ORO GRANDE QUARRY
Active
Facility
Stone
Operator: CALPORTLAND
Controller: Taiheiyo Cement Corp
Location: Oro Grande, San Bernardino County, CA
Employees: 137
1,514
Violations
374
S&S Violations
292
Accidents
$1.3M
Penalties
Recent Violations
View all 1,514 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 10/21/2025 | 56.14100(a) | S&S | LowNegligence | $1,431 |
| 10/21/2025 | 56.12008 | Non-S&S | LowNegligence | $151 |
| 10/20/2025 | 56.20003(a) | S&S | LowNegligence | $165 |
| 10/20/2025 | 56.18002(b) | Non-S&S | LowNegligence | $151 |
| 10/20/2025 | 56.14107(a) | Non-S&S | ModNegligence | $151 |
| 10/20/2025 | 56.14201(b) | Non-S&S | LowNegligence | $151 |
| 10/16/2025 | 56.4200(b)(2) | Non-S&S | LowNegligence | $151 |
| 10/16/2025 | 56.14112(a)(1) | Non-S&S | LowNegligence | $151 |
| 10/16/2025 | 56.20003(a) | Non-S&S | ModNegligence | $151 |
| 10/16/2025 | 56.20003(c) | Non-S&S | HighNegligence | $245 |
| 10/15/2025 | 56.20003(a) | S&S | LowNegligence | $165 |
| 10/15/2025 | 56.20003(a) | S&S | LowNegligence | $165 |
| 10/15/2025 | 56.12004 | Non-S&S | LowNegligence | $151 |
| 10/15/2025 | 56.4102 | S&S | LowNegligence | $549 |
| 10/15/2025 | 56.14107(a) | Non-S&S | LowNegligence | $151 |
| 10/14/2025 | 56.18002(b) | Non-S&S | LowNegligence | $151 |
| 10/14/2025 | 56.14112(b) | Non-S&S | LowNegligence | $151 |
| 10/14/2025 | 56.9300(b) | Non-S&S | LowNegligence | $151 |
| 10/14/2025 | 56.4601 | Non-S&S | ModNegligence | $151 |
| 10/14/2025 | 56.9300(d) | Non-S&S | LowNegligence | $151 |
Accidents & Injuries
View all 292 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 04/24/2025 | MACHINERY | DAYS RESTRICTED ACTIVITY ONLY | 5d restricted |
| 03/19/2025 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 42d restricted |
| 01/23/2025 | SLIP OR FALL OF PERSON | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 10/02/2024 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 17d restricted |
| 09/26/2023 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 09/17/2023 | SLIP OR FALL OF PERSON | DYS AWY FRM WRK & RESTRCTD ACT | 19d lost, 8d restricted |
| 06/01/2023 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 12d restricted |
| 03/13/2023 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 6d restricted |
| 02/08/2023 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 36d restricted |
| 01/20/2023 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 65d restricted |
Inspections
View all 188 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 11/14/2025 | 11/14/2025 | 7.25 | 1 |
| 10/14/2025 | 10/22/2025 | 161.75 | 3 |
| 08/04/2025 | 08/12/2025 | 127.50 | 3 |
| 02/03/2025 | 02/06/2025 | 107.00 | 3 |
| 08/12/2024 | 08/15/2024 | 93.50 | 3 |
| 06/06/2024 | 09/25/2024 | 88.00 | 1 |
| 11/16/2023 | 11/17/2023 | 6.00 | 1 |
| 10/23/2023 | 10/24/2023 | 12.00 | 1 |
| 10/16/2023 | 10/25/2023 | 95.75 | 2 |
| 07/27/2023 | 07/27/2023 | 4.25 | 2 |
Mine Details
MSHA Mine ID0400011
Mine TypeFacility
StatusActive
CommodityStone
SIC DescriptionCement
Employees137
Days/Week7.0
Hours/Shift8.0
Coordinates34.6063890, -117.3358330
Nearest TownOro Grande
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Frequently Asked Questions
How many MSHA violations does ORO GRANDE QUARRY have?
ORO GRANDE QUARRY has 1514 MSHA violations on record, of which 374 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $1.3M.
What type of mine is ORO GRANDE QUARRY?
ORO GRANDE QUARRY is a Facility mine producing Stone, located in Oro Grande, San Bernardino County, CA. It currently has 137 employees.
Has anyone been injured or killed at ORO GRANDE QUARRY?
According to MSHA records, ORO GRANDE QUARRY has 292 reported accident/injury records and 2 fatalities on file.
Who operates ORO GRANDE QUARRY?
ORO GRANDE QUARRY is operated by CALPORTLAND and controlled by Taiheiyo Cement Corp. MSHA Mine ID: 0400011.