Mines in Lake County, California
Lake County, California has 30 mines on MSHA's register: 5 active, 1 intermittent, 24 abandoned. 1 miner has died and 372 accidents have been reported at these mines between 1983 and 2022. Inspectors have issued 685 citations.
Every mine MSHA has registered in Lake 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.
- Mines on register
- 30
- Active
- 5
- Fatalities on record
- 1
- Citations issued
- 685
ⓘ
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 |
|---|---|---|---|
| Clearlake Lava Inc | 3 | 2 | 0 |
| Homestake Mining Company Of California | 2 | 0 | 1 |
| Ace Concrete | 2 | 0 | 0 |
| Blue Rock Quarry | 2 | 0 | 0 |
| Clearlake Redi-Mix Inc | 2 | 0 | 0 |
| Granite Construction Co | 2 | 1 | 0 |
| Konocti Rock | 2 | 0 | 0 |
| Al Hunt'S Sand & Gravel | 1 | 0 | 0 |
| Baldwin Contracting Company Inc | 1 | 0 | 0 |
| Diamond J Corporation | 1 | 0 | 0 |
-
CLEARLAKE LAVAActive 0 fatal 99 citationsSurface metal/non-metal · Clearlake Lava Inc · MSHA ID 0401036
-
Highway 175 QuarryActive 0 fatal 49 citationsSurface metal/non-metal · Granite Construction Co · MSHA ID 0405336
-
DNA Ridge RockActive 0 fatal 105 citationsSurface metal/non-metal · DNA Ridge Rock · MSHA ID 0401806
-
S Bar S QuarryActive 0 fatal 60 citationsSurface metal/non-metal · S-Bar-S Quarry · MSHA ID 0404538
-
Pt Lakeview Rock & Redi MixActive 0 fatal 78 citationsSurface metal/non-metal · Clearlake Lava Inc · MSHA ID 0403608
-
McLaughlin MineAbandoned 1 fatal 9 citationsSurface metal/non-metal · Homestake Mining Company of California · MSHA ID 0404462
-
Hidden Valley Sand & GravelAbandoned 0 fatal 93 citationsSurface metal/non-metal · Clearlake Lava Inc · MSHA ID 0401930
-
Diamond J CorpAbandoned 0 fatal 84 citationsSurface metal/non-metal · Diamond J Corporation · MSHA ID 0405457
-
Indian Creek QuarryAbandoned 0 fatal 0 citationsSurface metal/non-metal · Parnum Paving Inc · MSHA ID 0405185
-
Clearlake Cinder Chip Co.Abandoned 0 fatal 46 citationsSurface metal/non-metal · Robin Thomas Corporation · MSHA ID 0401017
-
Kelsey Creek MillIntermittent 0 fatal 42 citationsSurface metal/non-metal · Clearlake Redi Mix Inc · MSHA ID 0401728
-
KelseyvilleAbandoned 0 fatal 4 citationsSurface metal/non-metal · Granite Construction Co · MSHA ID 0401835
-
Diamond J RanchAbandoned 0 fatal 3 citationsSurface metal/non-metal · Dutra Materials · MSHA ID 0405211
-
Lake County Rock Inc Portable CrusherAbandoned 0 fatal 0 citationsSurface metal/non-metal · Lake County Rock · MSHA ID 0404834
-
Mc Laughlin Exploration Decline (94)Abandoned 0 fatal 0 citationsUnderground metal/non-metal · Homestake Mining Company Of California · MSHA ID 0404568
-
BLUE ROCK QUARRY IIAbandoned 0 fatal 7 citationsSurface metal/non-metal · Blue Rock Quarry · MSHA ID 0405404
-
MIDDLE CREEK FACILITYAbandoned 0 fatal 6 citationsSurface metal/non-metal · Pivniska Trucking · MSHA ID 0405402
-
Ace MillAbandoned 0 fatal 0 citationsSurface metal/non-metal · Ace Concrete · MSHA ID 0404036
-
Ace PitAbandoned 0 fatal 0 citationsSurface metal/non-metal · Ace Concrete · MSHA ID 0404257
-
BLUE ROCK QUARRYAbandoned 0 fatal 0 citationsSurface metal/non-metal · Blue Rock Quarry · MSHA ID 0405296
-
Bottlerock AggregatesAbandoned 0 fatal 0 citationsSurface metal/non-metal · Baldwin Contracting Company Inc · MSHA ID 0404609
-
Cache CreekAbandoned 0 fatal 0 citationsSurface metal/non-metal · Clearlake Redi-Mix Inc · MSHA ID 0405005
-
Clearlake Red Lava Pit & MillAbandoned 0 fatal 0 citationsSurface metal/non-metal · Konocti Rock · MSHA ID 0404273
-
Diamond D Sand And GravelAbandoned 0 fatal 0 citationsSurface metal/non-metal · Machinery Credit Corp · MSHA ID 0404219
-
Ellen Pit And MillAbandoned 0 fatal 0 citationsSurface metal/non-metal · Al Hunt'S Sand & Gravel · MSHA ID 0404297
-
Frazell MillAbandoned 0 fatal 0 citationsSurface metal/non-metal · F M Frazell Inc · MSHA ID 0401761
-
Konocti RockAbandoned 0 fatal 0 citationsSurface metal/non-metal · Konocti Rock · MSHA ID 0403211
-
Middle CreekAbandoned 0 fatal 0 citationsSurface metal/non-metal · Lange Brothers Construction Inc · MSHA ID 0404038
-
Petray PitAbandoned 0 fatal 0 citationsmetal/non-metal · Petray Gravel · MSHA ID 0404902
-
Putah Creek PlantAbandoned 0 fatal 0 citationsSurface metal/non-metal · Hitchcock Brothers Cinders · MSHA ID 0403210
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.