Coolidge Plant
MSHA mine ID 0203471 · Pinal County, AZ
- Operator
- Premier Materials Coolidge LLC
- Controller
- Sand River Holdings LLC; AMS Southwest LLC
- Mine status
- Active since Mar 12, 2026
- Mine type
- Surface
- Primary commodity
- Construction Sand and Gravel
- Citations issued
- Jan 31, 2025 to Sep 30, 2026
Past 24 months at a glance
- Inspections
- 7
- Citations and orders
- 13
- Marked S&S by MSHA
- 0
- Assessed penalties
- $1,678
11 of 13 citations have an MSHA assessment so far, first proposed at $1,678. 0 are marked contested.
Citations by standard
The 30 CFR section MSHA cited, most cited first.
| Standard | Citations | Assessed |
|---|---|---|
| 50.10(d) | 2 | $302 |
| 50.12 | 2 | $302 |
| 46.8(a)(1) | 1 | $168 |
| 46.9(b)(5) | 1 | $151 |
| 56.12008 | 1 | $151 |
| 56.12018 | 1 | $151 |
| 56.12028 | 1 | $151 |
| 56.13011 | 1 | $151 |
| 56.14206(b) | 1 | $0 |
| 56.23003(b) | 1 | $151 |
| Not listed | 1 | $0 |
Latest citations
| Issued | Assessed |
|---|---|
| Sep 30, 2026 No. 5058813 56.14206(b) | Not yet assessed |
| Mar 23, 2026 No. 5220427 56.23003(b) | $151 Closed |
| Mar 23, 2026 No. 5220426 46.9(b)(5) | $151 Closed |
| Mar 23, 2026 No. 5220425 56.12028 | $151 Closed |
| Mar 23, 2026 No. 5220424 56.13011 | $151 Closed |
| Mar 23, 2026 No. 5220423 56.12008 | $151 Closed |
| Mar 23, 2026 No. 5220422 56.12018 | $151 Closed |
| Apr 23, 2025 No. 9829462 46.8(a)(1) | $168 Closed |
| Jan 31, 2025 No. 9903690 50.12 | $151 Closed |
| Jan 31, 2025 No. 9903689 50.10(d) | $151 Closed |
| Jan 31, 2025 No. 9903688 50.12 | $151 Closed |
| Jan 31, 2025 No. 9903687 50.10(d) | $151 Closed |
| Jan 31, 2025 No. 9903686 Standard not listed | Not yet assessed |
Latest inspections
Regular Safety and Health Inspection
Event F046E46
Sep 29, 2026 to Sep 30, 2026
Regular Safety and Health Inspection
Event F03D1B2
Sep 29, 2026 to Sep 30, 2026
Regular Safety and Health Inspection
Event F031052
Mar 22, 2026 to Mar 23, 2026
Verbal Hazard Complaint Inspections
Event 6858838
May 21, 2025 to May 22, 2025
Verbal Hazard Complaint Inspections
Event F01639D
Apr 23, 2025
Non-Fatal Accident Investigation
Event 6858837
Jan 30, 2025 to Apr 8, 2025
Regular Safety and Health Inspection
Event 6858590
Nov 5, 2024 to Nov 6, 2024
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About this record
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