Data / Mines / California / Permanente Cement Plant & Quarry
Permanente Cement Plant & Quarry: 16 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Permanente Cement Plant & Quarry is a temporarily idled cement processing facility in Santa Clara County, California, operated by Lehigh Southwest Cement Co. with 0 employees on MSHA's record (mine ID 0404075). Since January 1, 2022 MSHA inspectors issued 16 citations and orders there with $4,634 in proposed penalties, and 3 accident reports were filed there, with 3 injury or illness cases.
The request: Watch Permanente Cement Plant & Quarry (MSHA mine ID 0404075) in Santa Clara County, California: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 0404075
- Status
- Temporarily Idled since July 22, 2025
- Main commodity
- Cement
- Mine type
- Facility
- County
- Santa Clara County, California
- Nearest town
- Cupertino
- Operator
- Lehigh Southwest Cement Co.
- Parent company
- Heidelberg Materials AG
- Employees
- 0
- MSHA field office
- Vacaville CA Field Office
- Citations and orders since January 1, 2022
- 16
- Significant and substantial
- 1 (6.2%)
- Closure orders
- 1
- High negligence or reckless
- 0
- Proposed penalties
- $4,634
- Amount paid so far
- $4,634
- Inspections
- 27
- Inspector hours on site
- 95
- Citations per inspection
- 0.59 (all mines 2.30)
- Accident reports
- 3
- Injury and illness cases
- 3
- Fatalities
- 0
- Latest MSHA record
- September 23, 2026
- Citations issued to contractors here
- 4 ($1,343 proposed)
Citations and injury cases by year
Calendar years since 2022; 2026 runs to the date of the MSHA files.
| Year | Citations and orders | Significant and substantial | Proposed penalties | Injury and illness cases |
|---|---|---|---|---|
| 2022 | 3 | 0 | $1,380 | 0 |
| 2023 | 6 | 1 | $2,111 | 2 |
| 2024 | 7 | 0 | $1,143 | 0 |
| 2026 | 0 | 0 | $0 | 1 |
Standards cited most at Permanente Cement Plant & Quarry
Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.
| Standard | What the part covers | Citations |
|---|---|---|
| 30 CFR 56.20010 | Surface metal and nonmetal mines | 3 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 2 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 1 |
| 30 CFR 46.6 | Training at sand, gravel and surface stone mines | 1 |
| 30 CFR 56.14115 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.20013 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12030 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12020 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at Permanente Cement Plant & Quarry
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 2 |
| No lost time, or an occupational illness | 1 |
What the accident reports at Permanente Cement Plant & Quarry describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Falling/sliding/rolling materials | 1 |
| Slip or fall of person | 1 |
| Handling of materials | 1 |
Equipment named in accident reports at Permanente Cement Plant & Quarry
| Equipment | Reports |
|---|---|
| Front-end loader | 1 |
Other open mines in Santa Clara County, California
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Stevens Creek Quarry | Stevens Creek Quarry Inc | Santa Clara County, CA | Crushed, broken stone | 56 | 31 |
| Lexington Quarry | CalMat Co | Santa Clara County, CA | Crushed, broken stone | 4 | 19 |
| Cupertino Quarry | CalMat Co | Santa Clara County, CA | Construction sand and gravel | 10 | 1 |
| Curtner Quarry | DeSilva Gates Construction LLC | Santa Clara County, CA | Construction sand and gravel | 5 | 1 |
US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.