Data / Mines / CalPortland Company
CalPortland Company: 28 open mines, 1,052 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
CalPortland Company (MSHA operator ID L11900) operates 28 open mines with 798 employees in California, Arizona, Oregon and other states, mostly construction sand and gravel. Since January 1, 2022 MSHA inspectors issued it 1,052 citations and orders with $976,103 in proposed penalties, and it reported 132 injury or illness cases, 1 of them fatal. Data from MSHA, November 6, 2026.
The request: Watch CalPortland Company (MSHA operator ID L11900): each new citation, each accident report and each new mine. $10 of work on sign-up, no card.
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- MSHA operator ID
- L11900
- Open mines
- 28
- Employees at open mines
- 798
- States
- California, Arizona, Oregon, Washington, Nevada
- Parent company
- Taiheiyo Cement Corp
- Citations and orders since January 1, 2022
- 1,052
- Significant and substantial
- 241 (22.9%)
- Closure orders
- 27
- High negligence or reckless
- 58
- Proposed penalties
- $976,103
- Amount paid so far
- $905,137
- Inspections
- 351
- Inspector hours on site
- 4,694
- Citations per inspection
- 3.00 (all mines 2.30)
- Accident reports
- 147
- Injury and illness cases
- 132
- Fatalities
- 1
- Latest MSHA record
- November 1, 2026
Open mines of CalPortland Company
Ranked by citations since January 1, 2022.
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Mojave Plant & Quarry | CalPortland Company | Kern County, CA | Cement | 133 | 276 |
| Redding Plant | CalPortland Company | Shasta County, CA | Cement | 73 | 222 |
| Oro Grande Quarry | CalPortland Company | San Bernardino County, CA | Cement | 137 | 146 |
| Snoqualmie S&G DBA CalPortland Company | CalPortland Company | King County, WA | Construction sand and gravel | 29 | 86 |
| Rillito Plant | CalPortland Company | Pima County, AZ | Cement | 150 | 58 |
| Grimes Rock a CalPortland Company | CalPortland Company | Ventura County, CA | Construction sand and gravel | 14 | 43 |
| Lake View Quarry | CalPortland Company | Clark County, NV | Gypsum | 5 | 37 |
| Dupont Pit | CalPortland Company | Pierce County, WA | Construction sand and gravel | 57 | 34 |
| Santosh DBA CalPortland | CalPortland Company | Columbia County, OR | Construction sand and gravel | 40 | 34 |
| Jackrabbit Aggregates | CalPortland Company | Maricopa County, AZ | Construction sand and gravel | 15 | 31 |
| Garey Rock Plant | CalPortland Company | Santa Barbara County, CA | Construction sand and gravel | 10 | 23 |
| Rocky Canyon Plant | CalPortland Company | San Luis Obispo County, CA | Crushed, broken granite | 14 | 19 |
| New River Plant | CalPortland Company | Maricopa County, AZ | Construction sand and gravel | 11 | 15 |
| Diablo Plant # 136 | CalPortland Company | Pinal County, AZ | Construction sand and gravel | 8 | 15 |
| Scheerer Quarry | CalPortland Company | San Bernardino County, CA | Sand, common | 11 | 14 |
| Vashon Sand and Gravel DBA CalPortland | CalPortland Company | King County, WA | Construction sand and gravel | 6 | 14 |
| White River Quarry | CalPortland Company | King County, WA | Crushed, broken stone | 10 | 13 |
| Orange Grove | CalPortland Company | Pima County, AZ | Construction sand and gravel | 16 | 11 |
| Rillito Quarry | CalPortland Company | Pima County, AZ | Crushed, broken stone | 23 | 10 |
| Canby Sand & Gravel DBA CalPortland | CalPortland Company | Clackamas County, OR | Crushed, broken stone | 6 | 10 |
| Twin Peaks Aggregate | CalPortland Company | Pima County, AZ | Construction sand and gravel | 6 | 7 |
| Sanderling Dredge | CalPortland Company | Columbia County, OR | Sand, industrial | 7 | 5 |
| Agua Fria Pit | CalPortland Company | Santa Cruz County, AZ | Construction sand and gravel | 4 | 4 |
| Gem Hill Mine Site | CalPortland Company | Kern County, CA | Cement | 1 | 3 |
| Bluelake DBA CalPortland | CalPortland Company | Multnomah County, OR | Crushed, broken stone | 3 | 2 |
| Baxter Mine | CalPortland Company | San Bernardino County, CA | Iron ore | 3 | 1 |
| Empire Mountain Quarry | CalPortland Company | Pima County, AZ | Construction sand and gravel | 3 | 0 |
| Paso Robles Plant | CalPortland Company | San Luis Obispo County, CA | Construction sand and gravel | 3 | 0 |
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 | 165 | 38 | $283,850 | 35 |
| 2023 | 288 | 83 | $213,199 | 32 |
| 2024 | 218 | 43 | $231,832 | 21 |
| 2025 | 233 | 54 | $188,555 | 19 |
| 2026 | 148 | 23 | $58,667 | 25 |
Standards cited most at CalPortland Company
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 56.20003 | Surface metal and nonmetal mines | 118 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 60 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 60 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 56 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 53 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 46 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 38 |
| 30 CFR 56.16001 | Surface metal and nonmetal mines | 27 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 26 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 23 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 22 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 21 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 21 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 20 |
| 30 CFR 56.14207 | Surface metal and nonmetal mines | 20 |
Injury and illness cases at CalPortland Company
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Fatality | 1 |
| Permanent disability | 1 |
| Days away from work or restricted activity | 97 |
| No lost time, or an occupational illness | 33 |
What the accident reports at CalPortland Company describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 47 |
| Slip or fall of person | 23 |
| Powered haulage | 17 |
| Handtools (nonpowered) | 14 |
| Machinery | 13 |
| Other | 7 |
| Ignition or explosion of gas or dust | 5 |
| Entrapment | 4 |
| Striking or bumping | 4 |
| Nonpowered haulage | 3 |
Equipment named in accident reports at CalPortland Company
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 14 |
| Front-end loader | 9 |
| Ore haulage trucks - off highway trucks | 8 |
| Hand tools (powered) | 7 |
| Elevator | 5 |
| Conveyor | 5 |
| Machine | 3 |
| Trucks | 3 |
| Raw coal storage | 3 |
| Shovel | 2 |
Commodities
| Main commodity | Open mines |
|---|---|
| Construction sand and gravel | 14 |
| Cement | 5 |
| Crushed, broken stone | 4 |
| Iron ore | 1 |
| Crushed, broken granite | 1 |
| Sand, common | 1 |
| Gypsum | 1 |
| Sand, industrial | 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.