Thunder Material Source Metal/Non-Metal
WW Clyde & Co.
· Surface
Controlled by
CCI (Clyde Companies Inc)
Show Low,
Navajo County,
AZ
·
Active
MSHA Mine ID: 0203378
Thunder Material Source has $10K in proposed MSHA penalties and $151 outstanding across 0 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
Compliance record
MSHA citations since 2017
40
citations
12
significant & substantial
$9,523
proposed penalties
$9,372
paid to date
98% of proposed penalties paid to date, a $151 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2017
21
inspections on record
253
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: 253 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Thunder Material Source has $10K in proposed MSHA penalties and $151 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.$10K
proposed penalties
$10K
current assessed
$9K
paid to date
$151
outstanding
39 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-04-21.
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 | 2,305 | 0 | 0 | 0.0 |
| 2025 Q3 | 5,337 | 0 | 0 | 0.0 |
| 2025 Q2 | 6,381 | 11 | 3 | 1723.9 |
| 2025 Q1 | 8,672 | 0 | 0 | 0.0 |
| 2024 Q4 | 6,769 | 0 | 0 | 0.0 |
| 2024 Q3 | 4,564 | 4 | 2 | 876.4 |
| 2024 Q2 | 5,121 | 0 | 0 | 0.0 |
| 2024 Q1 | 4,440 | 0 | 0 | 0.0 |
Show 27 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 5,633 | 0 | 0 | 0.0 |
| 2023 Q3 | 6,451 | 0 | 0 | 0.0 |
| 2023 Q2 | 2,943 | 0 | 0 | 0.0 |
| 2023 Q1 | 3,108 | 5 | 2 | 1608.8 |
| 2022 Q4 | 1,423 | 0 | 0 | 0.0 |
| 2022 Q3 | 2,581 | 0 | 0 | 0.0 |
| 2022 Q2 | 3,868 | 0 | 0 | 0.0 |
| 2022 Q1 | 2,323 | 2 | 0 | 861.0 |
| 2021 Q4 | 1,697 | 0 | 0 | 0.0 |
| 2021 Q3 | 4,764 | 5 | 1 | 1049.5 |
| 2021 Q2 | 2,143 | 0 | 0 | 0.0 |
| 2021 Q1 | 2,648 | 0 | 0 | 0.0 |
| 2020 Q4 | 3,014 | 2 | 1 | 663.6 |
| 2020 Q3 | 4,398 | 0 | 0 | 0.0 |
| 2020 Q2 | 3,748 | 5 | 2 | 1334.0 |
| 2020 Q1 | 2,238 | 0 | 0 | 0.0 |
| 2019 Q4 | 4,001 | 1 | 0 | 249.9 |
| 2019 Q3 | 3,175 | 0 | 0 | 0.0 |
| 2019 Q2 | 4,162 | 0 | 0 | 0.0 |
| 2019 Q1 | 4,280 | 0 | 0 | 0.0 |
| 2018 Q4 | 4,030 | 1 | 0 | 248.1 |
| 2018 Q3 | 8,851 | 0 | 0 | 0.0 |
| 2018 Q2 | 5,673 | 0 | 0 | 0.0 |
| 2018 Q1 | 3,309 | 0 | 0 | 0.0 |
| 2017 Q4 | 0 | 0 | 0 | |
| 2017 Q3 | 4,587 | 0 | 0 | 0.0 |
| 2017 Q2 | 49 | 3 | 1 | 61224.5 |
No reportable incidents on file.
MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.
For insurers, brokers, and safety consultants
The full compliance file on Thunder Material Source
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.