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

NonProducing Underground Metal

Operator: Bonanza Explorations, Inc.

Controller: Minera Alamos Inc.

Location: Quartzite, La Paz County, AZ

Employees: 4

171
Violations
48
S&S Violations
25
Accidents
$40K
Penalties

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

MSHA Mine ID0203000
Mine TypeUnderground
StatusNonProducing
CommodityMetal
SIC DescriptionGold Ore
Employees4
Days/Week7.0
Hours/Shift0.0
Coordinates33.8755560, -114.2847220
Nearest TownQuartzite

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.