Changing a rear idler on the dozer, idler was stuck in place so employee tried striking it with a sledgehammer. Piece of metal flew off and embedded into the right side of employees chest. Foreign body removed and wound was sutured.
Black Rock Arizona Metal/Non-Metal
Suncore Construction and Materials Inc.
· Surface
Controlled by
CCI (Clyde Companies Inc)
St. George, UT,
Mohave County,
AZ
·
Active
MSHA Mine ID: 0203369
Black Rock Arizona has $4K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 0
- Total incidents
- 3
- Years on record
- 2018–2023
- Latest incident
- May 2023
Compliance record
MSHA citations since 2019
26
citations
2
significant & substantial
$4,322
proposed penalties
$4,322
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2017
18
inspections on record
237
inspection hours
n/a
citations per 100 inspection hours
ⓘ
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.Rate withheld: 237 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Black Rock Arizona has $4K in proposed MSHA penalties and $0 outstanding across 0 contested dockets.
Penalty disposition
ⓘ
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.$4K
proposed penalties
$4K
current assessed
$4K
paid to date
$0
outstanding
26 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-12-18.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
See also
the operator's enforcement record
Quarterly safety rates
ⓘ
Citations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.Citations per million employee-hours, as reported to MSHA
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2025 Q4 | 8,038 | 4 | 0 | 497.6 |
| 2025 Q3 | 10,013 | 0 | 0 | 0.0 |
| 2025 Q2 | 9,875 | 5 | 2 | 506.3 |
| 2025 Q1 | 10,311 | 1 | 0 | 97.0 |
| 2024 Q4 | 7,673 | 0 | 0 | 0.0 |
| 2024 Q3 | 8,824 | 1 | 0 | 113.3 |
| 2024 Q2 | 6,667 | 0 | 0 | 0.0 |
| 2024 Q1 | 6,781 | 3 | 0 | 442.4 |
Show 26 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 7,344 | 0 | 0 | 0.0 |
| 2023 Q3 | 7,493 | 0 | 0 | 0.0 |
| 2023 Q2 | 6,522 | 0 | 0 | 0.0 |
| 2023 Q1 | 7,227 | 0 | 0 | 0.0 |
| 2022 Q4 | 4,833 | 0 | 0 | 0.0 |
| 2022 Q3 | 4,558 | 0 | 0 | 0.0 |
| 2022 Q2 | 4,981 | 3 | 0 | 602.3 |
| 2022 Q1 | 3,800 | 0 | 0 | 0.0 |
| 2021 Q4 | 0 | 1 | 0 | |
| 2021 Q3 | 1,515 | 0 | 0 | 0.0 |
| 2021 Q2 | 1,688 | 3 | 0 | 1777.3 |
| 2021 Q1 | 1,523 | 0 | 0 | 0.0 |
| 2020 Q4 | 2,100 | 2 | 0 | 952.4 |
| 2020 Q3 | 2,273 | 0 | 0 | 0.0 |
| 2020 Q2 | 2,403 | 2 | 0 | 832.3 |
| 2020 Q1 | 2,154 | 0 | 0 | 0.0 |
| 2019 Q4 | 2,788 | 1 | 0 | 358.7 |
| 2019 Q3 | 1,860 | 0 | 0 | 0.0 |
| 2019 Q2 | 1,799 | 0 | 0 | 0.0 |
| 2019 Q1 | 1,085 | 0 | 0 | 0.0 |
| 2018 Q4 | 1,154 | 0 | 0 | 0.0 |
| 2018 Q3 | 1,216 | 0 | 0 | 0.0 |
| 2018 Q2 | 1,101 | 0 | 0 | 0.0 |
| 2018 Q1 | 631 | 0 | 0 | 0.0 |
| 2017 Q4 | 1,131 | 0 | 0 | 0.0 |
| 2017 Q3 | 325 | 0 | 0 | 0.0 |
No fatalities recorded at this mine.
Reportable incidents
3 on file2023 · 1 incident
May 11, 2023
AZ · Metal/Non-Metal
maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech
HANDTOOLS (NONPOWERED)
Suncore Construction and Materials Inc. · Struck by flying object
2019 · 1 incident
May 15, 2019
AZ · Metal/Non-Metal
crusher attendant/operator, pan feeder operator/worker
HANDLING OF MATERIALS
Bryce Christensen Excavating · Struck by... (Not Elsewhere Classified)
Repairing cone crusher, tramp cinder piston, drop out right hand.
2018 · 1 incident
November 6, 2018
AZ · Metal/Non-Metal
crusher attendant/operator, pan feeder operator/worker
MACHINERY
Bryce Christensen Excavating · Struck by... (Not Elsewhere Classified)
Employee was tightening bolt it spun and lacerated finger.
For insurers, brokers, and safety consultants
The full compliance file on Black Rock Arizona
A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.