Data / Mines / Idaho / Crusher #1
Crusher #1, Ada County, Idaho: 18 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Crusher #1 is an active construction sand and gravel surface mine in Ada County, Idaho, operated by Knife River Corporation Mountain West with 7 employees on MSHA's record (mine ID 1002089). Since January 1, 2022 MSHA inspectors issued 18 citations and orders there with $7,326 in proposed penalties, and 3 accident reports were filed there, with 3 injury or illness cases.
The request: Watch Crusher #1 (MSHA mine ID 1002089) in Ada County, Idaho: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 1002089
- Status
- Active since October 12, 2009
- Main commodity
- Construction sand and gravel
- Mine type
- Surface
- County
- Ada County, Idaho
- Nearest town
- Boise
- Operator
- Knife River Corporation Mountain West
- Parent company
- Knife River Corporation
- Employees
- 7
- MSHA field office
- Boise ID Field Office
- Citations and orders since January 1, 2022
- 18
- Significant and substantial
- 3 (16.7%)
- Closure orders
- 0
- High negligence or reckless
- 1
- Proposed penalties
- $7,326
- Amount paid so far
- $7,326
- Inspections
- 12
- Inspector hours on site
- 65
- Citations per inspection
- 1.50 (all mines 2.30)
- Accident reports
- 3
- Injury and illness cases
- 3
- Fatalities
- 0
- Latest MSHA record
- July 30, 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 | 1 | $772 | 0 |
| 2024 | 8 | 0 | $1,176 | 1 |
| 2025 | 9 | 2 | $5,378 | 0 |
| 2026 | 0 | 0 | $0 | 2 |
Standards cited most at Crusher #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 56.12004 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12002 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.15003 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14103 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 1 |
| 30 CFR 50.20 | Reporting of accidents, injuries and illnesses | 1 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.11012 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12030 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.4203 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at Crusher #1
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 Crusher #1 describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Machinery | 1 |
| Slip or fall of person | 1 |
| Other | 1 |
Equipment named in accident reports at Crusher #1
| Equipment | Reports |
|---|---|
| Hand tools (powered) | 1 |
Other open mines in Ada County, Idaho
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Rock Force 1 | Premier LLC | Ada County, ID | Construction sand and gravel | 6 | 48 |
| Liberty | Premier LLC | Ada County, ID | Construction sand and gravel | 3 | 33 |
| CR4 | Lurre Construction | Ada County, ID | Construction sand and gravel | 3 | 23 |
| Igt Sand and Gravel | Idaho Grading and Trucking, L.L.C. | Ada County, ID | Construction sand and gravel | 8 | 18 |
| Plant #2 | H & B Crushing LLC | Ada County, ID | Construction sand and gravel | 4 | 17 |
| Plant #4 | H & B Crushing LLC | Ada County, ID | Construction sand and gravel | 4 | 14 |
| Plant #3 | H & B Crushing LLC | Ada County, ID | Construction sand and gravel | 3 | 13 |
| Plant #7 | H & B Crushing LLC | Ada County, ID | Construction sand and gravel | 5 | 11 |
| Golden Eagle | Greyhound Mine & Milling, Inc. | Ada County, ID | Gold ore | 6 | 10 |
| Notus Pit Boise River Road | Sunroc Corporation | Ada County, ID | Construction sand and gravel | 5 | 8 |
| Wash Plant 2 | Knife River Corporation Mountain West | Ada County, ID | Construction sand and gravel | 4 | 8 |
| Broken Rock Sand & Gravel | Broken Rock Sand & Gravel LLC | Ada County, ID | Crushed, broken stone | 6 | 7 |
| Mobile Impact Crusher | Sunroc Corporation | Ada County, ID | Construction sand and gravel | 4 | 7 |
| Table Rock Sandstone | Table Rock Sandstone, LLC | Ada County, ID | Dimension sandstone | 2 | 6 |
| Caldwell Plant | Carco Mineral Resources Inc | Ada County, ID | Common clays | 8 | 5 |
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.