Black Mountain Quarry

Active Facility Stone

Operator: CEMEX Construction Materials Pacific, LLC

Controller: Cemex S A

Location: Apple Valley, San Bernardino County, CA

Employees: 133

1,504
Violations
422
S&S Violations
166
Accidents
$1.9M
Penalties

Recent Violations

View all 1,504 →
Date Section S&S Negligence Penalty
10/07/2025 56.4011 Non-S&S LowNegligence $151
10/07/2025 56.12008 Non-S&S LowNegligence $151
10/07/2025 45.4(a) Non-S&S HighNegligence $151
10/07/2025 46.6(a) Non-S&S HighNegligence $610
10/07/2025 56.14103(b) Non-S&S ModNegligence $151
10/07/2025 56.16001 Non-S&S ModNegligence $151
10/07/2025 56.20003(a) S&S ModNegligence $151
10/07/2025 56.12023 S&S ModNegligence $151
10/07/2025 56.16001 Non-S&S LowNegligence $151
10/07/2025 56.18002(a) S&S HighNegligence $366
10/07/2025 56.4402 Non-S&S LowNegligence $151
10/06/2025 56.12004 Non-S&S LowNegligence $245
10/06/2025 56.12032 Non-S&S LowNegligence $151
10/06/2025 56.14107(a) Non-S&S LowNegligence $151
10/06/2025 56.9300(d) S&S LowNegligence $366
10/06/2025 56.20003(a) S&S LowNegligence $366
10/06/2025 56.16001 Non-S&S LowNegligence $151
10/06/2025 56.15001 Non-S&S LowNegligence $151
10/02/2025 56.20003(a) S&S ModNegligence $959
10/02/2025 56.9300(d)(1) Non-S&S LowNegligence $151

Accidents & Injuries

View all 166 →
Date Classification Injury Days Lost
01/28/2026 HANDLING OF MATERIALS DAYS AWAY FROM WORK ONLY None
01/26/2026 ENTRAPMENT ACCIDENT ONLY None
01/20/2026 ENTRAPMENT ACCIDENT ONLY None
09/12/2025 SLIP OR FALL OF PERSON DAYS RESTRICTED ACTIVITY ONLY 15d restricted
05/20/2025 MACHINERY DAYS AWAY FROM WORK ONLY None
04/16/2025 ENTRAPMENT ACCIDENT ONLY None
03/04/2025 HANDLING OF MATERIALS DAYS RESTRICTED ACTIVITY ONLY 4d restricted
12/03/2024 SLIP OR FALL OF PERSON DAYS AWAY FROM WORK ONLY 2d lost
04/22/2024 HANDLING OF MATERIALS NO DYS AWY FRM WRK,NO RSTR ACT None
04/10/2024 MACHINERY DAYS RESTRICTED ACTIVITY ONLY 20d restricted

Inspections

View all 192 →
Begin End Hours Inspectors
02/12/2026 02/17/2026 14.00 1
01/12/2026 01/12/2026 10.50 1
12/29/2025 12/29/2025 11.25 1
10/01/2025 10/08/2025 154.25 3
06/23/2025 07/01/2025 173.25 4
11/18/2024 11/26/2024 161.50 3
05/06/2024 05/15/2024 172.50 3
04/22/2024 04/30/2024 39.50 1
02/05/2024 02/09/2024 120.50 3
12/21/2023 03/04/2024 31.00 1

Mine Details

MSHA Mine ID0405701
Mine TypeFacility
StatusActive
CommodityStone
SIC DescriptionCement
Employees133
Days/Week7.0
Hours/Shift12.0
Coordinates34.6169440, -117.1280560
Nearest TownApple Valley

Frequently Asked Questions

How many MSHA violations does Black Mountain Quarry have?

Black Mountain Quarry has 1504 MSHA violations on record, of which 422 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $1.9M.

What type of mine is Black Mountain Quarry?

Black Mountain Quarry is a Facility mine producing Stone, located in Apple Valley, San Bernardino County, CA. It currently has 133 employees.

Has anyone been injured or killed at Black Mountain Quarry?

According to MSHA records, Black Mountain Quarry has 166 reported accident/injury records and 0 fatalities on file.

Who operates Black Mountain Quarry?

Black Mountain Quarry is operated by CEMEX Construction Materials Pacific, LLC and controlled by Cemex S A. MSHA Mine ID: 0405701.