Mining Incidents

Humboldt Mill Metal/Non-Metal

Controlled by Rio Tinto Group
Ishpeming, Marquette County, MI  ·  Abandoned
MSHA Mine ID: 2003420

MSHA record for Humboldt Mill (mine ID 2003420). Fatalities, non-fatal incidents grouped by year, current operator and controller, and mine context.

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Fatalities
0
Total incidents
0
Years on record
Latest incident
Ownership history
  1. Kennecott Eagle Land LLC 2008 to present
Source: MSHA controller and operator history, updated weekly.

Humboldt Mill sits in Marquette County, Michigan, where the Census mining category is 2.7% 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.
Marquette County, Michigan · Population 66,430
2.7%
Mining share of county employment
$64,675
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.

No reportable incidents on file.

MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.