Data / Mines / California / A R Wilson Quarry
A R Wilson Quarry: 54 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
A R Wilson Quarry is an active crushed, broken granite surface mine in San Benito County, California, operated by Granite Rock Co with 115 employees on MSHA's record (mine ID 0400119). Since January 1, 2022 MSHA inspectors issued 54 citations and orders there with $14,513 in proposed penalties, and 21 accident reports were filed there, with 20 injury or illness cases.
The request: Watch A R Wilson Quarry (MSHA mine ID 0400119) in San Benito County, California: each new citation and each accident report. $10 of work on sign-up, no card.
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.
- MSHA mine ID
- 0400119
- Status
- Active since March 30, 1989
- Main commodity
- Crushed, broken granite
- Mine type
- Surface
- County
- San Benito County, California
- Nearest town
- Aromas
- Operator
- Granite Rock Co
- Employees
- 115
- MSHA field office
- Vacaville CA Field Office
- Citations and orders since January 1, 2022
- 54
- Significant and substantial
- 5 (9.3%)
- Closure orders
- 2
- High negligence or reckless
- 0
- Proposed penalties
- $14,513
- Amount paid so far
- $11,577
- Inspections
- 37
- Inspector hours on site
- 395
- Citations per inspection
- 1.46 (all mines 2.30)
- Accident reports
- 21
- Injury and illness cases
- 20
- Fatalities
- 0
- Latest MSHA record
- October 7, 2026
- Citations issued to contractors here
- 18 ($17,038 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 | 20 | 1 | $3,456 | 3 |
| 2023 | 0 | 0 | $0 | 5 |
| 2024 | 15 | 0 | $2,205 | 3 |
| 2025 | 11 | 2 | $6,841 | 4 |
| 2026 | 8 | 2 | $2,011 | 5 |
Standards cited most at A R Wilson 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 56.14107 | Surface metal and nonmetal mines | 9 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14207 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.11027 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12023 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14110 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 1 |
| 30 CFR 46.7 | Training at sand, gravel and surface stone mines | 1 |
Injury and illness cases at A R Wilson Quarry
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 14 |
| No lost time, or an occupational illness | 6 |
What the accident reports at A R Wilson Quarry describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 6 |
| Slip or fall of person | 6 |
| Powered haulage | 3 |
| Handtools (nonpowered) | 2 |
| Fire | 1 |
| Other | 1 |
| Striking or bumping | 1 |
| Machinery | 1 |
Equipment named in accident reports at A R Wilson Quarry
| Equipment | Reports |
|---|---|
| Scraper loader | 2 |
| Hand tools (not powered) | 2 |
| Trucks | 1 |
| Mancar | 1 |
| Hand tools (powered) | 1 |
Other open mines in San Benito County, California
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Renewable Resources | Renewable Resources | San Benito County, CA | Construction sand and gravel | 5 | 28 |
| Vineyard Rock | Vineyard Rock Products | San Benito County, CA | Crushed, broken stone | 2 | 22 |
| Cal Rock Products LLC | Cal Rock Products LLC | San Benito County, CA | Crushed, broken limestone | 7 | 20 |
| Southside Sand And Gravel | Granite Rock Co | San Benito County, CA | Construction sand and gravel | 6 | 4 |
| Plant 25 | Don Chapin Company Inc | San Benito County, CA | Construction sand and gravel | 6 | 3 |
| Portable Plant #2 | California Rock Crusher Corp | San Benito County, CA | Sand, industrial | 4 | 3 |
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.