Data / Mines / Arizona / Diamond 7
Diamond 7, Coconino County, Arizona: 3 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Diamond 7 is an intermittent dimension sandstone surface mine in Coconino County, Arizona, operated by Drake Stone Products Inc with 3 employees on MSHA's record (mine ID 0202726). Since January 1, 2022 MSHA inspectors issued 3 citations and orders there with $453 in proposed penalties, and 0 accident reports were filed there, with no injury or illness cases.
The request: Watch Diamond 7 (MSHA mine ID 0202726) in Coconino County, Arizona: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 0202726
- Status
- Intermittent since February 7, 2023
- Main commodity
- Dimension sandstone
- Mine type
- Surface
- County
- Coconino County, Arizona
- Nearest town
- Ash Fork
- Operator
- Drake Stone Products Inc
- Employees
- 3
- MSHA field office
- Mesa North AZ Field Office
- Citations and orders since January 1, 2022
- 3
- Significant and substantial
- 0 (0.0%)
- Closure orders
- 0
- High negligence or reckless
- 0
- Proposed penalties
- $453
- Amount paid so far
- $453
- Inspections
- 6
- Inspector hours on site
- 25
- Citations per inspection
- 0.50 (all mines 2.30)
- Accident reports
- 0
- Injury and illness cases
- 0
- Fatalities
- 0
- Latest MSHA record
- February 18, 2026
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 |
|---|---|---|---|---|
| 2025 | 2 | 0 | $302 | 0 |
| 2026 | 1 | 0 | $151 | 0 |
Standards cited most at Diamond 7
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 50.30 | Reporting of accidents, injuries and illnesses | 3 |
Other open mines in Coconino County, Arizona
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Nelson Quarry & Plant | Martin Marietta Materials, Inc. | Coconino County, AZ | Lime | 84 | 67 |
| Pinyon Plain Mine | Efr Arizona Strip LLC | Coconino County, AZ | Uranium ore | 32 | 42 |
| Miller Mine | Miller Mining, Inc. | Coconino County, AZ | Crushed, broken stone | 2 | 30 |
| Red Pit Mine | Red Pit Mine | Coconino County, AZ | Crushed, broken stone | 6 | 18 |
| More Sand | More Sand LLC | Coconino County, AZ | Construction sand and gravel | 2 | 15 |
| Wash Plant | Interstate Rock Products Inc | Coconino County, AZ | Crushed, broken stone | 2 | 13 |
| Cemex-Gray Mountain | Cemex Construction Materials South LLC | Coconino County, AZ | Construction sand and gravel | 15 | 9 |
| Crusher #1 | Restoration Group, Inc. | Coconino County, AZ | Construction sand and gravel | 7 | 8 |
| Partridge T23N R3W &27 | Harley Gray Stone Company | Coconino County, AZ | Dimension sandstone | 8 | 5 |
| Howard Mason Materials | Howard Mesa Materials L.L.C. | Coconino County, AZ | Crushed, broken stone | 2 | 5 |
| Portable Screen All | Coconino County Public Works Dept | Coconino County, AZ | Construction sand and gravel | 8 | 4 |
| Schuck Development Corp | Schuck Development Corp | Coconino County, AZ | Construction sand and gravel | 4 | 3 |
| Kaibab Pit | Kanab Coal and Rock Products | Coconino County, AZ | Construction sand and gravel | 1 | 3 |
| L.P.'s Cinder Pitt, LLC | L.P.'s Cinder Pitt, LLC | Coconino County, AZ | Crushed, broken stone | 2 | 2 |
| Fredonia Portable | Interstate Rock Products Inc | Coconino County, AZ | Construction sand and gravel | 2 | 2 |
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.