Granite Canyon Quarry
MSHA mine ID 4800018 · Laramie County, WY
- Operator
- Martin Marietta Materials
- Controller
- Martin Marietta Materials Inc
- Mine status
- Active since Jun 26, 1989
- Mine type
- Surface
- Primary commodity
- Crushed, Broken Granite
- Citations issued
- Aug 12, 2025 to Oct 7, 2026
Past 24 months at a glance
- Inspections
- 7
- Citations and orders
- 18
- Marked S&S by MSHA
- 3
- Assessed penalties
- $9,791
17 of 18 citations have an MSHA assessment so far, first proposed at $9,791. 0 are marked contested.
Citations by standard
The 30 CFR section MSHA cited, most cited first.
| Standard | Citations | Assessed |
|---|---|---|
| 56.14100(b) | 3 | $678 |
| 56.14205 | 2 | $4,292 |
| 56.14207 | 2 | $377 |
| 56.12004 | 1 | $151 |
| 56.12018 | 1 | $245 |
| 56.12023 | 1 | $1,219 |
| 56.14107(a) | 1 | $151 |
| 56.14112(a)(1) | 1 | $0 |
| 56.14130(i) | 1 | $1,431 |
| 56.14132(a) | 1 | $151 |
| 56.14201(b) | 1 | $549 |
| 56.16005 | 1 | $245 |
| 56.4101 | 1 | $151 |
| 56.4500 | 1 | $151 |
Latest citations
| Issued | Assessed |
|---|---|
| Oct 7, 2026 No. 5214709 56.14112(a)(1) | Not yet assessed |
| Jul 13, 2026 No. 5213324 56.14205 | $4,047 Received |
| Apr 29, 2026 No. 5211301 56.14100(b) | $226 Received |
| Apr 29, 2026 No. 5057040 56.14100(b) | $226 Received |
| Apr 29, 2026 No. 5057039 56.14100(b) | $226 Received |
| Apr 28, 2026 No. 5057038 56.14207 | $226 Received |
| Apr 20, 2026 No. 5057037 56.12004 | $151 Received |
| Oct 29, 2025 No. 5056939 56.16005 | $245 Closed |
| Oct 23, 2025 No. 5056938 56.14205 | $245 Closed |
| Oct 21, 2025 No. 5056937 56.14130(i) | $1,431 Closed |
| Aug 19, 2025 No. 5056824 56.12018 | $245 Closed |
| Aug 19, 2025 No. 5056823 56.14201(b) | $549 Closed |
| Aug 19, 2025 No. 5056822 56.14107(a) | $151 Closed |
| Aug 13, 2025 No. 8587200 56.4500 | $151 Closed |
| Aug 13, 2025 No. 8587199 56.12023 | $1,219 Closed |
| Aug 12, 2025 No. 8587198 56.14132(a) | $151 Closed |
| Aug 12, 2025 No. 8587197 56.4101 | $151 Received |
| Aug 12, 2025 No. 8587196 56.14207 | $151 Received |
Latest inspections
Regular Safety and Health Inspection
Event F04A64A
Oct 6, 2026 to Oct 13, 2026
Spot Inspection
Event F01DC92
Jul 13, 2026 to Jul 16, 2026
Compliance Follow-up Inspection
Event 6853887
May 19, 2026
Regular Safety and Health Inspection
Event F02BB51
Apr 20, 2026 to May 1, 2026
Regular Safety and Health Inspection
Event F02BB3A
Oct 21, 2025 to Oct 29, 2025
Regular Safety and Health Inspection
Event 6853886
Aug 12, 2025 to Aug 19, 2025
Verbal Hazard Complaint Inspections
Event F01CAB4
Jul 29, 2025
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About this record
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