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Big Four Tunnel: 1 reportable incident Metal/Non-Metal

Controlled by Wilson Donald W
Lake County, CO  ·  Abandoned
MSHA Mine ID: 0504230

Big Four Tunnel has had no fatalities among 1 reportable incident since 1987.

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Fatalities
0
Total incidents
1
Years on record
1987
Latest incident
Jul 1987
Ownership history
  1. Highland Consolidated Mining Corp 1987 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
1987 3
Source: MSHA quarterly employment and production, updated weekly; years before 2000 come from MSHA's archived Part 50 employment files.

Big Four Tunnel sits in Lake County, Colorado, where the Census mining category is 3.4% 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.
Lake County, Colorado · Population 7,411
3.4%
Mining share of county employment
$93,655
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

1987 · 1 incident

July 13, 1987 CO · Metal/Non-Metal ledgeman/hand, quarry man POWERED HAULAGE
Highland Consolidated Mining Corp · Caught in, under or between a moving and a stationary object

EMP WAS HELPING3ANOTHER EMP DUMP A LOADED ROCKER BOTOM ORE CAR. IN EMP WAS STANDING AT END OF CAR AND GOT FINGERS OF LEFT HAND ON ROCKER RACK PART OF CAR. LEFT HAND MIDDLE FINGER WAS CRUSHED, RESULTING IN AM1UTATION OF MIDDLE FINGER AT SECOND JOINT