ALL STATUSES / CONTROLLER PORTFOLIO

MDU Resources Group Inc

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

MSHA CONTROLLER IDM09717

MINE PORTFOLIO

87 of 87 mines and facilities

2025-01-01 – 2026-10-13. All statuses records; production reporting is not required.

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
Crusher 31002115 · Intermittent4/8 quarters reportedCanyon, IDSurface · MSHA: Construction Sand and Gravel0769002.3
340 PIT4103543 · AbandonedMclennan, TXSurface · MSHA: Construction Sand and Gravel——00—
Andera Sand Pit1302029 · AbandonedWinneshiek, IASurface · MSHA: Construction Sand and Gravel——00—
Aske Quarry1301412 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
BEAVER PORTABLE3502780 · AbandonedDouglas, ORSurface · MSHA: Crushed, Broken Traprock——00—
Becker Portable Plant #31302223 · AbandonedWoodbury, IASurface · MSHA: Construction Sand and Gravel——00—
Becker Wash Plant #32101389 · AbandonedWoodbury, IASurface · MSHA: Construction Sand and Gravel——00—
Bente Pit1301108 · AbandonedClayton, IASurface · MSHA: Construction Sand and Gravel——00—
Bentley Quarry1301745 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Blume Quarry1300806 · AbandonedClayton, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Boyum Quarry/Pit2102934 · AbandonedFillmore, MNSurface · MSHA: Crushed, Broken Limestone NEC——00—
Brazos Pit4104263 · AbandonedBrazos, TXSurface · MSHA: Construction Sand and Gravel——00—
Broghammer Quarry1301414 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Brumm Quarry2101512 · AbandonedFillmore, MNSurface · MSHA: Crushed, Broken Limestone NEC——00—
Burr Oak Quarry1301271 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Carolan Quarry1301441 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Choice Quarry2102938 · AbandonedFillmore, MNSurface · MSHA: Crushed, Broken Limestone NEC——00—
COBB PIT4103905 · AbandonedRobertson, TXSurface · MSHA: Construction Sand and Gravel——00—
Crusher #33503573 · AbandonedDeschutes, ORSurface · MSHA: Crushed, Broken Stone NEC——00—
Crusher #51002173 · AbandonedAda, IDSurface · MSHA: Construction Sand and Gravel——00—
CRUSHING UNIT 12103119 · AbandonedSherburne, MNSurface · MSHA: Construction Sand and Gravel——00—
Eckerman1300793 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Eckerman Sand & Gravel1301427 · AbandonedWinneshiek, IASurface · MSHA: Construction Sand and Gravel——00—
El Jay Cone2102939 · AbandonedWright, MNSurface · MSHA: Construction Sand and Gravel——00—
Estrem Quarry1301772 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
FARMERS3503374 · AbandonedKlamath, ORSurface · MSHA: Construction Sand and Gravel——00—
Franks Quarry2101622 · AbandonedFillmore, MNSurface · MSHA: Crushed, Broken Limestone NEC——00—
Freeport Pit1301436 · AbandonedWinneshiek, IASurface · MSHA: Construction Sand and Gravel——00—
Gascoyne Mine3200040 · AbandonedBowman, NDSurface · MSHA: Coal (Lignite)——00—
Haman Pit1002087 · AbandonedKootenai, IDSurface · MSHA: Sand, Industrial NEC——00—
Highbanks Road Pit & Plant3502673 · AbandonedJackson, ORSurface · MSHA: Construction Sand and Gravel——00—
Holthaus Quarry1301273 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Horseshoe-Bend Quarry1300154 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Howell Pit4103754 · AbandonedMclennan, TXSurface · MSHA: Construction Sand and Gravel——00—
Johnson Quarry1301944 · AbandonedClayton, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
(Johnson) St Olaf Quarry1301939 · AbandonedClayton, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Kendallville Quarry1300159 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Knife River Colville Pit1002163 · AbandonedStevens, WASurface · MSHA: Sand, Common——00—
Knife River Portable Plant #21302184 · AbandonedWoodbury, IASurface · MSHA: Construction Sand and Gravel——00—
Knife River Screen Plant #11302288 · AbandonedWoodbury, IASurface · MSHA: Construction Sand and Gravel——00—
Knife River Stripping Crew1302361 · AbandonedWoodbury, IASurface · MSHA: Construction Sand and Gravel——00—
Knife River Wash Plant #21302289 · AbandonedWoodbury, IASurface · MSHA: Construction Sand and Gravel——00—
Landsgaard Quarry1301439 · AbandonedAllamakee, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Larson Quarry1301746 · AbandonedClayton, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Le Fleur Quarry2101444 · AbandonedFillmore, MNSurface · MSHA: Crushed, Broken Limestone NEC——00—
Livingood Quarry1300157 · AbandonedAllamakee, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Locust Quarry1301611 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Lonning Pit1301434 · AbandonedAllamakee, IASurface · MSHA: Construction Sand and Gravel——00—
Madison Quarry1300155 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
MARTIN SAND AND GRAVEL0405302 · AbandonedGlenn, CASurface · MSHA: Construction Sand and Gravel——00—
Mc Elroy & Wilken, Inc.2400477 · AbandonedFlathead, MTSurface · MSHA: Construction Sand and Gravel——00—
Mc Elroy & Wilken Incorporated Pit No 22401387 · AbandonedFlathead, MTSurface · MSHA: Construction Sand and Gravel——00—
Mcgregor Quarry1301270 · AbandonedClayton, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Morarend Quarry1300858 · AbandonedClayton, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Muhly Quarry2102469 · AbandonedHouston, MNSurface · MSHA: Crushed, Broken Limestone NEC——00—
Newberg Quarry And Mill2102441 · AbandonedFillmore, MNSurface · MSHA: Crushed, Broken Limestone NEC——00—
Nordness Quarry1301442 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Oak Ridge Quarry2101391 · AbandonedHouston, MNSurface · MSHA: Crushed, Broken Limestone NEC——00—
Peterson Quarry2101445 · AbandonedFillmore, MNSurface · MSHA: Crushed, Broken Limestone NEC——00—
PIONEER JAW/ROLL2103117 · AbandonedWright, MNSurface · MSHA: Construction Sand and Gravel——00—
Pit #2 Wash Plant2402111 · AbandonedFlathead, MTSurface · MSHA: Construction Sand and Gravel——00—
PLAINS WASH PLANT2402142 · AbandonedSanders, MTSurface · MSHA: Construction Sand and Gravel——00—
Portable Crusher3503520 · AbandonedDeschutes, ORSurface · MSHA: Crushed, Broken Stone NEC——00—
Portable Rip Rap Plant #11302108 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Portable Rip Rap Plant #12101395 · AbandonedHouston, MNSurface · MSHA: Crushed, Broken Limestone NEC——00—
Portable Rock Plant #11302106 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Portable Rock Plant #21302107 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Portable Rock Plant #22101392 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Portable Rock Plant #32103122 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Portable Sand Plant #11302109 · AbandonedWinneshiek, IASurface · MSHA: Construction Sand and Gravel——00—
Protivin1300160 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Quality Rock Pit3503402 · AbandonedJackson, ORSurface · MSHA: Crushed, Broken Stone NEC——00—
Rud Quarry1301269 · AbandonedAllamakee, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
SISTERS/SECTION III SITE3503477 · AbandonedDeschutes, ORSurface · MSHA: Construction Sand and Gravel——00—
SMITH BAR3500723 · AbandonedDouglas, ORSurface · MSHA: Construction Sand and Gravel——00—
Smith Quarry1302055 · AbandonedClayton, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Sny Magil Quarry1301954 · AbandonedClayton, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Stika Quarry1302028 · AbandonedWinneshiek, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Swenson Quarry1301964 · AbandonedAllamakee, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Thiele Quarry2101394 · AbandonedHouston, MNSurface · MSHA: Crushed, Broken Limestone NEC——00—
Thompson Quarry1301700 · AbandonedClayton, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
Tucker Quarry1301792 · AbandonedClayton, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
TUMALO3503476 · AbandonedDeschutes, ORSurface · MSHA: Construction Sand and Gravel——00—
Tutvedt Pit2402176 · AbandonedFlathead, MTSurface · MSHA: Construction Sand and Gravel——00—
Watson Quarry1300851 · AbandonedClayton, IASurface · MSHA: Crushed, Broken Limestone NEC——00—
WHETSTONE3503469 · AbandonedJackson, ORSurface · MSHA: Crushed, Broken Stone NEC——00—
Zurcher Quarry1301435 · AbandonedClayton, IASurface · MSHA: Crushed, Broken Limestone NEC——00—

LOCATION

Portfolio map

13 of 87 mines 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

0

0 significant & substantial (S&S)

  1. 2025 Q10
  2. 2025 Q20
  3. 2025 Q30
  4. 2025 Q40
  5. 2026 Q10
  6. 2026 Q20
  7. 2026 Q30
  8. 2026 Q4 *0

Accident records

0

0 records classified as fatality

  1. 2025 Q10
  2. 2025 Q20
  3. 2025 Q30
  4. 2025 Q40
  5. 2026 Q10
  6. 2026 Q20
  7. 2026 Q30
  8. 2026 Q4 *0

Proposed penalties · USD

—

0 of 0 violations with amounts

  1. 2025 Q1—
  2. 2025 Q2—
  3. 2025 Q3—
  4. 2025 Q4—
  5. 2026 Q1—
  6. 2026 Q2—
  7. 2026 Q3—
  8. 2026 Q4 *—

On-site inspection hours

2.25

2 inspections · 2 with hours

  1. 2025 Q1—
  2. 2025 Q21.75
  3. 2025 Q3—
  4. 2025 Q4—
  5. 2026 Q1—
  6. 2026 Q2—
  7. 2026 Q30.50
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q100—000—
2025-Q200—0011.8
2025-Q300—000—
2025-Q400—000—
2026-Q100—000—
2026-Q200—000—
2026-Q300—0010.5
2026-Q4 *00—000—

Most cited CFR sections

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

SectionViolationsS&S

No violation records in this period.

Safety activity

  1. inspectionF0332DB
    Crusher 3 · 1002115

    Mine Idle Activity · 0.5 on-site hours

  2. inspectionF021ED4
    Crusher 3 · 1002115

    Regular Safety and Health Inspection · 1.8 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 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 controller in the selected period. EIA-923 does not cover all mine sales, exports or metallurgical coal shipments.

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—Weighted by estimated sales of covered mines
ESTIMATED SALES · SHORT TONS—Allocated from published county sales
ESTIMATED COAL REVENUE · USD—Covered mines only · not reported revenue
ANNUAL PRODUCTION COVERED—0 of 0 producing annual mine records
Mine / countyAnnual production · tonsCounty FOB · USD/tonEst. sales · tonsEst. coal revenue · USDBasis / availability
Gascoyne Mine3200040 · Location unavailable————No matching annual production record
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

13 linked operators.

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