Data / Mines / Arizona Materials
Arizona Materials: 33 open mines, 513 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Arizona Materials (MSHA operator ID L01838) operates 33 open mines with 152 employees in Utah, Colorado, Arizona and other states, mostly construction sand and gravel. Since January 1, 2022 MSHA inspectors issued it 513 citations and orders with $284,476 in proposed penalties, and it reported 31 injury or illness cases. Data from MSHA, November 6, 2026.
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- MSHA operator ID
- L01838
- Open mines
- 33
- Employees at open mines
- 152
- States
- Utah, Colorado, Arizona, Idaho, Wyoming
- Parent company
- Summit Materials LLC
- Citations and orders since January 1, 2022
- 513
- Significant and substantial
- 101 (19.7%)
- Closure orders
- 9
- High negligence or reckless
- 33
- Proposed penalties
- $284,476
- Amount paid so far
- $253,796
- Inspections
- 320
- Inspector hours on site
- 1,981
- Citations per inspection
- 1.60 (all mines 2.30)
- Accident reports
- 32
- Injury and illness cases
- 31
- Fatalities
- 0
- Latest MSHA record
- October 29, 2026
Open mines of Arizona Materials
Ranked by citations since January 1, 2022.
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Bluffdale Pit | Arizona Materials | Utah County, UT | Construction sand and gravel | 3 | 52 |
| Parley's Stone | Arizona Materials | Salt Lake County, UT | Construction sand and gravel | 8 | 47 |
| Highland Pit | Arizona Materials | Utah County, UT | Construction sand and gravel | 10 | 39 |
| Maryland Creek | Arizona Materials | Summit County, CO | Construction sand and gravel | 10 | 30 |
| Mona Pit | Arizona Materials | Juab County, UT | Construction sand and gravel | 5 | 28 |
| Pit #1 43RD Ave | Arizona Materials | Maricopa County, AZ | Construction sand and gravel | 14 | 26 |
| Hyrum Pit | Arizona Materials | Cache County, UT | Construction sand and gravel | 7 | 24 |
| Benjamin | Arizona Materials | Utah County, UT | Construction sand and gravel | 6 | 24 |
| Little Mountain | Arizona Materials | Box Elder County, UT | Construction sand and gravel | 2 | 23 |
| Grantsville Pit | Arizona Materials | Tooele County, UT | Construction sand and gravel | 2 | 23 |
| Stockton Pit | Arizona Materials | Tooele County, UT | Construction sand and gravel | 4 | 22 |
| Plant 1 Avondale | Arizona Materials | Maricopa County, AZ | Construction sand and gravel | 10 | 21 |
| West Valley | Arizona Materials | Salt Lake County, UT | Construction sand and gravel | 2 | 20 |
| Brigham Pit | Arizona Materials | Box Elder County, UT | Construction sand and gravel | 4 | 19 |
| Portable Crusher Unit F | Arizona Materials | Sweetwater County, WY | Construction sand and gravel | 9 | 18 |
| Walker Sand & Gravel | Arizona Materials | Blaine County, ID | Construction sand and gravel | 9 | 14 |
| Crusher 1 | Arizona Materials | Mesa County, CO | Construction sand and gravel | 5 | 8 |
| Grey Goose | Arizona Materials | Grand County, CO | Construction sand and gravel | 5 | 6 |
| Crusher 3 | Arizona Materials | Emery County, UT | Construction sand and gravel | 4 | 6 |
| Crusher 2 | Arizona Materials | Delta County, CO | Construction sand and gravel | 5 | 5 |
| Herriman Pit | Arizona Materials | Salt Lake County, UT | Construction sand and gravel | 2 | 5 |
| HP 300 (Crusher 4) | Arizona Materials | Delta County, CO | Construction sand and gravel | 3 | 4 |
| Erda Pit | Arizona Materials | Salt Lake County, UT | Construction sand and gravel | 2 | 4 |
| Buckeye Plant | Arizona Materials | Maricopa County, AZ | Construction sand and gravel | 0 | 4 |
| Washplant 1 | Arizona Materials | Mesa County, CO | Construction sand and gravel | 3 | 3 |
| Washplant 4 | Arizona Materials | La Plata County, CO | Construction sand and gravel | 2 | 3 |
| Washplant 3 | Arizona Materials | Mesa County, CO | Construction sand and gravel | 3 | 2 |
| Wellsville Pit | Arizona Materials | Cache County, UT | Construction sand and gravel | 2 | 2 |
| Gentry Pit | Arizona Materials | Minidoka County, ID | Construction sand and gravel | 2 | 1 |
| Washplant 5 | Arizona Materials | Grand County, UT | Construction sand and gravel | 1 | 1 |
| Crusher #6 | Arizona Materials | Mesa County, CO | Construction sand and gravel | 4 | 0 |
| Crusher 5 | Arizona Materials | La Plata County, CO | Construction sand and gravel | 4 | 0 |
| Track Plant 1 | Arizona Materials | Routt County, CO | Construction sand and gravel | 0 | 0 |
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 | 120 | 17 | $36,975 | 4 |
| 2023 | 116 | 32 | $104,249 | 6 |
| 2024 | 72 | 13 | $44,896 | 8 |
| 2025 | 140 | 30 | $74,863 | 4 |
| 2026 | 65 | 9 | $23,493 | 9 |
Standards cited most at Arizona Materials
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 56.14107 | Surface metal and nonmetal mines | 66 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 55 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 35 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 31 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 26 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 24 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 23 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 15 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 13 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 10 |
| 30 CFR 47.41 | Hazard communication | 10 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 9 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 9 |
| 30 CFR 56.1000 | Surface metal and nonmetal mines | 9 |
| 30 CFR 56.11002 | Surface metal and nonmetal mines | 8 |
Injury and illness cases at Arizona Materials
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 13 |
| No lost time, or an occupational illness | 18 |
What the accident reports at Arizona Materials describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 8 |
| Slip or fall of person | 8 |
| Handtools (nonpowered) | 6 |
| Machinery | 5 |
| Powered haulage | 3 |
| Inundation | 1 |
| Other | 1 |
Equipment named in accident reports at Arizona Materials
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 6 |
| Hand tools (powered) | 4 |
| Crusher | 2 |
| Trucks | 1 |
| Conveyor | 1 |
| Front-end loader | 1 |
Commodities
| Main commodity | Open mines |
|---|---|
| Construction sand and gravel | 33 |
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.