Key Takeaway
Hermosa Mine is a nonproducing underground mine producing Metal, located in Patagonia, Santa Cruz County, AZ. It has 168 violations on record (25 S&S) and $104K in proposed penalties. Operated by South32 Hermosa Inc..
Hermosa Mine
Operator: South32 Hermosa Inc.
Controller: South32
Location: Patagonia, Santa Cruz County, AZ
Recent Violations
View all 168 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 01/26/2026 | 57.11001 | S&S | HighNegligence | $0 |
| 01/24/2026 | 57.17001 | Non-S&S | LowNegligence | $549 |
| 01/24/2026 | 57.12028 | Non-S&S | ModNegligence | $151 |
| 11/05/2025 | 57.20011 | Non-S&S | ModNegligence | $151 |
| 11/05/2025 | 57.6202(a)(7) | Non-S&S | ModNegligence | $267 |
| 11/04/2025 | 57.14100(b) | Non-S&S | LowNegligence | $151 |
| 11/04/2025 | 57.4201(a)(2) | Non-S&S | ModNegligence | $151 |
| 11/04/2025 | 57.20011 | Non-S&S | ModNegligence | $1,679 |
| 11/04/2025 | 57.11051(b) | Non-S&S | ModNegligence | $151 |
| 09/11/2025 | 57.22315 | Non-S&S | ModNegligence | $151 |
| 09/10/2025 | 57.4361(b)(1) | Non-S&S | HighNegligence | $3,736 |
| 09/09/2025 | 50.30(a) | Non-S&S | HighNegligence | $151 |
| 09/09/2025 | 57.4201(a)(2) | Non-S&S | ModNegligence | $151 |
| 09/04/2025 | 57.4201(a)(2) | Non-S&S | ModNegligence | $151 |
| 09/04/2025 | 57.20003(a) | Non-S&S | ModNegligence | $151 |
| 09/04/2025 | 57.14207 | Non-S&S | ModNegligence | $151 |
| 09/04/2025 | 57.14207 | Non-S&S | ModNegligence | $151 |
| 09/04/2025 | 57.14207 | Non-S&S | ModNegligence | $151 |
| 09/02/2025 | 56.4101 | Non-S&S | ModNegligence | $151 |
| 08/28/2025 | 49.8(b)(2) | Non-S&S | HighNegligence | $755 |
Accidents & Injuries
View all 35 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 12/27/2025 | HANDLING OF MATERIALS | PERM TOT OR PERM PRTL DISABLTY | None |
| 10/28/2025 | HOISTING | ACCIDENT ONLY | None |
| 07/28/2025 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 35d restricted |
| 06/07/2025 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | None |
| 05/29/2025 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 7d restricted |
| 02/18/2025 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 32d restricted |
| 01/30/2025 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 6d restricted |
| 01/25/2025 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 10d restricted |
| 01/19/2025 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 11/20/2024 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
Inspections
View all 54 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 01/23/2026 | 02/09/2026 | 228.50 | 4 |
| 11/03/2025 | 12/11/2025 | 152.00 | 3 |
| 08/25/2025 | 09/15/2025 | 201.50 | 3 |
| 08/20/2025 | 08/20/2025 | 16.00 | 1 |
| 08/13/2025 | 09/02/2025 | 40.75 | 1 |
| 06/09/2025 | 10/30/2025 | 16.75 | 1 |
| 06/02/2025 | 06/23/2025 | 168.25 | 3 |
| 03/05/2025 | 03/05/2025 | 8.75 | 1 |
| 02/18/2025 | 03/10/2025 | 121.25 | 3 |
| 01/02/2025 | 01/02/2025 | 7.50 | 1 |
Mine Details
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Frequently Asked Questions
How many MSHA violations does Hermosa Mine have?
Hermosa Mine has 168 MSHA violations on record, of which 25 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $104K.
What type of mine is Hermosa Mine?
Hermosa Mine is a Underground mine producing Metal, located in Patagonia, Santa Cruz County, AZ. It currently has 0 employees.
Has anyone been injured or killed at Hermosa Mine?
According to MSHA records, Hermosa Mine has 35 reported accident/injury records and 0 fatalities on file.
Who operates Hermosa Mine?
Hermosa Mine is operated by South32 Hermosa Inc. and controlled by South32. MSHA Mine ID: 0203398.