Martin Marietta Southern California Aggregates,LLC operator
Controlled by
Martin Marietta Materials Inc
MSHA operator ID: L17823
- Fatalities
- 0
- Total incidents
- 307
- Mines on record
- 32
- Years on record
- 1988–2025
Compliance record
MSHA citations since 2000
1,473
citations
251
significant & substantial
$408,202
proposed penalties
$387,202
paid to date
95% of proposed penalties paid to date, a $21,000 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
827
inspections on record
15,506
inspection hours
9.5
citations per 100 inspection hours
ⓘ
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.1,473 citations across 15,506 inspection hours.
Source: MSHA inspections data, updated weekly.
Penalty disposition
ⓘ
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.$408K
proposed penalties
$387K
current assessed
$387K
paid to date
$4
outstanding
1,465 assessments are final orders; 51 contested dockets.
As of the most recent assessment on 2025-10-23.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Top causes
- HANDLING OF MATERIALS 86 non-fatal
- SLIP OR FALL OF PERSON 82 non-fatal
- HANDTOOLS (NONPOWERED) 56 non-fatal
- MACHINERY 35 non-fatal
- POWERED HAULAGE 16 non-fatal
- OTHER 12 non-fatal
Incident timeline
2025
1
2024
2
2022
2
2020
8
2019
13
2018
10
2017
15
2016
10
2015
13
2014
15
2013
17
2012
12
2011
17
2010
11
2009
14
2008
19
2007
18
2006
19
2005
23
2004
33
2003
1
2000
1
1998
3
1997
1
1996
4
1995
2
1994
3
1993
7
1992
5
1991
2
1990
2
1989
3
1988
1
Mines on record
- Irwindale Aggregates CA
- YAVAPAI PLANT 22 AZ
- Clarkdale Plant #24 AZ
- Bridgeport Plant TX
- Heidelberg Materials Little River Plant AR
- Coolidge Plant 65 AZ
- SERVTEX PLANT TX
- Arena Plant TX
- LAKE BRIDGEPORT QUARRY TX
- Sealy Plant TX
- Rosser Sand & Gravel TX
- Burnet Plant TX
- RIVER RANCH PLANT 40 AZ
- WHITNEY TX
- Bristol Sand & Gravel TX
- EAGLE LAKE PLANT TX
- Davis Plant OK
- Woodlands Plant TX
- Eagle Mills Plant AR
- Honest Ridge Plant TX
- CHICO QUARRY TX
- Stafford Plant TX
- PRESCOTT PLANT AR
- Exit 5 Sand & Gravel OK
- Spring Plant TX
- FERRIS NORTH PLANT TX
- HUNTSVILLE PLANT TX
- PEDERNAL PLANT NM
- Skaneateles Plant NY
- Tascosa Plant TX
- Clayton Aggregates CA
- HOLLY SPRINGS QUARRY NC
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The full compliance file on Martin Marietta Southern California Aggregates,LLC
A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.