Key Takeaway
Copperstone Mine is a nonproducing underground mine producing Metal, located in Quartzite, La Paz County, AZ. It has 171 violations on record (48 S&S) and $40K in proposed penalties. Operated by Bonanza Explorations, Inc..
Copperstone Mine
Operator: Bonanza Explorations, Inc.
Controller: Minera Alamos Inc.
Location: Quartzite, La Paz County, AZ
Employees: 4
Recent Violations
View all 171 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 12/03/2025 | 57.15001 | Non-S&S | ModNegligence | $151 |
| 12/03/2025 | 57.15001 | Non-S&S | ModNegligence | $151 |
| 12/03/2025 | 50.10(d) | Non-S&S | ModNegligence | $151 |
| 12/03/2025 | 57.3200 | Non-S&S | ModNegligence | $151 |
| 12/03/2025 | 56.4201(a)(2) | Non-S&S | ModNegligence | $151 |
| 06/04/2025 | 57.12018 | Non-S&S | ModNegligence | $151 |
| 11/19/2024 | 57.14115(b) | Non-S&S | ModNegligence | $147 |
| 07/26/2023 | 57.12004 | Non-S&S | ModNegligence | $143 |
| 07/26/2023 | 57.12040 | S&S | ModNegligence | $346 |
| 12/09/2021 | 50.30(a) | Non-S&S | ModNegligence | $133 |
| 08/26/2021 | 57.3203 | Non-S&S | ModNegligence | $220 |
| 08/26/2021 | 57.4361 | Non-S&S | ModNegligence | $302 |
| 08/25/2021 | 57.12023 | Non-S&S | HighNegligence | $674 |
| 08/25/2021 | 57.4201(a)(5) | Non-S&S | ModNegligence | $125 |
| 08/25/2021 | 57.14100(b) | S&S | ModNegligence | $302 |
| 08/25/2021 | 57.14100(c) | S&S | ModNegligence | $1,006 |
| 02/18/2021 | 45.4(b) | Non-S&S | ModNegligence | $125 |
| 02/18/2021 | 50.30(a) | Non-S&S | ModNegligence | $125 |
| 02/18/2021 | 57.11053 | Non-S&S | ModNegligence | $136 |
| 02/18/2021 | 57.15030 | Non-S&S | ModNegligence | $302 |
Accidents & Injuries
View all 25 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 03/19/2019 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 76d restricted |
| 10/09/2013 | OTHER | DAYS RESTRICTED ACTIVITY ONLY | 3d restricted |
| 09/27/2013 | FALL OF ROOF OR BACK | ACCIDENT ONLY | None |
| 09/21/2013 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 2d lost |
| 09/19/2013 | FALL OF ROOF OR BACK | ACCIDENT ONLY | None |
| 07/30/2013 | STEPPING OR KNEELING ON OBJECT | DAYS RESTRICTED ACTIVITY ONLY | 3d restricted |
| 07/21/2013 | MACHINERY | DAYS AWAY FROM WORK ONLY | 10d lost |
| 07/08/2013 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 10d lost |
| 06/20/2013 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 2d lost |
| 06/10/2013 | FALL OF FACE/RIB/PILLAR/SIDE/HIGHWALL | DYS AWY FRM WRK & RESTRCTD ACT | 15d lost, 48d restricted |
Inspections
View all 99 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 01/06/2026 | 01/07/2026 | 8.00 | 1 |
| 12/09/2025 | 12/09/2025 | 10.00 | 1 |
| 12/02/2025 | 12/03/2025 | 12.00 | 1 |
| 09/10/2025 | 09/10/2025 | 9.25 | 1 |
| 06/04/2025 | 06/05/2025 | 13.00 | 1 |
| 03/18/2025 | 03/21/2025 | 21.00 | 1 |
| 11/18/2024 | 11/25/2024 | 16.50 | 1 |
| 08/21/2024 | 08/21/2024 | 7.25 | 1 |
| 06/24/2024 | 06/25/2024 | 11.75 | 1 |
| 03/12/2024 | 03/13/2024 | 10.00 | 1 |
Mine Details
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Frequently Asked Questions
How many MSHA violations does Copperstone Mine have?
Copperstone Mine has 171 MSHA violations on record, of which 48 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $40K.
What type of mine is Copperstone Mine?
Copperstone Mine is a Underground mine producing Metal, located in Quartzite, La Paz County, AZ. It currently has 4 employees.
Has anyone been injured or killed at Copperstone Mine?
According to MSHA records, Copperstone Mine has 25 reported accident/injury records and 0 fatalities on file.
Who operates Copperstone Mine?
Copperstone Mine is operated by Bonanza Explorations, Inc. and controlled by Minera Alamos Inc.. MSHA Mine ID: 0203000.