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Smithson Valley Quarry Metal/Non-Metal

Martin Marietta Materials Southwest LLC · Surface

Controlled by Martin Marietta Materials Inc

San Antonio, Bexar County, TX · Active

MSHA Mine ID: 4104108

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Email me when a new MSHA incident is filed at Smithson Valley Quarry.

Fatalities: 0
Total incidents: 2
Years on record: 2003–2005
Latest incident: Jul 2005

Compliance record

MSHA citations since 2001

citations

significant & substantial

$83,246

proposed penalties

$8,337

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	1,974	0	0.0
2025 Q3	2,093	0	0.0
2025 Q2	3,398	1	294.3
2025 Q1	2,910	1	343.6
2024 Q4	3,327	0	0.0
2024 Q3	3,707	1	269.8
2024 Q2	4,189	0	0.0
2024 Q1	2,971	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

2 on file

2005 · 1 incident

July 7, 2005 TX · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON

Olmos Contracting 1, LLC · Fall onto or against objects

EE TRIPPED ON THE BOTTOM EDGE OF THE TRUCK WEIGH SCALE, AS HE EXITED THE SCALE HOUSE. HE STUCK OUT HIS LEFT HAND TO CATCH HIMSELF. HIS HAND GOT CAUGHT IN THE GAP BETWEEN THE TOP OF THE HEADLIGHTS AND THE BOTTOM OF THE HOOD. A SMALL ROUND PIECE OF GLASS LACERATED HIS HAND, REQUIRING SUTURES

2003 · 1 incident

August 12, 2003 TX · Metal/Non-Metal mine manager, mine foreman, mine owner HANDLING OF MATERIALS

Olmos Contracting 1, LLC · Struck by falling object

EE WAS HELPING UNLOAD A PIECE OF EQUIPMENT AND RELEASED TY DOWN. CHAINS BEFORE ATTACHING LIFTING DEVICES. FOOT WAS UNDER EQUIPMENT AND EQUIPMENT SLIPPED, PINNING FOOT UNDER IT.