Martin Marietta Materials, Inc. safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Regular Safety and Health Inspection
Durham Mine & Mill · 130122526.5 on-site hours reported
Spot Inspection
Alden Portable Plant #2 · 13020331.5 on-site hours reported
Regular Safety and Health Inspection
Fort Calhoun Underground Mine · 250130035.3 on-site hours reported
Insulation and fittings for power wires and cables.
Ottawa Quarry · 140159030 CFR 56.12008 · $151.00 proposed penalty
Moving machine parts.
Ottawa Quarry · 140159030 CFR 56.14107(a) · $165.00 proposed penalty
Regular Safety and Health Inspection
Ottawa Quarry · 140159010.5 on-site hours reported
Safety defects; examination, correction and records.
HICKORY QUARRY · 310004330 CFR 56.14100(b) · $151.00 proposed penalty
Machinery
Saylorville Sand · 1302290Days restricted activity only
Accident narrative
Employee injured left arm while fusing pipe
Regular Safety and Health Inspection
De Soto Sand · 14013023.5 on-site hours reported
Regular Safety and Health Inspection
Georgetown II Quarry · 380052514.8 on-site hours reported
Electrical conductors.
Georgetown II Quarry · 380052530 CFR 56.12004 · $151.00 proposed penalty
Construction and maintenance of guards.
Georgetown II Quarry · 380052530 CFR 56.14112(a)(1) · $151.00 proposed penalty
Electrical conductors.
Henry County Mines & Mill · 400019430 CFR 56.12004 · Significant and substantial (S&S) · $151.00 proposed penalty
Protection of persons at switchgear.
Henry County Mines & Mill · 400019430 CFR 56.12020 · $151.00 proposed penalty
Overhead drive belts.
Milford Quarry · 420217730 CFR 56.14108 · $151.00 proposed penalty
Regular Safety and Health Inspection
CALDWELL QUARRY · 310186910.0 on-site hours reported
Distribution boxes.
Iron Mountain Quarry · 230021030 CFR 56.12006 · $151.00 proposed penalty
Safety defects; examination, correction and records.
Iron Mountain Quarry · 230021030 CFR 56.14100(b) · $226.00 proposed penalty
Inspection.
Henry County Mines & Mill · 400019430 CFR 56.4201(a)(1) · $151.00 proposed penalty
Regular Safety and Health Inspection
Iron Mountain Quarry · 230021017.5 on-site hours reported
Regular Safety and Health Inspection
HICKORY QUARRY · 310004330.0 on-site hours reported
Regular Safety and Health Inspection
Bonds Gravel Pit · 310196317.3 on-site hours reported
Regular Safety and Health Inspection
Berkeley Quarry · 380007234.3 on-site hours reported
Regular Safety and Health Inspection
Milford Quarry · 420217714.0 on-site hours reported
Regular Safety and Health Inspection
Martin Marietta - Piney River Quarry · 440003511.8 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.