Key Takeaway

Irwindale Aggregates is a active surface mine producing SandAndGravel, located in Irwindale, Los Angeles County, CA. It has 230 violations on record (41 S&S) and $71K in proposed penalties. Operated by Martin Marietta Southern California Aggregates,LLC.

Irwindale Aggregates

Active Surface SandAndGravel

Operator: Martin Marietta Southern California Aggregates,LLC

Controller: Martin Marietta Materials Inc

Location: Irwindale, Los Angeles County, CA

Employees: 43

230
Violations
41
S&S Violations
59
Accidents
$71K
Penalties

Recent Violations

View all 230 →
Date Section S&S Negligence Penalty
07/30/2025 56.14107(a) Non-S&S LowNegligence $151
03/12/2025 56.16005 Non-S&S ModNegligence $151
12/19/2023 56.20003(a) Non-S&S LowNegligence $147
08/15/2023 56.12004 Non-S&S LowNegligence $143
08/15/2023 56.12025 Non-S&S LowNegligence $143
03/15/2023 56.12002 Non-S&S LowNegligence $518
04/29/2022 46.6(b) Non-S&S ModNegligence $148
04/28/2022 56.11001 S&S ModNegligence $215
04/28/2022 56.14103(c)(1) Non-S&S ModNegligence $144
02/03/2022 56.14100(b) S&S ModNegligence $1,156
02/01/2022 56.14112(b) S&S ModNegligence $1,156
02/01/2022 56.14100(b) Non-S&S LowNegligence $133
02/01/2022 56.12004 Non-S&S ModNegligence $234
02/01/2022 46.5 Non-S&S ModNegligence $234
08/02/2021 56.20003(a) Non-S&S LowNegligence $125
08/02/2021 56.12004 Non-S&S LowNegligence $237
03/11/2021 47.41(a) Non-S&S LowNegligence $125
03/09/2021 56.14100(a) Non-S&S LowNegligence $125
07/01/2020 56.12004 Non-S&S LowNegligence $123
06/23/2020 56.4603(b) Non-S&S LowNegligence $123

Accidents & Injuries

View all 59 →
Date Classification Injury Days Lost
10/16/2025 SLIP OR FALL OF PERSON DYS AWY FRM WRK & RESTRCTD ACT 3d lost, 3d restricted
03/07/2024 HANDLING OF MATERIALS DAYS RESTRICTED ACTIVITY ONLY 9d restricted
01/14/2024 HANDTOOLS (NONPOWERED) DAYS RESTRICTED ACTIVITY ONLY 1d restricted
04/19/2022 SLIP OR FALL OF PERSON DAYS RESTRICTED ACTIVITY ONLY 7d restricted
04/07/2020 HANDTOOLS (NONPOWERED) NO DYS AWY FRM WRK,NO RSTR ACT None
02/05/2020 HANDLING OF MATERIALS DAYS RESTRICTED ACTIVITY ONLY 7d restricted
11/25/2019 HANDLING OF MATERIALS DAYS RESTRICTED ACTIVITY ONLY 16d restricted
07/31/2018 HANDLING OF MATERIALS DAYS RESTRICTED ACTIVITY ONLY 385d restricted
06/08/2018 HANDLING OF MATERIALS DYS AWY FRM WRK & RESTRCTD ACT 60d lost, 133d restricted
11/13/2017 HANDTOOLS (NONPOWERED) DAYS RESTRICTED ACTIVITY ONLY 21d restricted

Inspections

View all 81 →
Begin End Hours Inspectors
10/07/2025 10/30/2025 55.50 1
07/30/2025 07/31/2025 22.75 1
03/12/2025 03/13/2025 32.25 2
07/09/2024 07/11/2024 31.50 1
12/18/2023 12/20/2023 27.25 1
08/16/2023 08/16/2023 3.25 1
08/14/2023 08/16/2023 33.25 1
05/17/2023 05/17/2023 2.50 1
03/20/2023 03/20/2023 7.00 1
03/14/2023 03/17/2023 24.50 1

Mine Details

MSHA Mine ID0401838
Mine TypeSurface
StatusActive
CommoditySandAndGravel
SIC DescriptionConstruction Sand and Gravel
Employees43
Days/Week5.0
Hours/Shift8.0
Coordinates34.1111110, -117.9736110
Nearest TownIrwindale

Frequently Asked Questions

How many MSHA violations does Irwindale Aggregates have?

Irwindale Aggregates has 230 MSHA violations on record, of which 41 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $71K.

What type of mine is Irwindale Aggregates?

Irwindale Aggregates is a Surface mine producing SandAndGravel, located in Irwindale, Los Angeles County, CA. It currently has 43 employees.

Has anyone been injured or killed at Irwindale Aggregates?

According to MSHA records, Irwindale Aggregates has 59 reported accident/injury records and 0 fatalities on file.

Who operates Irwindale Aggregates?

Irwindale Aggregates is operated by Martin Marietta Southern California Aggregates,LLC and controlled by Martin Marietta Materials Inc. MSHA Mine ID: 0401838.