Data / Mines / Superior Ready Mix Concrete L P
Superior Ready Mix Concrete L P: 147 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Superior Ready Mix Concrete L P (MSHA operator ID L10579) operates 4 open mines with 37 employees in California, mostly construction sand and gravel. Since January 1, 2022 MSHA inspectors issued it 147 citations and orders with $101,641 in proposed penalties, and it reported 8 injury or illness cases. Data from MSHA, November 6, 2026.
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- MSHA operator ID
- L10579
- Open mines
- 4
- Employees at open mines
- 37
- States
- California
- Parent company
- Vulcan Materials Company
- Citations and orders since January 1, 2022
- 147
- Significant and substantial
- 41 (27.9%)
- Closure orders
- 8
- High negligence or reckless
- 18
- Proposed penalties
- $101,641
- Amount paid so far
- $93,402
- Inspections
- 57
- Inspector hours on site
- 484
- Citations per inspection
- 2.58 (all mines 2.30)
- Accident reports
- 8
- Injury and illness cases
- 8
- Fatalities
- 0
- Latest MSHA record
- September 24, 2026
Open mines of Superior Ready Mix Concrete L P
Ranked by citations since January 1, 2022.
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Mission Gorge Plant | Superior Ready Mix Concrete L P | San Diego County, CA | Construction sand and gravel | 25 | 60 |
| Superior, Twin Oaks | Superior Ready Mix Concrete L P | San Diego County, CA | Crushed, broken stone | 7 | 29 |
| Dillon Road Pit | Superior Ready Mix Concrete L P | Riverside County, CA | Construction sand and gravel | 3 | 20 |
| Frink Pit | Superior Ready Mix Concrete L P | Imperial County, CA | Construction sand and gravel | 2 | 3 |
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 | 28 | 8 | $11,429 | 2 |
| 2023 | 53 | 21 | $41,705 | 2 |
| 2024 | 20 | 5 | $17,964 | 2 |
| 2025 | 40 | 7 | $23,229 | 2 |
| 2026 | 6 | 0 | $7,314 | 0 |
Standards cited most at Superior Ready Mix Concrete L P
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 56.14107 | Surface metal and nonmetal mines | 18 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 12 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 12 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 10 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.16001 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 5 |
| 30 CFR 46.7 | Training at sand, gravel and surface stone mines | 5 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.20011 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 2 |
Injury and illness cases at Superior Ready Mix Concrete L P
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 6 |
| No lost time, or an occupational illness | 2 |
What the accident reports at Superior Ready Mix Concrete L P describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Slip or fall of person | 3 |
| Disorders (repeated trauma) | 2 |
| Handtools (nonpowered) | 1 |
| Handling of materials | 1 |
| Powered haulage | 1 |
Equipment named in accident reports at Superior Ready Mix Concrete L P
| Equipment | Reports |
|---|---|
| Front-end loader | 3 |
| Hand tools (not powered) | 1 |
| Crusher | 1 |
Commodities
| Main commodity | Open mines |
|---|---|
| Construction sand and gravel | 3 |
| Crushed, broken stone | 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.