Mines in Madera County, California
Madera County, California has 14 mines on MSHA's register: 2 active, 1 intermittent, 11 abandoned. 1 miner has died and 165 accidents have been reported at these mines between 1983 and 2024. Inspectors have issued 278 citations.
Every mine MSHA has registered in Madera 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
- 14
- Active
- 2
- Fatalities on record
- 1
- Citations issued
- 278
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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 |
|---|---|---|---|
| San Joaquin Sand & Gravel | 2 | 0 | 0 |
| Calaveras Materials Inc | 1 | 0 | 1 |
| Big Dreamer Mining Company | 1 | 0 | 0 |
| California Industrial Minerals Company | 1 | 0 | 0 |
| CalMat Co. | 1 | 1 | 0 |
| Cold Spring Granite Company | 1 | 1 | 0 |
| Custom Crushing Industries, Inc | 1 | 0 | 0 |
| Hans Sumpf Company Inc | 1 | 0 | 0 |
| Kiewit Infrastructure West Co. | 1 | 0 | 0 |
| Knowles Granite | 1 | 0 | 0 |
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Sierra WhiteActive 0 fatal 87 citationsSurface metal/non-metal · Cold Spring Granite Company · MSHA ID 0400232
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Austin QuarryActive 0 fatal 8 citationsSurface metal/non-metal · CalMat Co. · MSHA ID 0405954
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Blackstone Pit & MillAbandoned 1 fatal 21 citationsSurface metal/non-metal · Calaveras Materials Inc · MSHA ID 0401966
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San Joaquin Sand & GravelAbandoned 0 fatal 51 citationsSurface metal/non-metal · San Joaquin Sand & Gravel · MSHA ID 0401847
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Strawberry MineAbandoned 0 fatal 0 citationsUnderground metal/non-metal · Teledyne Tungsten · MSHA ID 0403143
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Madera Quarry, Inc.Intermittent 0 fatal 38 citationsSurface metal/non-metal · Madera Quarry Inc. · MSHA ID 0405825
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Raymond QuarryAbandoned 0 fatal 48 citationsSurface metal/non-metal · Outback Inc. · MSHA ID 0405578
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Ione Track PlantAbandoned 0 fatal 14 citationsSurface metal/non-metal · Custom Crushing Industries, Inc · MSHA ID 0405367
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Wishon QuarryAbandoned 0 fatal 11 citationsSurface metal/non-metal · Kiewit Infrastructure West Co. · MSHA ID 0405817
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Big Dreamer Mine And MillAbandoned 0 fatal 0 citationsSurface metal/non-metal · Big Dreamer Mining Company · MSHA ID 0402527
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Hans Sumpf Pit & MillAbandoned 0 fatal 0 citationsSurface metal/non-metal · Hans Sumpf Company Inc · MSHA ID 0400559
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KNOWLES GRANITEAbandoned 0 fatal 0 citationsFacility metal/non-metal · Knowles Granite · MSHA ID 0405334
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San Joaquin Sand & Gravel Portable PlantAbandoned 0 fatal 0 citationsSurface metal/non-metal · San Joaquin Sand & Gravel · MSHA ID 0405209
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Taylors Pit And MillAbandoned 0 fatal 0 citationsSurface metal/non-metal · California Industrial Minerals Company · MSHA ID 0401015
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.