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MSHA mine register by county

Mines in Colusa County, California

Colusa County, California has 6 mines on MSHA's register: 6 abandoned. 8 accidents have been reported at these mines between 1991 and 2006. Inspectors have issued 60 citations.

Every mine MSHA has registered in Colusa 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 Colusa County →

Mines on register
6
Active
0
Fatalities on record
0
Citations issued
60
0 underground · 5 surface · 1 facilities 0 coal · 6 metal and non-metal 6 abandoned 8 reported accidents, 1991–2006
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.
Colusa County, California · Population 21,895
0.0%
Mining share of county employment
$75,149
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
On the map 
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MSHA-registered mine, any status

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.

Operators with the most mines herecurrent operator of record
Operator Mines Active Fatalities
Arbuckle Rock Products Ltd 1 0 0
Brownstone Quarry 1 0 0
Clearlake Redi-Mix Inc 1 0 0
Cortina Rock Products 1 0 0
Princeton Ranch 1 0 0
Robert C Cousineau 1 0 0
Mines in Colusa County6 on register
  1. O'Sullivan Ranch Pit
    Surface metal/non-metal · Clearlake Redi-Mix Inc · MSHA ID 0405273
    Abandoned
  2. Brownstone Quarry
    Surface metal/non-metal · Brownstone Quarry · MSHA ID 0405453
    Abandoned
  3. Arbuckle Rock Products Ltd
    Surface metal/non-metal · Arbuckle Rock Products Ltd · MSHA ID 0405124
    Abandoned
  4. Cortina Mill
    Facility metal/non-metal · Cortina Rock Products · MSHA ID 0401744
    Abandoned
  5. GRAVEL PLANT
    Surface metal/non-metal · Robert C Cousineau · MSHA ID 0405298
    Abandoned
  6. Princeton Ranch Pit
    Surface metal/non-metal · Princeton Ranch · MSHA ID 0404316
    Abandoned

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.

Other counties in CaliforniaAll counties →
How to read these numbers

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.