← Martin Marietta Materials, Inc.

Martin Marietta Materials, Inc. safety activity

MSHA violations, accident reports and inspections across the current mine portfolio.

2025-01-01 – 2026-10-31Database snapshot · 2026-10-31

Safety activity

  1. Barricades and warning signs.

    violationRecord 9756746
    Rock Hill Quarry · 3800026

    30 CFR 56.20011 · $226.00 proposed penalty

  2. Unguarded conveyors with adjacent travelways.

    violationRecord 9756745
    Rock Hill Quarry · 3800026

    30 CFR 56.14109(b)(1) · $226.00 proposed penalty

  3. Securing gas cylinders.

    violationRecord 9756744
    Rock Hill Quarry · 3800026

    30 CFR 56.16005 · $151.00 proposed penalty

  4. Slip or fall of person

    accidentRecord 220250520003
    DOSWELL QUARRY · 4400045

    No dys awy frm wrk,no rstr act

    Accident narrative

    Employee was climbing a ladder to complete a task on the crusher. Employee went to step on to the third rung of the ladder and slipped. Employee landed on the handrail to EE's right. When employee fell EE's finger/arm caught a piece of metal plate resulting in a scratch on EE's arm and a cut on EE's finger resulting in the nail falling off.

  5. Regular Safety and Health Inspection

    inspectionRecord F0151C6
    O'Neal Quarry & Mill · 0100003

    29.5 on-site hours reported

  6. Moving machine parts.

    violationRecord 9825106
    O'Neal Quarry & Mill · 0100003

    30 CFR 56.14107(a) · $151.00 proposed penalty

  7. Construction and maintenance of guards.

    violationRecord 9825105
    O'Neal Quarry & Mill · 0100003

    30 CFR 56.14112(b) · $151.00 proposed penalty

  8. Moving machine parts.

    violationRecord 9759325
    O'Neal Quarry & Mill · 0100003

    30 CFR 56.14107(a) · $313.00 proposed penalty

  9. Fire

    accidentRecord 220250550004
    Martin Marietta - Woodville Lime & Stone · 3300156

    Accident only

    Accident narrative

    Stored coal spontaneous combustion resulting in a fire within the silo. No injuries were sustained. The fire was extinguished within an hour of discovery.

  10. Regular Safety and Health Inspection

    inspectionRecord F01D9DD
    Spec Agg Quarry · 0500860

    18.3 on-site hours reported

  11. Regular Safety and Health Inspection

    inspectionRecord F015637
    HOMER QUARRY · 0900958

    5.3 on-site hours reported

  12. Regular Safety and Health Inspection

    inspectionRecord F012710
    Plant #65 · 2301922

    8.0 on-site hours reported

  13. Grounding circuit enclosures.

    violationRecord 9829726
    Spec Agg Quarry · 0500860

    30 CFR 56.12025 · $151.00 proposed penalty

  14. Inspection and cover plates.

    violationRecord 9763194
    Plant #65 · 2301922

    30 CFR 56.12032 · $151.00 proposed penalty

  15. Construction and maintenance of guards.

    violationRecord 9763193
    Plant #65 · 2301922

    30 CFR 56.14112(b) · $151.00 proposed penalty

  16. Loading, blasting, and security.

    violationRecord 9754334
    Anderson Mine and Mill · 4000022

    30 CFR 57.6306(g) · Significant and substantial (S&S) · $3,736.00 proposed penalty

  17. Handling of misfires.

    violationRecord 9754333
    Anderson Mine and Mill · 4000022

    30 CFR 57.6311(b) · Significant and substantial (S&S) · $3,736.00 proposed penalty

  18. Regular Safety and Health Inspection

    inspectionRecord 6559788
    Guernsey Quarry · 4800004

    12.0 on-site hours reported

  19. Access to stationary electrical equipment or switchgear.

    violationRecord 9763192
    BUILDEX · 2300319

    30 CFR 56.12019 · $151.00 proposed penalty

  20. Securing movable parts.

    violationRecord 9698948
    Fort Calhoun Underground Mine · 2501300

    30 CFR 57.14206(b) · $697.00 proposed penalty

  21. Housekeeping.

    violationRecord 9822123
    Guernsey Quarry · 4800004

    30 CFR 56.20003(a) · $151.00 proposed penalty

  22. Regular Safety and Health Inspection

    inspectionRecord F015634
    AUBURN QUARRY · 0900436

    7.0 on-site hours reported

  23. Regular Safety and Health Inspection

    inspectionRecord F01270F
    BUILDEX · 2300319

    13.0 on-site hours reported

  24. Compliance Follow-up Inspection

    inspectionRecord F00030D
    Weeping Water Mine · 2500998

    0.0 on-site hours reported

  25. Verbal Hazard Complaint Inspections

    inspectionRecord 6975095
    Anderson Mine and Mill · 4000022

    17.3 on-site hours reported

Sources and definitions

MSHA Violations (issue date), Accidents (accident date) and Inspections (begin date).

Violation titles use current CFR headings to identify the cited rule; they are not the inspector’s account of what happened.

Status is from the current MSHA Mines snapshot, not the selected reporting period. Closed records can retain their last reported controller/operator.

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.