Key Takeaway

Permanente Cement Plant & Quarry is a temporarily idled facility mine producing Stone, located in Cupertino, Santa Clara County, CA. It has 1,698 violations on record (346 S&S) and $2.8M in proposed penalties. Operated by Lehigh Southwest Cement Co..

Permanente Cement Plant & Quarry

Temporarily Idled Facility Stone

Operator: Lehigh Southwest Cement Co.

Controller: Heidelberg Materials AG

Location: Cupertino, Santa Clara County, CA

1,698
Violations
346
S&S Violations
197
Accidents
$2.8M
Penalties

Recent Violations

View all 1,698 →
Date Section S&S Negligence Penalty
10/23/2024 56.14101(a)(3) Non-S&S ModNegligence $147
10/23/2024 56.14100(b) Non-S&S ModNegligence $147
04/25/2024 50.30(a) Non-S&S LowNegligence $147
02/08/2024 56.12018 Non-S&S ModNegligence $147
02/08/2024 56.11001 Non-S&S ModNegligence $204
02/08/2024 56.12032 Non-S&S LowNegligence $147
02/08/2024 46.5 S&S ModNegligence $504
02/07/2024 50.30(a) Non-S&S LowNegligence $147
02/06/2024 56.20010 Non-S&S ModNegligence $204
09/27/2023 56.14211(c) S&S LowNegligence $346
09/27/2023 56.14211(c) S&S LowNegligence $346
06/07/2023 56.20013 Non-S&S LowNegligence $143
06/07/2023 56.12030 S&S ModNegligence $439
06/07/2023 56.12020 Non-S&S ModNegligence $198
06/07/2023 56.20010 Non-S&S LowNegligence $143
03/14/2023 46.6 Non-S&S ModNegligence $1,006
03/14/2023 56.14115(b) Non-S&S LowNegligence $182
09/08/2022 56.20010 Non-S&S ModNegligence $840
02/08/2022 56.4201(a)(2) Non-S&S ModNegligence $407
01/16/2022 50.30(a) Non-S&S LowNegligence $133

Accidents & Injuries

View all 197 →
Date Classification Injury Days Lost
09/27/2023 FALLING/SLIDING/ROLLING MATERIALS DYS AWY FRM WRK & RESTRCTD ACT 88d lost, 52d restricted
02/08/2023 SLIP OR FALL OF PERSON DAYS RESTRICTED ACTIVITY ONLY 55d restricted
02/16/2020 HANDLING OF MATERIALS DAYS AWAY FROM WORK ONLY 340d lost
02/11/2020 ELECTRICAL NO DYS AWY FRM WRK,NO RSTR ACT None
01/07/2019 HANDTOOLS (NONPOWERED) NO DYS AWY FRM WRK,NO RSTR ACT None
01/04/2019 FIRE ACCIDENT ONLY None
12/30/2017 POWERED HAULAGE FATALITY Fatal
12/01/2017 HANDLING OF MATERIALS NO DYS AWY FRM WRK,NO RSTR ACT None
10/25/2017 STRIKING OR BUMPING DAYS RESTRICTED ACTIVITY ONLY 80d restricted
10/03/2017 POWERED HAULAGE DYS AWY FRM WRK & RESTRCTD ACT 23d lost, 56d restricted

Inspections

View all 218 →
Begin End Hours Inspectors
08/13/2025 08/13/2025 5.00 1
06/17/2025 06/18/2025 2.00 1
03/27/2025 03/27/2025 5.75 1
11/06/2024 11/07/2024 4.50 1
10/23/2024 10/24/2024 13.75 1
08/23/2024 08/26/2024 0.50 1
05/03/2024 05/03/2024 7.50 1
03/25/2024 03/26/2024 5.00 1
02/28/2024 02/28/2024 7.25 1
02/07/2024 02/08/2024 18.75 1

Mine Details

MSHA Mine ID0404075
Mine TypeFacility
StatusTemporarily Idled
CommodityStone
SIC DescriptionCement
Days/Week0.0
Hours/Shift0.0
Coordinates37.3200000, -122.0869440
Nearest TownCupertino

Frequently Asked Questions

How many MSHA violations does Permanente Cement Plant & Quarry have?

Permanente Cement Plant & Quarry has 1698 MSHA violations on record, of which 346 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $2.8M.

What type of mine is Permanente Cement Plant & Quarry?

Permanente Cement Plant & Quarry is a Facility mine producing Stone, located in Cupertino, Santa Clara County, CA. It currently has 0 employees.

Has anyone been injured or killed at Permanente Cement Plant & Quarry?

According to MSHA records, Permanente Cement Plant & Quarry has 197 reported accident/injury records and 1 fatalities on file.

Who operates Permanente Cement Plant & Quarry?

Permanente Cement Plant & Quarry is operated by Lehigh Southwest Cement Co. and controlled by Heidelberg Materials AG. MSHA Mine ID: 0404075.