Key Takeaway
Thunder Material Source is a active surface mine producing SandAndGravel, located in Show Low, Navajo County, AZ. It has 39 violations on record (12 S&S) and $9K in proposed penalties. Operated by WW Clyde & Co..
Thunder Material Source
Operator: WW Clyde & Co.
Controller: CCI (Clyde Companies Inc)
Location: Show Low, Navajo County, AZ
Employees: 4
Recent Violations
View all 39 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 06/26/2025 | 56.18002(a) | S&S | HighNegligence | $959 |
| 06/26/2025 | 56.15006 | Non-S&S | HighNegligence | $151 |
| 06/26/2025 | 56.11008 | Non-S&S | ModNegligence | $151 |
| 06/26/2025 | 56.11002 | Non-S&S | HighNegligence | $151 |
| 06/26/2025 | 56.12030 | Non-S&S | HighNegligence | $151 |
| 06/26/2025 | 56.20003(a) | S&S | HighNegligence | $642 |
| 06/26/2025 | 56.14107(a) | Non-S&S | HighNegligence | $193 |
| 06/25/2025 | 56.4100(b) | Non-S&S | HighNegligence | $151 |
| 06/25/2025 | 56.11002 | Non-S&S | HighNegligence | $193 |
| 06/25/2025 | 56.12004 | S&S | HighNegligence | $959 |
| 04/15/2025 | 56.14100(c) | Non-S&S | ModNegligence | $151 |
| 07/22/2024 | 50.30(a) | Non-S&S | ModNegligence | $147 |
| 07/22/2024 | 47.41(a) | Non-S&S | ModNegligence | $147 |
| 07/22/2024 | 56.14205 | S&S | ModNegligence | $421 |
| 07/22/2024 | 56.12032 | S&S | LowNegligence | $189 |
| 03/29/2023 | 50.30(a) | Non-S&S | HighNegligence | $143 |
| 03/29/2023 | 56.14132(a) | Non-S&S | ModNegligence | $143 |
| 03/29/2023 | 56.14107(a) | S&S | ModNegligence | $167 |
| 03/29/2023 | 56.12008 | Non-S&S | ModNegligence | $143 |
| 03/29/2023 | 56.14130(g) | S&S | LowNegligence | $167 |
Inspections
View all 20 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 02/12/2026 | 02/13/2026 | 14.00 | 1 |
| 07/28/2025 | 07/30/2025 | 7.50 | 1 |
| 07/10/2025 | 07/11/2025 | 3.50 | 1 |
| 06/24/2025 | 07/02/2025 | 30.50 | 1 |
| 04/15/2025 | 04/15/2025 | 10.50 | 1 |
| 12/11/2024 | 12/11/2024 | 5.25 | 1 |
| 07/22/2024 | 07/22/2024 | 5.75 | 1 |
| 03/29/2023 | 03/30/2023 | 12.50 | 1 |
| 03/22/2022 | 03/25/2022 | 26.25 | 1 |
| 08/31/2021 | 09/07/2021 | 14.50 | 1 |
Mine Details
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Frequently Asked Questions
How many MSHA violations does Thunder Material Source have?
Thunder Material Source has 39 MSHA violations on record, of which 12 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $9K.
What type of mine is Thunder Material Source?
Thunder Material Source is a Surface mine producing SandAndGravel, located in Show Low, Navajo County, AZ. It currently has 4 employees.
Has anyone been injured or killed at Thunder Material Source?
According to MSHA records, Thunder Material Source has 0 reported accident/injury records and 0 fatalities on file.
Who operates Thunder Material Source?
Thunder Material Source is operated by WW Clyde & Co. and controlled by CCI (Clyde Companies Inc). MSHA Mine ID: 0203378.