100.344.90ContractSUBRail
2026-01EIA row 595 · preliminaryBUCKSKIN MINE4801200W A Parish3470 · TX · BUCKSKIN123,787—Not published8,4800.324.70ContractSUBRail
2026-01EIA row 596 · preliminaryBUCKSKIN MINE4801200W A Parish3470 · TX · BUCKSKIN29,685—Not published8,4700.254.60ContractSUBRail
2026-01EIA row 907 · preliminaryBUCKSKIN MINE4801200Scherer6257 · GA · BUCKSKIN MINING CO16,02748.118,3900.385.00ContractSUBRail
2026-01EIA row 908 · preliminaryBUCKSKIN MINE4801200Scherer6257 · GA · BUCKSKIN MINING CO143,07550.848,5110.354.90ContractSUBRail
2025-12EIA row 33846 · finalBUCKSKIN MINE4801200Limestone298 · TX · BUCKSKIN31,162—Not published8,2950.375.40ContractSUBRail
2025-12EIA row 33849 · finalBUCKSKIN MINE4801200Limestone298 · TX · BUCKSKIN15,269—Not published8,3850.344.80ContractSUBRail
2025-12EIA row 34249 · finalBUCKSKIN MINE4801200North Omaha2291 · NE · BUCKSKIN47,01623.728,3400.344.90ContractSUBRail
2025-12EIA row 34533 · finalBUCKSKIN MINE4801200W A Parish3470 · TX · BUCKSKIN62,075—Not published8,3050.385.40ContractSUBRail
2025-12EIA row 34535 · finalBUCKSKIN MINE4801200W A Parish3470 · TX · BUCKSKIN123,760—Not published8,3300.385.60ContractSUBRail
2025-12EIA row 34928 · finalBUCKSKIN MINE4801200Scherer6257 · GA · BUCKSKIN MINING CO158,86849.328,3940.375.10ContractSUBRail
2025-12EIA row 34929 · finalBUCKSKIN MINE4801200Scherer6257 · GA · BUCKSKIN MINING CO94,48949.868,3240.354.90ContractSUBRail
2025-12EIA row 34933 · finalBUCKSKIN MINE4801200Scherer6257 · GA · BUCKSKIN MINING CO15,86150.058,6000.356.00ContractSUBRail
2025-11EIA row 30862 · finalBUCKSKIN MINE4801200Limestone298 · TX · BUCKSKIN30,543—Not published8,3600.345.00ContractSUBRail
2025-11EIA row 30865 · finalBUCKSKIN MINE4801200Limestone298 · TX · BUCKSKIN76,582—Not published8,3000.325.80ContractSUBRail

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.

Latest priced year: 2024Source checked 2026-10-18. Prices apply only to their calendar year.

FOB PRICE BENCHMARK · USD/TON13.96Weighted by estimated sales of covered mines
ESTIMATED SALES · SHORT TONS6,752,058Allocated from published county sales
ESTIMATED COAL REVENUE · USD94,258,733Covered 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 / countyAnnual production · tonsCounty FOB · USD/tonEst. sales · tonsEst. coal revenue · USDBasis / availability
Buckskin Mine4801200 · Campbell, Wyoming6,752,57013.966,752,05894,258,733County allocation estimate3.97% of eligible county production11 eligible mines / 11 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.

SELECTED PORTFOLIO

2 linked operators.

Relationships reflect the selected mine status and current MSHA controller/operator fields.

OPERATOR / 0138733Buckskin Mining Company1 selected mine →OPERATOR / 0053919Kiewit Mining Group1 selected mine →