Data / Mines / Wyoming / Granite Canyon Quarry
Granite Canyon Quarry: 34 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Granite Canyon Quarry is an active crushed, broken granite surface mine in Laramie County, Wyoming, operated by Martin Marietta Materials, Inc. with 42 employees on MSHA's record (mine ID 4800018). Since January 1, 2022 MSHA inspectors issued 34 citations and orders there with $11,698 in proposed penalties, and 4 accident reports were filed there, with 4 injury or illness cases.
The request: Watch Granite Canyon Quarry (MSHA mine ID 4800018) in Laramie County, Wyoming: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 4800018
- Status
- Active since June 26, 1989
- Main commodity
- Crushed, broken granite
- Mine type
- Surface
- County
- Laramie County, Wyoming
- Nearest town
- Granite Canyon
- Operator
- Martin Marietta Materials, Inc.
- Parent company
- Martin Marietta Materials Inc
- Employees
- 42
- MSHA field office
- Denver CO Field Office
- Citations and orders since January 1, 2022
- 34
- Significant and substantial
- 5 (14.7%)
- Closure orders
- 0
- High negligence or reckless
- 1
- Proposed penalties
- $11,698
- Amount paid so far
- $6,596
- Inspections
- 16
- Inspector hours on site
- 294
- Citations per inspection
- 2.12 (all mines 2.30)
- Accident reports
- 4
- Injury and illness cases
- 4
- Fatalities
- 0
- Latest MSHA record
- October 13, 2026
- Citations issued to contractors here
- 5 ($3,040 proposed)
Citations and injury cases by year
Calendar years since 2022; 2026 runs to the date of the MSHA files.
| Year | Citations and orders | Significant and substantial | Proposed penalties | Injury and illness cases |
|---|---|---|---|---|
| 2022 | 8 | 2 | $1,931 | 4 |
| 2023 | 5 | 0 | $739 | 0 |
| 2024 | 7 | 0 | $1,121 | 0 |
| 2025 | 7 | 2 | $2,805 | 0 |
| 2026 | 7 | 1 | $5,102 | 0 |
Standards cited most at Granite Canyon Quarry
Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.
| Standard | What the part covers | Citations |
|---|---|---|
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.11002 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.11016 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14205 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 2 |
| 30 CFR 47.41 | Hazard communication | 2 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.16001 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.4601 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14207 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12013 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14201 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at Granite Canyon Quarry
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 1 |
| No lost time, or an occupational illness | 3 |
What the accident reports at Granite Canyon Quarry describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Machinery | 1 |
| Handling of materials | 1 |
| Other | 1 |
| Slip or fall of person | 1 |
Equipment named in accident reports at Granite Canyon Quarry
| Equipment | Reports |
|---|---|
| Hand tools (powered) | 1 |
Other open mines in Laramie County, Wyoming
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Star Pit #1 | JTL Group, Inc. | Laramie County, WY | Construction sand and gravel | 9 | 50 |
| Crusher #1 | Simon Contractors | Laramie County, WY | Crushed, broken stone | 7 | 30 |
| West Wash Plant #10 | Croell, Inc. | Laramie County, WY | Construction sand and gravel | 5 | 24 |
| Lone Tree Creek Quarry | Asphalt Specialties Co Inc | Laramie County, WY | Construction sand and gravel | 8 | 17 |
| West Wash Plant #11 | Croell, Inc. | Laramie County, WY | Construction sand and gravel | 4 | 17 |
| Merrill Pit 1 | Rocky Mountain Sand & Gravel, LLC | Laramie County, WY | Construction sand and gravel | 3 | 5 |
| C&H Portable | C & H Excavation LLC | Laramie County, WY | Construction sand and gravel | 5 | 3 |
| Laramie County (portable) | Laramie County Public Works | Laramie County, WY | Construction sand and gravel | 3 | 2 |
| West Dirt Crew #1 | Croell, Inc. | Laramie County, WY | Construction sand and gravel | 3 | 0 |
| Horse Creek Mine | L G Everist Inc | Laramie County, WY | Construction sand and gravel | 1 | 0 |
US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.