Mining Incidents

TWIN FALLS PLANT: 1 reportable incident Metal/Non-Metal

Monroc Inc · Surface
Controlled by U S Aggregate Inc
Twin Falls County, ID  ·  Abandoned
MSHA Mine ID: 1000639

MSHA record for TWIN FALLS PLANT (mine ID 1000639). Fatalities, non-fatal incidents grouped by year, current operator and controller, and mine context.

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Fatalities
0
Total incidents
1
Years on record
1993
Latest incident
Sep 1993
Ownership history
  1. Monroc Inc 1950 to 1986
  2. Monroc Inc 1986 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2000 0
Source: MSHA quarterly employment and production, updated weekly.

TWIN FALLS PLANT sits in Twin Falls County, Idaho, where the Census mining category is 0.3% 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.
Twin Falls County, Idaho · Population 92,121
0.3%
Mining share of county employment
$65,338
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
Quarterly safety rates
Citations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
Citations per million employee-hours, as reported to MSHA
Quarter Hours worked Citations S&S Per 1M hrs
2000 Q1 0 0 0
No fatalities recorded at this mine.

Reportable incidents

1 on file

1993 · 1 incident

September 27, 1993 ID · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Monroc Inc · Struck against stationary object

CUT HAND ON PIPE-REQUIRED 5 STITCHES.