Data / Mines / Idaho / Caldwell Plant
Caldwell Plant, Ada County, Idaho: 5 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Caldwell Plant is an active common clays surface mine in Ada County, Idaho, operated by Carco Mineral Resources Inc with 8 employees on MSHA's record (mine ID 1001768). Since January 1, 2022 MSHA inspectors issued 5 citations and orders there with $739 in proposed penalties, and 0 accident reports were filed there, with no injury or illness cases.
The request: Watch Caldwell Plant (MSHA mine ID 1001768) 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
- 1001768
- Status
- Active since January 2, 1987
- Main commodity
- Common clays
- Mine type
- Surface
- County
- Ada County, Idaho
- Nearest town
- Caldwell
- Operator
- Carco Mineral Resources Inc
- Employees
- 8
- MSHA field office
- Boise ID Field Office
- Citations and orders since January 1, 2022
- 5
- Significant and substantial
- 1 (20.0%)
- Closure orders
- 0
- High negligence or reckless
- 0
- Proposed penalties
- $739
- Amount paid so far
- $739
- Inspections
- 10
- Inspector hours on site
- 44
- Citations per inspection
- 0.50 (all mines 2.30)
- Accident reports
- 0
- Injury and illness cases
- 0
- Fatalities
- 0
- Latest MSHA record
- April 1, 2026
- Citations issued to contractors here
- 3 ($453 proposed)
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 |
|---|---|---|---|---|
| 2024 | 4 | 1 | $588 | 0 |
| 2025 | 1 | 0 | $151 | 0 |
Standards cited most at Caldwell Plant
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 56.12028 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 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 |
| Crusher #1 | Knife River Corporation Mountain West | Ada County, ID | Construction sand and gravel | 7 | 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 |
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.