Data / Mines / Utah / Lisbon Valley Mining Co
Lisbon Valley Mining Co: 9 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Lisbon Valley Mining Co is an active copper ore surface mine in San Juan County, Utah, operated by Mariana Copper One with 60 employees on MSHA's record (mine ID 4202406). Since January 1, 2022 MSHA inspectors issued 9 citations and orders there with $4,521 in proposed penalties, and 17 accident reports were filed there, with 17 injury or illness cases.
The request: Watch Lisbon Valley Mining Co (MSHA mine ID 4202406) in San Juan County, Utah: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 4202406
- Status
- Active since January 20, 2021
- Main commodity
- Copper ore
- Mine type
- Surface
- County
- San Juan County, Utah
- Nearest town
- La Sal
- Operator
- Mariana Copper One
- Parent company
- Mariana Copper LLC
- Employees
- 60
- MSHA field office
- Farmington NM Field Office
- Citations and orders since January 1, 2022
- 9
- Significant and substantial
- 1 (11.1%)
- Closure orders
- 0
- High negligence or reckless
- 2
- Proposed penalties
- $4,521
- Amount paid so far
- $4,521
- Inspections
- 19
- Inspector hours on site
- 300
- Citations per inspection
- 0.47 (all mines 2.30)
- Accident reports
- 17
- Injury and illness cases
- 17
- Fatalities
- 0
- Latest MSHA record
- July 2, 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 |
|---|---|---|---|---|
| 2022 | 1 | 0 | $143 | 3 |
| 2023 | 5 | 0 | $723 | 4 |
| 2024 | 3 | 1 | $3,655 | 6 |
| 2025 | 0 | 0 | $0 | 1 |
| 2026 | 0 | 0 | $0 | 3 |
Standards cited most at Lisbon Valley Mining Co
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 56.14100 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.4200 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.9201 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12030 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at Lisbon Valley Mining Co
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 16 |
| No lost time, or an occupational illness | 1 |
What the accident reports at Lisbon Valley Mining Co describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handtools (nonpowered) | 4 |
| Slip or fall of person | 4 |
| Machinery | 3 |
| Handling of materials | 2 |
| Falling/sliding/rolling materials | 1 |
| Ignition or explosion of gas or dust | 1 |
| Electrical | 1 |
| Stepping or kneeling on object | 1 |
Equipment named in accident reports at Lisbon Valley Mining Co
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 5 |
| Front-end loader | 1 |
| Carriage-mounted drills | 1 |
| Machine | 1 |
Other open mines in San Juan County, Utah
| 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 |
| 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 |
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.