Calaveras Rock Incorporated Metal/Non-Metal
Calaveras Rock Inc
· Surface
Controlled by
Gretsinger Warren
Santa Clara County,
CA
·
Abandoned
MSHA Mine ID: 0402280
MSHA record for Calaveras Rock Incorporated (mine ID 0402280). Fatalities, non-fatal incidents grouped by year, current operator and controller, and mine context.
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- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
Ownership history
- Granite Construction Company 1979 to 1986
- Granite Rock Company 1981 to 1982
- Calaveras Rock Inc 1986 to present
Source: MSHA controller and operator history, updated weekly.
Calaveras Rock Incorporated sits in Santa Clara County, California, where the Census mining category is 0.0% of county employment.
Local economic context
ⓘ
County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.Santa Clara County, California · Population 1,903,297
0.0%
Mining share of county employment
$159,674
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
No reportable incidents on file.
MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.