Data / Mines / Arizona / Hermosa Mine
Hermosa Mine, Santa Cruz County, Arizona: 34 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Hermosa Mine is a nonproducing lead-zinc ore underground mine in Santa Cruz County, Arizona, operated by South32 Hermosa Inc. with 0 employees on MSHA's record (mine ID 0203398). Since January 1, 2022 MSHA inspectors issued 34 citations and orders there with $7,482 in proposed penalties, and 40 accident reports were filed there, with 33 injury or illness cases.
The request: Watch Hermosa Mine (MSHA mine ID 0203398) in Santa Cruz County, Arizona: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 0203398
- Status
- NonProducing since January 27, 2021
- Main commodity
- Lead-zinc ore
- Mine type
- Underground
- County
- Santa Cruz County, Arizona
- Nearest town
- Patagonia
- Operator
- South32 Hermosa Inc.
- Parent company
- South32
- Employees
- 0
- MSHA field office
- Mesa South AZ Field Office
- Citations and orders since January 1, 2022
- 34
- Significant and substantial
- 4 (11.8%)
- Closure orders
- 0
- High negligence or reckless
- 4
- Proposed penalties
- $7,482
- Amount paid so far
- $7,482
- Inspections
- 41
- Inspector hours on site
- 1,028
- Citations per inspection
- 0.83 (all mines 2.30)
- Accident reports
- 40
- Injury and illness cases
- 33
- Fatalities
- 0
- Latest MSHA record
- October 18, 2026
- Citations issued to contractors here
- 84 ($66,178 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 |
|---|---|---|---|---|
| 2022 | 0 | 0 | $0 | 6 |
| 2023 | 0 | 0 | $0 | 6 |
| 2024 | 15 | 2 | $2,366 | 4 |
| 2025 | 4 | 1 | $1,336 | 8 |
| 2026 | 15 | 1 | $3,780 | 9 |
Standards cited most at Hermosa Mine
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 57.20003 | Underground metal and nonmetal mines | 4 |
| 30 CFR 47.41 | Hazard communication | 2 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.4203 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12030 | Surface metal and nonmetal mines | 2 |
| 30 CFR 57.4201 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.9300 | Underground metal and nonmetal mines | 1 |
| 30 CFR 57.15006 | Underground metal and nonmetal mines | 1 |
| 30 CFR 57.4104 | Underground metal and nonmetal mines | 1 |
| 30 CFR 57.14115 | Underground metal and nonmetal mines | 1 |
| 30 CFR 57.4130 | Underground metal and nonmetal mines | 1 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 1 |
| 30 CFR 57.11050 | Underground metal and nonmetal mines | 1 |
| 30 CFR 48.29 | Training of miners | 1 |
| 30 CFR 57.23002 | Underground metal and nonmetal mines | 1 |
Injury and illness cases at Hermosa Mine
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 21 |
| No lost time, or an occupational illness | 12 |
What the accident reports at Hermosa Mine describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 14 |
| Slip or fall of person | 8 |
| Hoisting | 6 |
| Machinery | 5 |
| Handtools (nonpowered) | 2 |
| Other | 2 |
| Exploding vessels under pressure | 1 |
| Stepping or kneeling on object | 1 |
| Nonpowered haulage | 1 |
Equipment named in accident reports at Hermosa Mine
| Equipment | Reports |
|---|---|
| Elevator | 6 |
| Hand tools (powered) | 3 |
| Carriage-mounted drills | 2 |
| Trucks | 2 |
| Hand tools (not powered) | 2 |
| Bulldozer | 2 |
| Tugger | 1 |
| Machine | 1 |
Other open mines in Santa Cruz County, Arizona
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Padilla Crush and Screening Plant | Southern Arizona Sand and Gravel LLC. | Santa Cruz County, AZ | Construction sand and gravel | 0 | 50 |
| Josephine Canyon Pit | Southern Arizona Sand and Gravel LLC. | Santa Cruz County, AZ | Construction sand and gravel | 0 | 22 |
| Agua Fria Pit | CalPortland Company | Santa Cruz County, AZ | Construction sand and gravel | 4 | 4 |
| Agua Fria #2 | B & D Land and Cattle LLP | Santa Cruz County, AZ | Construction sand and gravel | 2 | 0 |
| Fisher Industries Plant 36 | Fisher Sand & Gravel Company | Santa Cruz County, AZ | Construction sand and gravel | 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.