Mines in Santa Cruz County, California
Santa Cruz County, California has 12 mines on MSHA's register: 3 active, 9 abandoned. 1 miner has died and 544 accidents have been reported at these mines between 1983 and 2025. Inspectors have issued 761 citations.
Every mine MSHA has registered in Santa Cruz County, working or not, with the accident, fatality and citation record each one carries on this site. Active mines are listed first, then the rest by the weight of their record.
Abandoned and historical mine features in Santa Cruz County →
- Mines on register
- 12
- Active
- 3
- Fatalities on record
- 1
- Citations issued
- 761
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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.Mines plot only where MSHA holds a surveyed coordinate for the site; mines the agency locates to a town, county or state centroid are in the counts and the list above but not drawn. Click a point for the mine's status and record.
| Operator | Mines | Active | Fatalities |
|---|---|---|---|
| Rmc Pacific Materials | 3 | 0 | 0 |
| Granite Construction Company | 2 | 1 | 1 |
| Granite Rock Company | 2 | 1 | 0 |
| Cabrillo Sand & Gravel | 1 | 0 | 0 |
| Hanson Aggregates West, Inc. | 1 | 0 | 0 |
| Lone Star Industries Inc | 1 | 0 | 0 |
| Olive Springs Quarry Inc | 1 | 1 | 0 |
| Santa Cruz Aggregates | 1 | 0 | 0 |
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Felton QuarryActive 1 fatal 92 citationsSurface metal/non-metal · Granite Construction Co · MSHA ID 0400107
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Quail Hollow OperationActive 0 fatal 126 citationsSurface metal/non-metal · Granite Rock Company · MSHA ID 0403177
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Olive Springs Quarry IncActive 0 fatal 78 citationsSurface metal/non-metal · Olive Springs Quarry Inc · MSHA ID 0402263
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Davenport Cement PlantAbandoned 0 fatal 313 citationsFacility metal/non-metal · Cemex · MSHA ID 0404056
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Bonny Doon QuarryAbandoned 0 fatal 62 citationsSurface metal/non-metal · Cemex · MSHA ID 0400175
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FeltonAbandoned 0 fatal 31 citationsSurface metal/non-metal · Hanson Aggregates West, Inc. · MSHA ID 0401828
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Olympia Plant #125Abandoned 0 fatal 11 citationsSurface metal/non-metal · Rmc Pacific Materials · MSHA ID 0401890
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Santa Cruz Sand PlantAbandoned 0 fatal 48 citationsSurface metal/non-metal · Granite Rock Company · MSHA ID 0401782
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Bonny Doon Shale Pit And MillAbandoned 0 fatal 0 citationsSurface metal/non-metal · Lone Star Industries Inc · MSHA ID 0401188
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Cabrillo Sand & GravelAbandoned 0 fatal 0 citationsSurface metal/non-metal · Cabrillo Sand & Gravel · MSHA ID 0401714
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O'Connel PitAbandoned 0 fatal 0 citationsSurface metal/non-metal · Granite Construction Company · MSHA ID 0404765
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Yard #3Abandoned 0 fatal 0 citationsFacility metal/non-metal · Santa Cruz Aggregates · MSHA ID 0403851
Status, type and operator are as reported to MSHA. Fatality and accident counts are MSHA's reportable accident records for the mine; citations are inspector-issued violations on record. Each mine's own page carries the full detail.
The register is MSHA's Mine Data Retrieval System: every operation ever assigned a mine ID, including ones abandoned decades ago, so the count is a history of mining in the county, not a count of working mines. A mine's county is the one its operator reported to MSHA. Fatality and accident counts start with MSHA's reportable-accident records (1983 onward); citation counts are inspector-issued violations on record. We are an independent research tool, not MSHA.