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Jeff City Quarry Metal/Non-Metal

Martin Marietta Materials, Inc. · Surface

Controlled by Martin Marietta Materials Inc

Loose Creek, Cole County, MO · Intermittent

MSHA Mine ID: 2302221

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Fatalities: 0
Total incidents: 1
Years on record: 2004
Latest incident: Nov 2004

Compliance record

MSHA citations since 2002

citations

significant & substantial

$20,010

proposed penalties

$17,175

paid to date

Source: MSHA violations data, updated weekly.

Quarterly safety rates

Citations per million employee-hours, as reported to MSHA

Quarter	Hours worked	Citations	Per 1M hrs
2025 Q4	585	0	0.0
2025 Q3	564	0	0.0
2025 Q2	643	0	0.0
2025 Q1	520	1	1923.1
2024 Q4	585	0	0.0
2024 Q3	361	0	0.0
2024 Q2	640	0	0.0
2024 Q1	595	0	0.0

Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.

No fatalities recorded at this mine.

Reportable incidents

1 on file

2004 · 1 incident

November 16, 2004 MO · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS

Muenks Bros Quarries Inc · Over-exertion in lifting objects

EMPLOYEE PUSHED UPWARD ON A CONVEYOR GUARD TO FREE ROCK THAT WAS TRAPPED WITHIN. HE FELT BACK PAIN LATER IN THE DAY AND HAD DIFFICULTY CLIMBING INTO EQUIPMENT.