Data / Mines / Utah / San Juan County
Mines in San Juan County, Utah: 12 open mines
MSHA lists 12 open mines in San Juan County, Utah, run by 7 operators and employing 218 people. Since January 1, 2022 its inspectors issued 123 citations and orders there with $22,263 in proposed penalties, and operators reported 36 injury or illness cases. The operators with the most open mines are Holliday Construction Inc; Efr Colorado Plateau LLC; Crowley Construction, Inc. Data from MSHA, November 6, 2026.
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- Open mines
- 12
- Operators
- 7
- Employees
- 218
- Temporarily Idled
- 5
- Active
- 4
- Intermittent
- 3
- Citations and orders since January 1, 2022
- 123
- Significant and substantial
- 9 (7.3%)
- Closure orders
- 3
- High negligence or reckless
- 8
- Proposed penalties
- $22,263
- Amount paid so far
- $22,112
- Inspections
- 88
- Inspector hours on site
- 1,849
- Citations per inspection
- 1.40 (all mines 2.30)
- Accident reports
- 36
- Injury and illness cases
- 36
- Fatalities
- 0
- Latest MSHA record
- October 14, 2026
Operators with the most open mines in San Juan County, Utah
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 |
|---|---|---|---|---|---|
| Holliday Construction Inc | 3 | 13 | 14 | $2,044 | 0 |
| Efr Colorado Plateau LLC | 2 | 45 | 63 | $10,029 | 6 |
| Crowley Construction, Inc | 2 | 5 | 8 | $1,182 | 0 |
| Anfield Resources Holding Corp. | 2 | 5 | 0 | $0 | 0 |
| Efr White Mesa LLC | 1 | 89 | 29 | $4,487 | 13 |
| Mariana Copper One | 1 | 60 | 9 | $4,521 | 17 |
| Sonderegger Inc | 1 | 1 | 0 | $0 | 0 |
Operators with the most citations in San Juan County, Utah
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Efr Colorado Plateau LLC | 2 | 45 | 63 | $10,029 | 6 |
| Efr White Mesa LLC | 1 | 89 | 29 | $4,487 | 13 |
| Holliday Construction Inc | 3 | 13 | 14 | $2,044 | 0 |
| Mariana Copper One | 1 | 60 | 9 | $4,521 | 17 |
| Crowley Construction, Inc | 2 | 5 | 8 | $1,182 | 0 |
| Anfield Resources Holding Corp. | 2 | 5 | 0 | $0 | 0 |
| Sonderegger Inc | 1 | 1 | 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 |
|---|---|---|---|---|---|
| La Sal Complex | Efr Colorado Plateau LLC | San Juan County, UT | Uranium ore | 45 | 63 |
| White Mesa Mill | Efr White Mesa LLC | San Juan County, UT | Uranium ore | 89 | 29 |
| Lisbon Valley Mining Co | Mariana Copper One | San Juan County, UT | Copper ore | 60 | 9 |
| Holliday Crusher | Holliday Construction Inc | San Juan County, UT | Construction sand and gravel | 5 | 9 |
| Holliday Crusher #2 | Holliday Construction Inc | San Juan County, UT | Construction sand and gravel | 4 | 5 |
| Impact Crusher | Crowley Construction, Inc | San Juan County, UT | Construction sand and gravel | 2 | 5 |
| Portable Screen | Crowley Construction, Inc | San Juan County, UT | Construction sand and gravel | 3 | 3 |
| Wash Plant #1 | Holliday Construction Inc | San Juan County, UT | Construction sand and gravel | 4 | 0 |
| Velvet Mine | Anfield Resources Holding Corp. | San Juan County, UT | Uranium ore | 3 | 0 |
| Papoose | Anfield Resources Holding Corp. | San Juan County, UT | Crushed, broken limestone | 2 | 0 |
| Portable Plant 1 | Sonderegger Inc | San Juan County, UT | Construction sand and gravel | 1 | 0 |
| Energy Queen | Efr Colorado Plateau LLC | San Juan County, UT | Uranium ore | 0 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Construction sand and gravel | 6 | 50% |
| Uranium ore | 4 | 33.3% |
| Crushed, broken limestone | 1 | 8.3% |
| Copper ore | 1 | 8.3% |
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 | 7 | 0 | $1,042 | 4 |
| 2023 | 24 | 1 | $3,572 | 7 |
| 2024 | 21 | 2 | $6,366 | 10 |
| 2025 | 42 | 4 | $6,539 | 6 |
| 2026 | 29 | 2 | $4,744 | 9 |
Standards cited most at mines in San Juan County, Utah
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 56.12032 | Surface metal and nonmetal mines | 11 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 7 |
| 30 CFR 57.5039 | Underground metal and nonmetal mines | 5 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 5 |
| 30 CFR 57.11058 | Underground metal and nonmetal mines | 4 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 4 |
| 30 CFR 57.14100 | Underground metal and nonmetal mines | 4 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12030 | Surface metal and nonmetal mines | 4 |
| 30 CFR 57.4201 | Underground metal and nonmetal mines | 3 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 3 |
| 30 CFR 57.5060 | Underground metal and nonmetal mines | 3 |
| 30 CFR 47.41 | Hazard communication | 3 |
| 30 CFR 57.12030 | Underground metal and nonmetal mines | 2 |
| 30 CFR 56.17001 | Surface metal and nonmetal mines | 2 |
Injury and illness cases at mines in San Juan County, Utah
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 24 |
| No lost time, or an occupational illness | 12 |
What the accident reports at mines in San Juan County, Utah describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Machinery | 9 |
| Handtools (nonpowered) | 8 |
| Handling of materials | 7 |
| Slip or fall of person | 6 |
| Stepping or kneeling on object | 2 |
| Fall of roof or back | 1 |
| Falling/sliding/rolling materials | 1 |
| Ignition or explosion of gas or dust | 1 |
| Electrical | 1 |
Equipment named in accident reports at mines in San Juan County, Utah
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 9 |
| Hand tools (powered) | 3 |
| Air compressor | 1 |
| Mucking machine | 1 |
| Rock drill | 1 |
| Bench grinder | 1 |
| Front-end loader | 1 |
| Carriage-mounted drills | 1 |
| Machine | 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.