COY STONE PLANT ADDITION Metal/Non-Metal

Martin Marietta Southeast Agg Operations, LLC · Surface

Controlled by Martin Marietta Materials Inc

Jefferson City, Jefferson County, TN · Active

MSHA Mine ID: 4002465

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Compliance record

MSHA citations since 2000

citations

significant & substantial

$1,610

proposed penalties

$1,610

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	884	1	1131.2
2025 Q1	916	0	0.0
2024 Q4	386	0	0.0
2024 Q3	0	0
2024 Q2	605	1	1652.9
2024 Q1	574	0	0.0
2023 Q3	1,610	1	621.1
2023 Q2	1,692	0	0.0

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

No fatalities recorded at this mine.

1 on file

August 9, 2004 TN · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON

Employee fell to ground while dismounting Cat 980B front end loader.