Martin Marietta Materials, Inc. safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Regular Safety and Health Inspection
Clifton Plant · 410001331.5 on-site hours reported
Regular Safety and Health Inspection
Anderson Creek Quarry · 440296319.0 on-site hours reported
Label contents.
Weeping Water Mine · 250099830 CFR 47.42(a) · $151.00 proposed penalty
Housekeeping.
POMONA · 310005230 CFR 56.20003(b) · $151.00 proposed penalty
Electrical conductors.
POMONA · 310005230 CFR 56.12004 · $165.00 proposed penalty
Stationary grinding machines.
Clifton Plant · 410001330 CFR 56.14115(b) · $151.00 proposed penalty
Regular Safety and Health Inspection
Weeping Water Mine · 250099864.0 on-site hours reported
Regular Safety and Health Inspection
Kokomo Mine · 120210513.8 on-site hours reported
Regular Safety and Health Inspection
Appling Quarry · 090108313.5 on-site hours reported
Regular Safety and Health Inspection
Carmel Sand & Gravel · 12021247.0 on-site hours reported
Impoundment Spot Inspection
Plant #65 · 23019223.0 on-site hours reported
Requirement for container labels.
NATIVIDAD PLANT · 040015630 CFR 47.41(a)(1) · $151.00 proposed penalty
Danger signs.
Appling Quarry · 090108330 CFR 56.12021 · $209.00 proposed penalty
Regular Safety and Health Inspection
Clarkdale Plant #24 · 02025245.3 on-site hours reported
Regular Safety and Health Inspection
Amargosa Quarry and Plant · 26010437.5 on-site hours reported
Regular Safety and Health Inspection
Bonds Gravel Pit · 310196310.8 on-site hours reported
Examination of working places.
Clarkdale Plant #24 · 020252430 CFR 56.18002(a) · $288.00 proposed penalty
Safe access.
Clarkdale Plant #24 · 020252430 CFR 56.11001 · $288.00 proposed penalty
Housekeeping.
NATIVIDAD PLANT · 040015630 CFR 56.20003(a) · $151.00 proposed penalty
Electric substations and liquid storage facilities.
NATIVIDAD PLANT · 040015630 CFR 56.4130(a)(1) · $151.00 proposed penalty
Independent contractor register.
Amargosa Quarry and Plant · 260104330 CFR 45.4(b) · $151.00 proposed penalty
Combustible waste.
Amargosa Quarry and Plant · 260104330 CFR 56.4104(b) · $165.00 proposed penalty
Access to stationary electrical equipment or switchgear.
Amargosa Quarry and Plant · 260104330 CFR 56.12019 · $165.00 proposed penalty
Inspection.
Amargosa Quarry and Plant · 260104330 CFR 56.4201(a)(2) · $165.00 proposed penalty
Horns and backup alarms.
Amargosa Quarry and Plant · 260104330 CFR 56.14132(b)(2) · $1,818.00 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.