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
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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.