Stoner Sand Metal/Non-Metal

Martin Marietta Materials, Inc. · Surface

Controlled by Martin Marietta Materials Inc

Mt. Moriah, Harrison County, MO · Active

MSHA Mine ID: 2302014

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Compliance record

MSHA citations since 2000

citations

significant & substantial

$2,663

proposed penalties

$2,589

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	S&S	Per 1M hrs
2025 Q4	2,796	0	0	0.0
2025 Q3	1,304	0	0	0.0
2025 Q2	2,005	1	1	498.8
2025 Q1	2,461	0	0	0.0
2024 Q3	2,954	1	0	338.5
2024 Q1	2,842	0	0	0.0
2023 Q4	1,160	1	0	862.1
2023 Q3	1,774	0	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 31, 2022 MO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON

Con-Agg Companies, LLC · Over-exertion (Not Elsewhere Classified)

After getting a bucket of stemming EE went to turn and EE's left knee popped.