Mining Incidents

Richmond Mill/Stockton: 1 reportable incident Metal/Non-Metal

Chemstar Lime Company · Facility
Controlled by Lhoist Group
Contra Costa County, CA  ·  Abandoned
MSHA Mine ID: 0402315

Richmond Mill/Stockton has had no fatalities among 1 reportable incident since 1986.

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Fatalities
0
Total incidents
1
Years on record
1986
Latest incident
Apr 1986
Ownership history
  1. Flintkote Company 1950 to 1980
  2. Genstar Lime Company 1980 to 1986
  3. Chemstar Lime Company 1986 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
1990 6
1989 9
1988 8
1987 10
1986 10
1985 11
1984 12
1983 11
Source: MSHA quarterly employment and production, updated weekly; years before 2000 come from MSHA's archived Part 50 employment files.

Richmond Mill/Stockton sits in Contra Costa County, California, where the Census mining category is 0.1% of county employment.

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.
Contra Costa County, California · Population 1,161,458
0.1%
Mining share of county employment
$125,727
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
No fatalities recorded at this mine.

Reportable incidents

1 on file

1986 · 1 incident

April 2, 1986 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Genstar Lime Company · Fall from scaffolds, walkways, platforms

A WALKWAY HINGE8 SO IT MAY BE LOWERRED ONTO BULK TRUCKS FOR LOADING BROKE WELD AT HINGE ,WALKWAY FELL.