Martin Marietta Northern California Aggregates,LLC operator
Controlled by
Martin Marietta Materials Inc
MSHA operator ID: 0064607
- Fatalities
- 0
- Total incidents
- 44
- Mines on record
- 6
- Years on record
- 2006–2024
Compliance record
MSHA citations since 2005
550
citations
119
significant & substantial
$289,290
proposed penalties
$283,549
paid to date
98% of proposed penalties paid to date, a $5,741 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2005
343
inspections on record
5,407
inspection hours
10.2
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.550 citations across 5,407 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.$289K
proposed penalties
$284K
current assessed
$284K
paid to date
$458
outstanding
543 assessments are final orders; 16 contested dockets.
As of the most recent assessment on 2026-04-27.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Top causes
- HANDLING OF MATERIALS 11 non-fatal
- SLIP OR FALL OF PERSON 9 non-fatal
- POWERED HAULAGE 7 non-fatal
- MACHINERY 6 non-fatal
- HANDTOOLS (NONPOWERED) 4 non-fatal
- OTHER 3 non-fatal
Incident timeline
2024
1
2023
1
2022
1
2021
2
2018
2
2017
2
2015
4
2014
2
2013
4
2012
1
2011
2
2010
6
2009
5
2008
3
2007
2
2006
6
Mines on record
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The full compliance file on Martin Marietta Northern 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.