Key Takeaway

Littlerock Quarry is a active surface mine producing SandAndGravel, located in Littlerock, Los Angeles County, CA. It has 265 violations on record (93 S&S) and $124K in proposed penalties. Operated by Hi-Grade Materials Co.

Littlerock Quarry

Active Surface SandAndGravel

Operator: Hi-Grade Materials Co

Controller: Robar Enterprises Inc

Location: Littlerock, Los Angeles County, CA

Employees: 13

265
Violations
93
S&S Violations
26
Accidents
$124K
Penalties

Recent Violations

View all 265 →
Date Section S&S Negligence Penalty
01/08/2025 56.4203 Non-S&S LowNegligence $151
01/08/2025 56.14100(b) Non-S&S LowNegligence $151
01/08/2025 56.12008 Non-S&S LowNegligence $432
01/08/2025 56.14112(b) Non-S&S LowNegligence $193
01/07/2025 56.12018 Non-S&S LowNegligence $151
01/07/2025 56.16006 Non-S&S LowNegligence $151
01/07/2025 56.14205 Non-S&S LowNegligence $151
01/07/2025 56.16006 Non-S&S LowNegligence $151
01/07/2025 56.11003 Non-S&S LowNegligence $151
01/07/2025 56.11012 Non-S&S ModNegligence $288
10/16/2024 50.30(a) Non-S&S HighNegligence $147
08/14/2024 56.14107(a) S&S ModNegligence $2,253
08/13/2024 56.12004 Non-S&S LowNegligence $147
08/13/2024 56.12008 Non-S&S LowNegligence $260
08/13/2024 56.14112(b) Non-S&S LowNegligence $260
08/13/2024 56.20003(a) S&S LowNegligence $388
08/13/2024 56.12004 S&S LowNegligence $1,287
08/13/2024 56.14112(a)(1) Non-S&S LowNegligence $147
08/13/2024 56.20003(a) S&S LowNegligence $388
08/13/2024 46.9(c)(1)(ii) Non-S&S HighNegligence $172

Accidents & Injuries

View all 26 →
Date Classification Injury Days Lost
06/14/2024 FIRE FATALITY Fatal
03/11/2023 SLIP OR FALL OF PERSON DAYS AWAY FROM WORK ONLY 324d lost
03/25/2021 HANDLING OF MATERIALS NO DYS AWY FRM WRK,NO RSTR ACT None
12/16/2020 MACHINERY ACCIDENT ONLY None
10/03/2020 HANDLING OF MATERIALS DAYS AWAY FROM WORK ONLY 179d lost
05/02/2016 HANDTOOLS (NONPOWERED) DYS AWY FRM WRK & RESTRCTD ACT 61d lost, 52d restricted
02/04/2016 HANDTOOLS (NONPOWERED) DAYS RESTRICTED ACTIVITY ONLY 64d restricted
05/20/2014 HANDLING OF MATERIALS DAYS RESTRICTED ACTIVITY ONLY 13d restricted
10/16/2013 SLIP OR FALL OF PERSON DAYS RESTRICTED ACTIVITY ONLY 48d restricted
07/09/2012 HANDTOOLS (NONPOWERED) DYS AWY FRM WRK & RESTRCTD ACT 30d lost, 14d restricted

Inspections

View all 117 →
Begin End Hours Inspectors
11/20/2025 11/20/2025 4.25 1
09/02/2025 09/05/2025 21.00 1
08/14/2025 08/14/2025 4.50 1
06/04/2025 06/04/2025 4.50 1
03/18/2025 03/19/2025 4.50 1
01/06/2025 01/08/2025 47.75 2
11/05/2024 11/06/2024 2.75 1
08/20/2024 08/20/2024 4.50 1
08/19/2024 12/09/2024 2.00 1
08/12/2024 08/15/2024 26.50 1

Mine Details

MSHA Mine ID0404802
Mine TypeSurface
StatusActive
CommoditySandAndGravel
SIC DescriptionConstruction Sand and Gravel
Employees13
Days/Week5.0
Hours/Shift8.0
Coordinates34.5427770, -118.0188880
Nearest TownLittlerock

Frequently Asked Questions

How many MSHA violations does Littlerock Quarry have?

Littlerock Quarry has 265 MSHA violations on record, of which 93 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $124K.

What type of mine is Littlerock Quarry?

Littlerock Quarry is a Surface mine producing SandAndGravel, located in Littlerock, Los Angeles County, CA. It currently has 13 employees.

Has anyone been injured or killed at Littlerock Quarry?

According to MSHA records, Littlerock Quarry has 26 reported accident/injury records and 1 fatalities on file.

Who operates Littlerock Quarry?

Littlerock Quarry is operated by Hi-Grade Materials Co and controlled by Robar Enterprises Inc. MSHA Mine ID: 0404802.