| Deposit ID | 10140045 |
|---|---|
| MAS/MILS ID | 0060550064 |
| Record type | Site |
| Current site name | Napa Quarry |
| Point of reference | Ore Body |
|---|---|
| Geographic coordinates: | -122.29935, 38.26019 (WGS84) |
| Elevation | 6 |
| Location accuracy | 5000(meters) |
Political divisions (FIPS codes)
Napa(county)
California(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Napa(quadrangle 1:24,000 scale)
Napa(quadrangle 1:100,000 scale)
Santa Rosa(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
San Pablo Bay(hydrologic unit)
San Francisco Bay(hydrologic accounting unit)
San Francisco Bay(hydrologic subregion)
California(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | California | Napa |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 005 N | 004 W | 21 | S2 | California |
| Commodity | Importance |
|---|---|
| Stone, Crushed/Broken | Primary |
| Ore Body (1) | -122.29935, 38.26019 |
|---|
| Operation type | Surface |
|---|---|
| Development status | Producer |
| Commodity type | Non-metallic |
| Significant | No |
| Type of mineral rights | Unknown |
|---|
| Ownership category | Unknown |
|---|
| Type | Operator |
|---|---|
| Owner | Basalt Rock Co., Inc. |
| ID | 400023 |
| Home office | California |
| Year | 1979 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0060550064 | |
| Mine Safety and Health Administration | MSHA | MSHA | 0400023 |
MSHA REPORT DATED NOVEMBER 1979
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 04-NOV-1983 | Western Field Operations Center (WFOC) | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
| Status | Active since 03/06/2024 |
|---|---|
| MSHA mine ID | 0400023 |
| Mine name (MSHA) | Napa Quarry |
| Current operator | CalMat Co |
| Current controller (parent) | Vulcan Materials Company |
| Mine type | Surface (Metal / non-metal) |
MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.
Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.