Mines in Mono County, California
Mono County, California has 19 mines on MSHA's register: 1 intermittent, 18 abandoned. 48 accidents have been reported at these mines between 1984 and 2021. Inspectors have issued 130 citations.
Every mine MSHA has registered in Mono 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
- 19
- Active
- 0
- Fatalities on record
- 0
- Citations issued
- 130
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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 |
|---|---|---|---|
| United States Pumice Company | 2 | 0 | 0 |
| Avocet Tungsten Inc | 1 | 0 | 0 |
| Briney Foundation | 1 | 0 | 0 |
| Desert Construction Company | 1 | 0 | 0 |
| Gorilla Milling & Mining Company | 1 | 0 | 0 |
| Granite Construction Company | 1 | 0 | 0 |
| H E Hunewill Construction Company Inc | 1 | 0 | 0 |
| Hunewill Ready Mix Company | 1 | 0 | 0 |
| Koppen Mining Construction Corp | 1 | 0 | 0 |
| Lakeview Partners | 1 | 0 | 0 |
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U S Pumice MillAbandoned 0 fatal 24 citationsFacility metal/non-metal · United States Pumice Company · MSHA ID 0401049
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PINE CREEK MINEAbandoned 0 fatal 0 citationsUnderground metal/non-metal · Avocet Tungsten Inc · MSHA ID 0400899
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Lee Vining Aggregate PlantAbandoned 0 fatal 38 citationsSurface metal/non-metal · Granite Construction Company · MSHA ID 0405234
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Cain Ranch Aggregate QuarryIntermittent 0 fatal 48 citationsSurface metal/non-metal · Marzano & Sons General Engineering Contractors Inc · MSHA ID 0405218
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Frank Sam Mine (U S Pumice Mine)Abandoned 0 fatal 19 citationsSurface metal/non-metal · United States Pumice Company · MSHA ID 0404225
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BeauregardAbandoned 0 fatal 0 citationsUnderground metal/non-metal · Mammoth Lakes Mining Corp · MSHA ID 0404513
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Syndicate MineAbandoned 0 fatal 0 citationsFacility metal/non-metal · Syndicate Development Inc · MSHA ID 0404617
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Cain Ranch CrusherAbandoned 0 fatal 1 citationsSurface metal/non-metal · Sierra Nevada Construction Inc. · MSHA ID 0405757
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Black Rock MineAbandoned 0 fatal 0 citationsUnderground metal/non-metal · Koppen Mining Construction Corp · MSHA ID 0404239
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Briney MineAbandoned 0 fatal 0 citationsUnderground metal/non-metal · Briney Foundation · MSHA ID 0404886
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Gorilla MineAbandoned 0 fatal 0 citationsUnderground metal/non-metal · Gorilla Milling & Mining Company · MSHA ID 0404703
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Hilton Creek MineAbandoned 0 fatal 0 citationsUnderground metal/non-metal · Martin Trost Associates · MSHA ID 0404461
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Hunewill Crushing PlantAbandoned 0 fatal 0 citationsSurface metal/non-metal · H E Hunewill Construction Company Inc · MSHA ID 0404728
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Log Cabin MineAbandoned 0 fatal 0 citationsUnderground metal/non-metal · United States Tile Company · MSHA ID 0404328
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Mammoth Creek PitAbandoned 0 fatal 0 citationsSurface metal/non-metal · Sierra Materials Inc · MSHA ID 0401948
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May LundyAbandoned 0 fatal 0 citationsUnderground metal/non-metal · Lakeview Partners · MSHA ID 0404520
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Plant #1 - DunmovinAbandoned 0 fatal 0 citationsSurface metal/non-metal · Desert Construction Company · MSHA ID 0404411
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Sierra QuarryAbandoned 0 fatal 0 citationsSurface metal/non-metal · Hunewill Ready Mix Company · MSHA ID 0404715
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Siltex Pit & Pacific MineAbandoned 0 fatal 0 citationsSurface metal/non-metal · Standard Industrial Minerals Inc · MSHA ID 0404440
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.