Agate mines in the US: 8 open mines and MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
MSHA lists 8 open agate mines in the US, run by 6 operators and employing 26 people. Since January 1, 2022 its inspectors issued 64 citations and orders there with $15,928 in proposed penalties, and operators reported 1 injury or illness case. The operators with the most open mines are Wyoming Earthmoving Corporation; Apex Materials LLC.; Ash Excavating. Data from MSHA, November 6, 2026.
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- Open mines
- 8
- Operators
- 6
- Employees
- 26
- Intermittent
- 4
- Temporarily Idled
- 3
- Active
- 1
- Mines run by individuals, counted and not listed
- 2
- Citations and orders since January 1, 2022
- 64
- Significant and substantial
- 16 (25.0%)
- Closure orders
- 4
- High negligence or reckless
- 6
- Proposed penalties
- $15,928
- Amount paid so far
- $13,166
- Inspections
- 22
- Inspector hours on site
- 121
- Citations per inspection
- 2.91 (all mines 2.30)
- Accident reports
- 1
- Injury and illness cases
- 1
- Fatalities
- 0
- Latest MSHA record
- July 30, 2026
Operators with the most open mines
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 |
|---|---|---|---|---|---|
| Wyoming Earthmoving Corporation | 2 | 12 | 0 | $0 | 0 |
| Apex Materials LLC. | 1 | 2 | 22 | $4,329 | 0 |
| Ash Excavating | 1 | 1 | 10 | $1,766 | 1 |
| Bhi | 1 | 7 | 8 | $1,571 | 0 |
| Independent Aggregates LLC | 1 | 3 | 4 | $604 | 0 |
Operators with the most citations
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Apex Materials LLC. | 1 | 2 | 22 | $4,329 | 0 |
| Ash Excavating | 1 | 1 | 10 | $1,766 | 1 |
| Bhi | 1 | 7 | 8 | $1,571 | 0 |
| Independent Aggregates LLC | 1 | 3 | 4 | $604 | 0 |
| Wyoming Earthmoving Corporation | 2 | 12 | 0 | $0 | 0 |
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 |
|---|---|---|---|---|---|
| Apex Portable 1 | Apex Materials LLC. | Clark County, NV | Agate | 2 | 22 |
| Ash Rock | Ash Excavating | Washington County, UT | Agate | 1 | 10 |
| Crusher 1 | Bhi | Juab County, UT | Agate | 7 | 8 |
| Independent #2 -Stamford Quarry | Independent Aggregates LLC | Jones County, TX | Agate | 3 | 4 |
| Metso Nordberg HP400 Cone Crusher | Wyoming Earthmoving Corporation | Weston County, WY | Agate | 6 | 0 |
| Superbase Screen | Wyoming Earthmoving Corporation | Weston County, WY | Agate | 6 | 0 |
States
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 | 12 | 5 | $2,411 | 0 |
| 2025 | 28 | 8 | $6,591 | 0 |
| 2026 | 24 | 3 | $6,926 | 1 |
Standards cited most at agate mines
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 56.14112 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.1000 | Surface metal and nonmetal mines | 3 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 2 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.18010 | Surface metal and nonmetal mines | 2 |
| 30 CFR 46.3 | Training at sand, gravel and surface stone mines | 2 |
| 30 CFR 41.11 | Notice of legal identity | 2 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.9301 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at agate mines
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| No lost time, or an occupational illness | 1 |
What the accident reports at agate mines describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Disorders (physical agents) | 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.