Data / Mines / Arizona / Pinal County
Mines in Pinal County, Arizona: 46 open mines
MSHA lists 46 open mines in Pinal County, Arizona, run by 32 operators and employing 559 people. Since January 1, 2022 its inspectors issued 616 citations and orders there with $255,239 in proposed penalties, and operators reported 32 injury or illness cases. The operators with the most open mines are Rock Pros USA; Gila River Sand & Gravel Corporation; Arcosa Aggregates West, LLC.. Data from MSHA, November 6, 2026.
SpecStream is the live web data engine for teams and agents. It reads the mine, citation, inspection and accident files that MSHA publishes, and this page is that reading. Ask for the mines of a commodity, state or operator with the operator's headquarters, website and size added from the web, and new mines, new citations and new accident reports arrive in your sheet, CRM, Slack or agent as MSHA posts them.
- Open mines
- 46
- Operators
- 32
- Employees
- 559
- Active
- 22
- Intermittent
- 11
- Temporarily Idled
- 7
- New Mine
- 5
- NonProducing
- 1
- Mines run by individuals, counted and not listed
- 4
- Citations and orders since January 1, 2022
- 616
- Significant and substantial
- 140 (22.7%)
- Closure orders
- 22
- High negligence or reckless
- 37
- Proposed penalties
- $255,239
- Amount paid so far
- $214,071
- Inspections
- 399
- Inspector hours on site
- 2,616
- Citations per inspection
- 1.54 (all mines 2.30)
- Accident reports
- 32
- Injury and illness cases
- 32
- Fatalities
- 0
- Latest MSHA record
- November 3, 2026
Operators with the most open mines in Pinal County, Arizona
Ranked by open mines, then by citations. Sole proprietors and individuals are not listed.
Operators with the most citations in Pinal County, Arizona
Citations and orders issued since January 1, 2022 at their open mines here.
Mines with the most citations
Open mines, ranked by citations and orders since January 1, 2022.
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Crusher #1 | Rock Pros USA | Pinal County, AZ | Crushed, broken stone | 5 | 76 |
| Resolution Mine | Resolution Copper Mining LLC | Pinal County, AZ | Copper ore | 180 | 49 |
| Superior | Rock Pros USA | Pinal County, AZ | Crushed, broken granite | 14 | 39 |
| Fisher Industries Plant 3 | Fisher Sand & Gravel Company | Pinal County, AZ | Construction sand and gravel | 3 | 34 |
| Broccoli | Rock Pros USA | Pinal County, AZ | Construction sand and gravel | 2 | 32 |
| Reymert Mine | Gila Rock Products, LLC | Pinal County, AZ | Construction sand and gravel | 10 | 30 |
| Mine #8 | Superstition Crushing L.L.C. | Pinal County, AZ | Construction sand and gravel | 3 | 30 |
| Maricopa Pit | Gila River Sand & Gravel Corporation | Pinal County, AZ | Construction sand and gravel | 60 | 29 |
| P & P Materials LLC | P & P Materials LLC | Pinal County, AZ | Construction sand and gravel | 8 | 28 |
| Desert Queen | Desert Queen Quarry LLC | Pinal County, AZ | Lime | 4 | 28 |
| 1013 Coolidge | Arcosa Aggregates West, LLC. | Pinal County, AZ | Construction sand and gravel | 0 | 24 |
| Maxus3 | Maxus Construction Materials LLC | Pinal County, AZ | Construction sand and gravel | 4 | 19 |
| Santan Pit | Gila River Sand & Gravel Corporation | Pinal County, AZ | Construction sand and gravel | 83 | 17 |
| Omya Arizona | Omya Inc | Pinal County, AZ | Crushed, broken marble | 28 | 17 |
| Queen Creek Pit | M.R. Tanner Mining, Inc. | Pinal County, AZ | Construction sand and gravel | 4 | 16 |
| Diablo Plant # 136 | CalPortland Company | Pinal County, AZ | Construction sand and gravel | 8 | 15 |
| Plant # 1 | Gila Rock Products, LLC | Pinal County, AZ | Construction sand and gravel | 4 | 14 |
| Treasure Chest Granite Pit LLC | Treasure Chest Granite Pit LLC | Pinal County, AZ | Crushed, broken granite | 10 | 12 |
| Coolidge Plant | Premier Materials Coolidge LLC | Pinal County, AZ | Construction sand and gravel | 9 | 12 |
| 1012 Queen Creek #3 | Arcosa Aggregates West, LLC. | Pinal County, AZ | Construction sand and gravel | 0 | 12 |
| Cyprus Tohono Corporation | Cyprus Tohono Corp | Pinal County, AZ | Copper ore | 16 | 9 |
| Queen Creek Stone | CalMat Co | Pinal County, AZ | Construction sand and gravel | 10 | 9 |
| Mine #6 | Superstition Crushing L.L.C. | Pinal County, AZ | Construction sand and gravel | 4 | 9 |
| Feldman #2 | Gold Bond Building Products, LLC. | Pinal County, AZ | Gypsum | 16 | 7 |
| Cemex-Casa Grande | Cemex Construction Materials South LLC | Pinal County, AZ | Construction sand and gravel | 10 | 7 |
| 1024 San Tan Valley | Arcosa Aggregates West, LLC. | Pinal County, AZ | Sand, common | 8 | 6 |
| Ringo Canyon Granite LLC | Ringo Canyon Granite, LLC | Pinal County, AZ | Construction sand and gravel | 3 | 6 |
| Coolidge Plant 65 | Martin Marietta Arizona, LLC | Pinal County, AZ | Construction sand and gravel | 14 | 5 |
| Superior Pit & Mill | Imerys Perlite USA, Inc | Pinal County, AZ | Perlite | 7 | 5 |
| Tee Pee Sand & Gravel | Tee Pee Sand & Gravel | Pinal County, AZ | Construction sand and gravel | 3 | 5 |
| Maricopa Plant | Vulcan Asphalt LLC | Pinal County, AZ | Construction sand and gravel | 2 | 4 |
| Cemex-Coolidge | Cemex Construction Materials South LLC | Pinal County, AZ | Construction sand and gravel | 9 | 3 |
| SMS | Superior Materials Inc | Pinal County, AZ | Construction sand and gravel | 0 | 2 |
| Portable Crusher No. 2 | Rango Inc. | Pinal County, AZ | Copper ore | 0 | 2 |
| Blackwater Pit | Gila River Sand & Gravel Corporation | Pinal County, AZ | Construction sand and gravel | 7 | 1 |
| Coolidge Pit | Sunroc Corporation | Pinal County, AZ | Sand, common | 4 | 1 |
| Maxus5, MR Tanner Rankin Pit Florence | Maxus Construction Materials LLC | Pinal County, AZ | Construction sand and gravel | 4 | 1 |
| San Tan Plant | Vulcan Asphalt LLC | Pinal County, AZ | Construction sand and gravel | 3 | 1 |
| White Cross Mine | Calportland Company | Pinal County, AZ | Gypsum | 0 | 0 |
| Sundt #1 | Sundt Construction Inc. | Pinal County, AZ | Crushed, broken stone | 0 | 0 |
| King Tut Mine | Silver Bullet Holdings Inc | Pinal County, AZ | Not stated | 0 | 0 |
| Santa Cruz Copper Project | Mesa Cobre Holding Corp | Pinal County, AZ | Not stated | 0 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Construction sand and gravel | 26 | 56.5% |
| Copper ore | 3 | 6.5% |
| Gypsum | 2 | 4.3% |
| Crushed, broken granite | 2 | 4.3% |
| Crushed, broken stone | 2 | 4.3% |
| Sand, common | 2 | 4.3% |
| Perlite | 1 | 2.2% |
| Crushed, broken marble | 1 | 2.2% |
| Dimension stone | 1 | 2.2% |
| Lime | 1 | 2.2% |
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 | 81 | 23 | $17,895 | 2 |
| 2023 | 200 | 42 | $40,937 | 7 |
| 2024 | 97 | 24 | $77,649 | 3 |
| 2025 | 142 | 37 | $99,032 | 10 |
| 2026 | 96 | 14 | $19,726 | 10 |
Standards cited most at mines in Pinal County, Arizona
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 | 42 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 40 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 38 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 37 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 35 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 30 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 27 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 21 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 21 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 20 |
| 30 CFR 47.41 | Hazard communication | 16 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 14 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 14 |
| 30 CFR 56.11003 | Surface metal and nonmetal mines | 12 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 11 |
Injury and illness cases at mines in Pinal County, Arizona
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 21 |
| No lost time, or an occupational illness | 11 |
What the accident reports at mines in Pinal County, Arizona describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Slip or fall of person | 11 |
| Handling of materials | 10 |
| Handtools (nonpowered) | 5 |
| Machinery | 2 |
| Electrical | 1 |
| Striking or bumping | 1 |
| Powered haulage | 1 |
| Stepping or kneeling on object | 1 |
Equipment named in accident reports at mines in Pinal County, Arizona
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 5 |
| Ore haulage trucks - off highway trucks | 2 |
| Front-end loader | 2 |
| Hand tools (powered) | 1 |
| Welding machine | 1 |
| Conveyor | 1 |
| Forklift | 1 |
| Bulldozer | 1 |
Updated November 6, 2026. Read from US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets. 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.