Data / Mines / Idaho / Portable 1
Portable 1, Cassia County, Idaho: 2 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Portable 1 is an intermittent construction sand and gravel surface mine in Cassia County, Idaho, operated by Star Stone Quarries with 8 employees on MSHA's record (mine ID 1001960). Since January 1, 2022 MSHA inspectors issued 2 citations and orders there with $294 in proposed penalties, and 0 accident reports were filed there, with no injury or illness cases.
The request: Watch Portable 1 (MSHA mine ID 1001960) in Cassia County, Idaho: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 1001960
- Status
- Intermittent since September 28, 1999
- Main commodity
- Construction sand and gravel
- Mine type
- Surface
- County
- Cassia County, Idaho
- Nearest town
- Oakley
- Operator
- Star Stone Quarries
- Employees
- 8
- MSHA field office
- Boise ID Field Office
- Citations and orders since January 1, 2022
- 2
- Significant and substantial
- 0 (0.0%)
- Closure orders
- 0
- High negligence or reckless
- 0
- Proposed penalties
- $294
- Amount paid so far
- $294
- Inspections
- 6
- Inspector hours on site
- 10
- Citations per inspection
- 0.33 (all mines 2.30)
- Accident reports
- 0
- Injury and illness cases
- 0
- Fatalities
- 0
- Latest MSHA record
- October 6, 2026
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 |
|---|---|---|---|---|
| 2023 | 1 | 0 | $143 | 0 |
| 2025 | 1 | 0 | $151 | 0 |
Standards cited most at Portable 1
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 56.23003 | Surface metal and nonmetal mines | 1 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 1 |
Other open mines in Cassia County, Idaho
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Rocky Mountain Quartzite Quarry | Northern Stone Supply Inc | Cassia County, ID | Dimension stone | 12 | 12 |
| Birch Creek | Lone Pine Natural Stone, LLC | Cassia County, ID | Dimension stone | 5 | 10 |
| Moulton Yard | Star Stone Quarries | Cassia County, ID | Dimension stone | 12 | 9 |
| Hiraya Charcoal | Hiraya Enterprise LLC | Cassia County, ID | Dimension stone | 4 | 8 |
| Six S Mine | High Output Construction | Cassia County, ID | Construction sand and gravel | 3 | 7 |
| Rock Garden | Oakley Mountain Corp | Cassia County, ID | Dimension quartzite | 23 | 6 |
| Rock Ridge | Oakley Mountain Corp | Cassia County, ID | Dimension stone | 5 | 3 |
| Mobile #4 | Bolinder Resources | Cassia County, ID | Construction sand and gravel | 18 | 2 |
| Oakley Valley Stone Inc | Oakley Valley Stone Inc | Cassia County, ID | Dimension stone | 12 | 2 |
| Summit Creek Quarry | Star Stone Quarries | Cassia County, ID | Crushed, broken basalt | 3 | 2 |
| Jim Sage Quarry | Bne Investments Inc. | Cassia County, ID | Crushed, broken basalt | 2 | 2 |
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.