Martin Marietta Materials Inc safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Conveyor start-up warnings.
Weeping Water Mine · 250099830 CFR 57.14201(b) · $151.00 proposed penalty
Moving machine parts.
Weeping Water Mine · 250099830 CFR 57.14107(a) · $151.00 proposed penalty
Flying or falling materials.
Weeping Water Mine · 250099830 CFR 57.14110 · Significant and substantial (S&S) · $366.00 proposed penalty
Moving machine parts.
Weeping Water Mine · 250099830 CFR 57.14107(a) · $151.00 proposed penalty
Handrails and toeboards.
Weeping Water Mine · 250099830 CFR 57.11002 · $151.00 proposed penalty
Brakes.
Weeping Water Mine · 250099830 CFR 57.14101(a)(3) · $151.00 proposed penalty
Controls and switches.
Martin Marietta - Woodville Lime & Stone · 330015630 CFR 56.12002 · $151.00 proposed penalty
Electrical conductors.
Martin Marietta - Woodville Lime & Stone · 330015630 CFR 56.12004 · $151.00 proposed penalty
Falling/sliding/rolling materials
Thomasville Quarry · 3101475Days restricted activity only
Accident narrative
Metal plate fell onto employees foot. Incident did not become reportable until 2/16/2026 when employee sought metal attention and was diagnosed with fractures.
Other
SAWYER · 3401634Days restricted activity only
Accident narrative
Employee was cleaning up around work area and twisted their knee
Regular Safety and Health Inspection
Cedar Rapids Quarry · 13001228.5 on-site hours reported
Non-Injury Accident Investigation
New Melle Mine · 230204338.3 on-site hours reported
Regular Safety and Health Inspection
SPRING VALLEY - 346 · 33040786.0 on-site hours reported
Regular Safety and Health Inspection
CHESTERFIELD QUARRY · 38006827.3 on-site hours reported
Housekeeping.
Montevallo Quarry & Mill · 010004030 CFR 56.20003(a) · $151.00 proposed penalty
Securing movable parts.
Morgan County Quarry · 090112630 CFR 56.14206(b) · $151.00 proposed penalty
Temporary, portable containers.
Texas Quarry · 180000930 CFR 47.44(b) · $151.00 proposed penalty
Electrical conductors.
Huntsville Quarry · 230200430 CFR 56.12004 · $151.00 proposed penalty
Portable rigid ladders.
Huntsville Quarry · 230200430 CFR 56.11004 · $151.00 proposed penalty
Identification of power switches.
Huntsville Quarry · 230200430 CFR 56.12018 · $151.00 proposed penalty
Violation — cited standard not reported
New Melle Mine · 2302043Safety defects; examination, correction and records.
ARROWOOD · 310005930 CFR 56.14100(b) · Significant and substantial (S&S) · $288.00 proposed penalty
Protection of persons at switchgear.
ARROWOOD · 310005930 CFR 56.12020 · $151.00 proposed penalty
Inspection and cover plates.
Martin Marietta - Woodville Lime & Stone · 330015630 CFR 56.12032 · $336.00 proposed penalty
Electrical conductors.
Martin Marietta - Woodville Lime & Stone · 330015630 CFR 56.12004 · $151.00 proposed penalty
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.