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Boca Quarry: 6 reportable incidents Metal/Non-Metal

Controlled by Henry Matoza Jr
Nevada County, CA  ·  Abandoned
MSHA Mine ID: 0404748

MSHA record for Boca Quarry (mine ID 0404748). Fatalities, non-fatal incidents grouped by year, current operator and controller, and mine context.

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Fatalities
0
Total incidents
6
Years on record
1988–1990
Latest incident
Jan 1990
Ownership history
  1. Hillsdale Rock Company 1985 to present
Source: MSHA controller and operator history, updated weekly.

Boca Quarry sits in Nevada 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.
Nevada County, California · Population 102,452
0.1%
Mining share of county employment
$84,905
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
No fatalities recorded at this mine.

Reportable incidents

6 on file

1990 · 1 incident

1989 · 1 incident

1988 · 4 incidents

September 14, 1988 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Hillsdale Rock Company · Caught in, under or between (Not Elsewhere Classified)

EMPLOYE SLIPPED WHILE REPAIRING LOADER BUCKET & CRUSHED HIS FINGER WITH LOADING LOCK

January 29, 1988 CA · Metal/Non-Metal clerk, timekeeper, office worker, director of sales SLIP OR FALL OF PERSON
Hillsdale Rock Company · Fall to the walkway or working surface

EMPLOYEE LEFT CAR ENGINE RUNNING AND WAS WAHSING WINDOW WHEN AUTO SLIPPED INTO FEAR AND TOOK OFF EMPLOYEE FELL WHILE CHASING HER AUTO