Data / Mines / Idaho / Nonmetal mines
Nonmetal mineral mines in Idaho: 17 open mines
MSHA lists 17 open nonmetal mineral mines in Idaho, run by 15 operators and employing 417 people. Since January 1, 2022 its inspectors issued 361 citations and orders there with $372,666 in proposed penalties, and operators reported 25 injury or illness cases. The operators with the most open mines are Hess Pumice Products Inc; E & S Mining & Trucking Co Inc; Bear River Zeolite Company. Data from MSHA, November 6, 2026.
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- Open mines
- 17
- Operators
- 15
- Employees
- 417
- Active
- 9
- Intermittent
- 8
- Mines run by individuals, counted and not listed
- 1
- Citations and orders since January 1, 2022
- 361
- Significant and substantial
- 81 (22.4%)
- Closure orders
- 7
- High negligence or reckless
- 28
- Proposed penalties
- $372,666
- Amount paid so far
- $215,124
- Inspections
- 186
- Inspector hours on site
- 1,700
- Citations per inspection
- 1.94 (all mines 2.30)
- Accident reports
- 26
- Injury and illness cases
- 25
- Fatalities
- 0
- Latest MSHA record
- November 3, 2026
Operators with the most open mines in Idaho
Ranked by open mines, then by citations. Sole proprietors and individuals are not listed.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Hess Pumice Products Inc | 2 | 91 | 73 | $98,172 | 0 |
| E & S Mining & Trucking Co Inc | 2 | 7 | 5 | $755 | 0 |
| Bear River Zeolite Company | 1 | 13 | 85 | $75,945 | 3 |
| Ida-Ore Mining, LLC | 1 | 9 | 68 | $160,360 | 1 |
| J R Simplot Company | 1 | 235 | 61 | $26,065 | 14 |
| Valley Ready Mix Inc | 1 | 2 | 16 | $3,170 | 1 |
| Walters Ready Mix Inc | 1 | 2 | 16 | $2,292 | 0 |
| Clayton's Calcium Inc | 1 | 5 | 11 | $1,653 | 0 |
| Mickelsen Construction, Inc | 1 | 2 | 11 | $2,053 | 1 |
| Covia Solutions LLC | 1 | 14 | 7 | $1,027 | 2 |
| Carco Mineral Resources Inc | 1 | 8 | 5 | $739 | 0 |
| Kloepfer Inc | 1 | 5 | 1 | $133 | 0 |
| Ruveon LLC | 1 | 19 | 1 | $151 | 2 |
| Itafos Conda LLC | 1 | 2 | 0 | $0 | 1 |
Operators with the most citations in Idaho
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Bear River Zeolite Company | 1 | 13 | 85 | $75,945 | 3 |
| Hess Pumice Products Inc | 2 | 91 | 73 | $98,172 | 0 |
| Ida-Ore Mining, LLC | 1 | 9 | 68 | $160,360 | 1 |
| J R Simplot Company | 1 | 235 | 61 | $26,065 | 14 |
| Valley Ready Mix Inc | 1 | 2 | 16 | $3,170 | 1 |
| Walters Ready Mix Inc | 1 | 2 | 16 | $2,292 | 0 |
| Clayton's Calcium Inc | 1 | 5 | 11 | $1,653 | 0 |
| Mickelsen Construction, Inc | 1 | 2 | 11 | $2,053 | 1 |
| Covia Solutions LLC | 1 | 14 | 7 | $1,027 | 2 |
| E & S Mining & Trucking Co Inc | 2 | 7 | 5 | $755 | 0 |
| Carco Mineral Resources Inc | 1 | 8 | 5 | $739 | 0 |
| Kloepfer Inc | 1 | 5 | 1 | $133 | 0 |
| Ruveon LLC | 1 | 19 | 1 | $151 | 2 |
| Itafos Conda LLC | 1 | 2 | 0 | $0 | 1 |
Mines with the most citations
Open mines, ranked by citations and orders since January 1, 2022.
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Bear River Zeolite Company | Bear River Zeolite Company | Franklin County, ID | Zeolites | 13 | 85 |
| Ida-Ore | Ida-Ore Mining, LLC | Jerome County, ID | Zeolites | 9 | 68 |
| Smoky Canyon Mine | J R Simplot Company | Caribou County, ID | Phosphate rock | 235 | 61 |
| Malad Plant | Hess Pumice Products Inc | Oneida County, ID | Pumice | 74 | 53 |
| Wrights Creek Mine | Hess Pumice Products Inc | Oneida County, ID | Pumice | 17 | 20 |
| Thornton | Walters Ready Mix Inc | Madison County, ID | Sand, industrial | 2 | 16 |
| Shelley Pit | Valley Ready Mix Inc | Bonneville County, ID | Sand, industrial | 2 | 16 |
| New Acers | Clayton's Calcium Inc | Payette County, ID | Misc. nonmetallic mnls. | 5 | 11 |
| Plant 4 | Mickelsen Construction, Inc | Bonneville County, ID | Sand, industrial | 2 | 11 |
| Emmett Plant | Covia Solutions LLC | Gem County, ID | Misc. nonmetallic mnls. | 14 | 7 |
| Caldwell Plant | Carco Mineral Resources Inc | Ada County, ID | Common clays | 8 | 5 |
| Gooding Site | E & S Mining & Trucking Co Inc | Gooding County, ID | Pumice | 4 | 3 |
| Moonstone | E & S Mining & Trucking Co Inc | Idaho County, ID | Pumice | 3 | 2 |
| BFB & Ballard Mines | Ruveon LLC | Caribou County, ID | Phosphate rock | 19 | 1 |
| Plant 3 | Kloepfer Inc | Minidoka County, ID | Sand, industrial | 5 | 1 |
| Husky 1, North Dry Ridge | Itafos Conda LLC | Caribou County, ID | Phosphate rock | 2 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Pumice | 4 | 23.5% |
| Sand, industrial | 4 | 23.5% |
| Phosphate rock | 3 | 17.6% |
| Zeolites | 3 | 17.6% |
| Misc. nonmetallic mnls. | 2 | 11.8% |
| Common clays | 1 | 5.9% |
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 | 43 | 14 | $23,294 | 1 |
| 2023 | 115 | 33 | $112,076 | 2 |
| 2024 | 90 | 14 | $50,909 | 7 |
| 2025 | 76 | 18 | $175,908 | 7 |
| 2026 | 37 | 2 | $10,479 | 8 |
Standards cited most at nonmetal mineral mines in Idaho
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 | 49 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 38 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 38 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 14 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 14 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 13 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 13 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 12 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 10 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 10 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 10 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 9 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.14103 | Surface metal and nonmetal mines | 8 |
Injury and illness cases at nonmetal mineral mines in Idaho
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 11 |
| No lost time, or an occupational illness | 14 |
What the accident reports at nonmetal mineral mines in Idaho describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 10 |
| Slip or fall of person | 9 |
| Machinery | 2 |
| Powered haulage | 2 |
| Disorders (repeated trauma) | 1 |
| Handtools (nonpowered) | 1 |
| Electrical | 1 |
Equipment named in accident reports at nonmetal mineral mines in Idaho
| Equipment | Reports |
|---|---|
| Forklift | 3 |
| Hand tools (not powered) | 2 |
| Ore haulage trucks - off highway trucks | 2 |
| Hand tools (powered) | 2 |
| Milling machinery | 1 |
| Shovel | 1 |
| Crane | 1 |
Updated November 6, 2026. Read from US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets. 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.