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U.S. MINING ENTITIES / CONTROLLER / M00893

ACTIVE / CONTROLLER PORTFOLIO

Mathy Construction Company

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

MSHA CONTROLLER IDM00893

MINE PORTFOLIO

25 of 25 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
Plant #284703084 · Active6/8 quarters reportedLa Crosse, WISurface · MSHA: Construction Sand and Gravel018,1921122.0
Plant #304702873 · Active6/8 quarters reportedLa Crosse, WISurface · MSHA: Crushed, Broken Limestone NEC014,6763032.0
Plant #324702405 · Active6/8 quarters reportedMonroe, WISurface · MSHA: Crushed, Broken Limestone NEC023,6584025.0
Plant #382100777 · Active6/8 quarters reportedLa Crosse, WISurface · MSHA: Crushed, Broken Limestone NEC019,3632111.3
Plant #392103088 · Active6/8 quarters reportedLa Crosse, WISurface · MSHA: Construction Sand and Gravel020,7560113.5
Plant #404703038 · Active6/8 quarters reportedLa Crosse, WISurface · MSHA: Construction Sand and Gravel04,934008.0
Plant #424701724 · Active6/8 quarters reportedSauk, WISurface · MSHA: Crushed, Broken Limestone NEC020,2831019.0
Plant #444701730 · Active6/8 quarters reportedSauk, WISurface · MSHA: Crushed, Broken Limestone NEC019,6100113.8
Plant #454702874 · Active6/8 quarters reportedSauk, WISurface · MSHA: Crushed, Broken Limestone NEC018,2590118.8
Plant #484700201 · Active6/8 quarters reportedSauk, WISurface · MSHA: Crushed, Broken Limestone NEC017,9540013.8
Plant #534703196 · Active6/8 quarters reportedLa Crosse, WISurface · MSHA: Crushed, Broken Limestone NEC027,5040017.3
Plant #614703235 · Active6/8 quarters reportedLa Crosse, WISurface · MSHA: Crushed, Broken Limestone NEC021,1343014.8
Plant #642103264 · Active6/8 quarters reportedWabasha, MNSurface · MSHA: Crushed, Broken Limestone NEC019,9314017.3
Plant #664703274 · Active6/8 quarters reportedLa Crosse, WISurface · MSHA: Crushed, Broken Limestone NEC020,6446039.8
Plant 764703505 · Active6/8 quarters reportedLa Crosse, WISurface · MSHA: Construction Sand and Gravel06,298008.3
Plant 804703609 · Active6/8 quarters reportedDunn, WISurface · MSHA: Sand, Common025,3821025.5
Plant #814703467 · Active6/8 quarters reportedSt Croix, WISurface · MSHA: Construction Sand and Gravel016,9610016.5
Plant 824703639 · Active6/8 quarters reportedLa Crosse, WISurface · MSHA: Construction Sand and Gravel022,7321016.0
PLANT 834703640 · Active6/8 quarters reportedLa Crosse, WISurface · MSHA: Construction Sand and Gravel020,2500011.3
Plant 844703641 · Active6/8 quarters reportedLa Crosse, WISurface · MSHA: Construction Sand and Gravel020,9010014.3
Plant #854703786 · Active6/8 quarters reportedSauk, WISurface · MSHA: Crushed, Broken Limestone NEC024,0430014.3
Plant #864703452 · Active6/8 quarters reportedSauk, WISurface · MSHA: Crushed, Broken Limestone NEC011,546008.5
Plant 874703663 · Active6/8 quarters reportedLa Crosse, WISurface · MSHA: Construction Sand and Gravel023,7240017.8
Plant #914703679 · Active6/8 quarters reportedJackson, WISurface · MSHA: Construction Sand and Gravel015,8821212.3
Portable Crusher #13503758 · Active6/8 quarters reportedDeschutes, ORSurface · MSHA: Crushed, Broken Stone NEC026,7593031.8

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

25 of 25 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 25 mines listed under this controller were checked; 25 have reports in the available quarters. Totals use current ownership.

Coal production

0

reported short tons

  1. 2025 Q10
  2. 2025 Q20
  3. 2025 Q30
  4. 2025 Q40
  5. 2026 Q10
  6. 2026 Q20
  7. 2026 Q3—No usable value reported
  8. 2026 Q4 *—No usable value reported

Hours worked

481,376

reported employee hours

  1. 2025 Q157,732
  2. 2025 Q297,179
  3. 2025 Q397,683
  4. 2025 Q476,403
  5. 2026 Q158,904
  6. 2026 Q293,475
  7. 2026 Q3—No usable value reported
  8. 2026 Q4 *—No usable value reported

Tons per hour

0.00

production ÷ hours worked

  1. 2025 Q10.00
  2. 2025 Q20.00
  3. 2025 Q30.00
  4. 2025 Q40.00
  5. 2026 Q10.00
  6. 2026 Q20.00
  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 Mathy Construction Company
QuarterCoal (short tons)Hours workedTons / hourAvg. employeesCoverage
2025 Q1057,7320.008025/25 mines reporting
2025 Q2097,1790.0013225/25 mines reporting
2025 Q3097,6830.0013125/25 mines reporting
2025 Q4076,4030.0010125/25 mines reporting
2026 Q1058,9040.007925/25 mines reporting
2026 Q2093,4750.0012625/25 mines reporting
2026 Q3————No report
2026 Q4————No report

Safety and enforcement

2025-01-01 – 2026-10-18

Violations

30

2 significant & substantial (S&S)

  1. 2025 Q16
  2. 2025 Q28
  3. 2025 Q310
  4. 2025 Q41
  5. 2026 Q12
  6. 2026 Q23
  7. 2026 Q30
  8. 2026 Q4 *0

Accident records

7

0 records classified as fatality

  1. 2025 Q10
  2. 2025 Q21
  3. 2025 Q32
  4. 2025 Q42
  5. 2026 Q10
  6. 2026 Q22
  7. 2026 Q30
  8. 2026 Q4 *0

Proposed penalties · USD

5,512.00

30 of 30 violations with amounts

  1. 2025 Q1906
  2. 2025 Q21,699
  3. 2025 Q32,001
  4. 2025 Q4151
  5. 2026 Q1302
  6. 2026 Q2453
  7. 2026 Q3—
  8. 2026 Q4 *—

On-site inspection hours

442.25

93 inspections · 93 with hours

  1. 2025 Q1108.50
  2. 2025 Q220.25
  3. 2025 Q362.00
  4. 2025 Q455.75
  5. 2026 Q177.50
  6. 2026 Q262.00
  7. 2026 Q356.25
  8. 2026 Q4 *0.00

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-Q160906.000017108.5
2025-Q2811,699.0010420.3
2025-Q31012,001.00201962.0
2025-Q410151.00201555.8
2026-Q120302.00001677.5
2026-Q230453.00201162.0
2026-Q300—001056.3
2026-Q4 *00—0010.0

Most cited CFR sections

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

SectionViolationsS&S
30 CFR 56.12004Electrical conductors.51
30 CFR 56.14107Moving machine parts.40
30 CFR 56.14132Horns and backup alarms.30
30 CFR 56.12018Identification of power switches.20
30 CFR 56.14101Brakes.20
30 CFR 56.14209Safety procedures for towing.20
30 CFR 56.4402Safety can use.20
30 CFR 46.9Records of training.10
30 CFR 56.12008Insulation and fittings for power wires and cables.10
30 CFR 56.14100Safety defects; examination, correction and records.10

Safety activity

  1. accident220253290022
    Plant #38 · 2100777

    HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY

    Accident narrative

    While lowering a light on a electrical box, the light came down and hit their jaw, fracturing a molar tooth.

  2. inspectionF034A62
    PLANT 83 · 4703640

    Regular Safety and Health Inspection · 4.0 on-site hours

  3. inspectionF011CA9
    Plant #64 · 2103264

    Regular Safety and Health Inspection · 2.0 on-site hours

  4. inspectionF011CA6
    Plant #42 · 4701724

    Regular Safety and Health Inspection · 7.0 on-site hours

  5. inspectionF011CA3
    Plant #45 · 4702874

    Regular Safety and Health Inspection · 4.8 on-site hours

  6. inspectionF011CA4
    Plant #85 · 4703786

    Regular Safety and Health Inspection · 6.3 on-site hours

  7. inspectionF011CA2
    Plant #44 · 4701730

    Regular Safety and Health Inspection · 1.5 on-site hours

  8. inspectionF011CA1
    Plant #86 · 4703452

    Regular Safety and Health Inspection · 1.5 on-site hours

  9. inspectionF011C9E
    Plant #39 · 2103088

    Regular Safety and Health Inspection · 2.0 on-site hours

  10. inspectionF011C9F
    Plant #28 · 4703084

    Regular Safety and Health Inspection · 1.8 on-site hours

  11. inspectionF011CA0
    Plant 87 · 4703663

    Regular Safety and Health Inspection · 1.3 on-site hours

  12. accident220253170281
    Plant #45 · 4702874

    HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY

    Accident narrative

    Piece of metal got into employees' eye sometime during shift, unknown how it happened.

  13. inspection6906624
    Plant #61 · 4703235

    Regular Safety and Health Inspection · 1.5 on-site hours

  14. inspectionF02F860
    Plant #28 · 4703084

    Spot Inspection · 5.5 on-site hours

  15. accident220252730014
    Plant #39 · 2103088

    HANDTOOLS (NONPOWERED) · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    Employee was cutting flashing with a knife, knife slipped and cut EE's leg. Took several stiches to close the laceration.

  16. inspectionF02526C
    Plant #45 · 4702874

    Spot Inspection · 5.0 on-site hours

  17. inspectionF02EC49
    Plant #32 · 4702405

    Regular Safety and Health Inspection · 5.3 on-site hours

  18. violation5118460
    Plant #32 · 4702405

    56.14101(a)(2) · $151.00 proposed

  19. violation5118459
    Plant #32 · 4702405

    56.14107(a) · $151.00 proposed

  20. violation5118458
    Plant #32 · 4702405

    56.12008 · $151.00 proposed

  21. violation5118457
    Plant #32 · 4702405

    56.12018 · $151.00 proposed

  22. accident220252460001
    Plant #28 · 4703084

    HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY

    Accident narrative

    Operator rubbed EE's eye and got a small piece of metal in EE's eye. Next day eye was swollen and doctor had to grind a piece of metal out of the operators eye.

  23. inspectionF0261DB
    Portable Crusher #1 · 3503758

    Spot Inspection · 8.5 on-site hours

  24. inspectionF0261DA
    Portable Crusher #1 · 3503758

    Special Emphasis Programs · 0.5 on-site hours

  25. inspectionF024316
    Plant #48 · 4700201

    Regular Safety and Health Inspection · 6.5 on-site hours

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.

SELECTED PORTFOLIO

2 linked operators.

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

OPERATOR / L16472Mathy Constr. Co. DBA Northland Constrs. of Duluth24 selected mines →OPERATOR / 0117387Taylor Northwest, LLC1 selected mine →