| Deposit ID | 10162936 |
|---|---|
| MAS/MILS ID | 0060010031 |
| Record type | Site |
| Current site name | Ivaldi Bros Quarry |
| Point of reference | Ore Body |
|---|---|
| Geographic coordinates: | -121.86073, 37.55821 (WGS84) |
| Elevation | 88 |
| Location accuracy | 1000(meters) |
Political divisions (FIPS codes)
Alameda(county)
California(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
La Costa Valley(quadrangle 1:24,000 scale)
Stockton(quadrangle 1:100,000 scale)
San Jose(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
San Francisco Bay(hydrologic unit)
San Francisco Bay(hydrologic accounting unit)
San Francisco Bay(hydrologic subregion)
California(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | California | Alameda |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 004 S | 001 E | 27 | SE | California |
| Commodity | Importance |
|---|---|
| Sand and Gravel, Construction | Primary |
| Ore Body (1) | -121.86073, 37.55821 |
|---|
| Operation type | Surface |
|---|---|
| Development status | Producer |
| Commodity type | Non-metallic |
| Significant | No |
| Type of mineral rights | Unknown |
|---|
| Ownership category | Unknown |
|---|
| Type | Operator |
|---|---|
| Owner | East Bay Excavating Co, Inc |
| ID | 404421 |
| Home office | California |
| Year | 1980 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0060010031 | |
| Mine Safety and Health Administration | MSHA | MSHA | 0404421 |
MSHA RPT DATED NOV 1980.
| 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 | Abandoned since 03/02/1989 |
|---|---|
| MSHA mine ID | 0404421 |
| Mine name (MSHA) | Ivaldi Bros Quarry |
| Current operator | East Bay Excavating Company Inc |
| Current controller (parent) | Ronald Ivaldi |
| 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MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date.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.