DENM
MSHA mine ID 0505193 · Weld County, CO
- Operator
- Monarch Mountain Minerals & Aggregates
- Controller
- Quikrete Holdings Inc.
- Mine status
- Active since Apr 16, 2026
- Mine type
- Surface
- Primary commodity
- Construction Sand and Gravel
- Citations issued
- Nov 26, 2024 to Sep 25, 2026
Past 24 months at a glance
- Inspections
- 3
- Citations and orders
- 5
- Marked S&S by MSHA
- 1
- Assessed penalties
- $1,697
2 of 5 citations have an MSHA assessment so far, first proposed at $1,697. 0 are marked contested.
Citations by standard
The 30 CFR section MSHA cited, most cited first.
| Standard | Citations | Assessed |
|---|---|---|
| 56.11001 | 1 | $1,550 |
| 56.11012 | 1 | $0 |
| 56.12004 | 1 | $0 |
| 56.12018 | 1 | $0 |
| 56.20003(a) | 1 | $147 |
Latest citations
| Issued | Assessed |
|---|---|
| Sep 25, 2026 No. 5213482 56.12004 | Not yet assessed |
| Sep 25, 2026 No. 5213481 56.11012 | Not yet assessed |
| Sep 25, 2026 No. 5213480 56.12018 | Not yet assessed |
| Oct 7, 2025 No. 6459193 56.11001 | $1,550 Closed |
| Nov 26, 2024 No. 9829609 56.20003(a) | $147 Closed |
Latest inspections
Regular Safety and Health Inspection
Event 6943681
Sep 25, 2026
Regular Safety and Health Inspection
Event 6782995
Oct 7, 2025 to Oct 8, 2025
Regular Safety and Health Inspection
Event F006C4A
Nov 26, 2024 to Dec 3, 2024
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About this record
These figures come from public Mine Safety and Health Administration (MSHA) open government data on mines, inspections, violations and assessed violations. MineCitation copies them as published and does not add findings of its own.
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