Data / Mines / California / China Hill (Volcano) Quarry
China Hill (Volcano) Quarry: 6 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
China Hill (Volcano) Quarry is a temporarily idled crushed, broken stone surface mine in Amador County, California, operated by Folsom Ready-Mix, Inc. with 3 employees on MSHA's record (mine ID 0403227). Since January 1, 2022 MSHA inspectors issued 6 citations and orders there with $798 in proposed penalties, and 0 accident reports were filed there, with no injury or illness cases.
The request: Watch China Hill (Volcano) Quarry (MSHA mine ID 0403227) in Amador County, California: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 0403227
- Status
- Temporarily Idled since January 27, 2025
- Main commodity
- Crushed, broken stone
- Mine type
- Surface
- County
- Amador County, California
- Nearest town
- China Hill
- Operator
- Folsom Ready-Mix, Inc.
- Employees
- 3
- MSHA field office
- Vacaville CA Field Office
- Citations and orders since January 1, 2022
- 6
- Significant and substantial
- 0 (0.0%)
- Closure orders
- 0
- High negligence or reckless
- 0
- Proposed penalties
- $798
- Amount paid so far
- $798
- Inspections
- 3
- Inspector hours on site
- 22
- Citations per inspection
- 2.00 (all mines 2.30)
- Accident reports
- 0
- Injury and illness cases
- 0
- Fatalities
- 0
- Latest MSHA record
- August 22, 2024
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 | 6 | 0 | $798 | 0 |
Standards cited most at China Hill (Volcano) 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 | 2 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 1 |
Other open mines in Amador County, California
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Usmc Ione Plant | US Mine Corp | Amador County, CA | Construction sand and gravel | 50 | 262 |
| Specialty Granules (Ione) LLC | Isp Granule Products Inc. | Amador County, CA | Construction sand and gravel | 74 | 49 |
| Lincoln Mine Project | Seduli Sutter Operations Corporation | Amador County, CA | Gold ore | 3 | 18 |
| Plymouth Sand & Gravel | Plymouth Sand & Gravel | Amador County, CA | Construction sand and gravel | 6 | 14 |
| Jackson Valley Quarry | George Reed Inc | Amador County, CA | Crushed, broken stone | 15 | 13 |
| Portable #1 Big Plant | Custom Crushing Industries, Inc | Amador County, CA | Construction sand and gravel | 3 | 10 |
| TRP Amador Quarry | Triangle Rock Products | Amador County, CA | Sand, common | 3 | 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.