Cobalt compounds
Cobalt compounds at Eagle Mine Llc-Humboldt Mill have more than doubled since 2014 (through 2024).
TRI facility · TRI 2024 reporting year
Eagle Mine Llc-Humboldt Mill
Total reported releases 4.3M lb fell meaningfully year over year (-26%). Total releases concentrations are up 45% since 2014.
4547 COUNTY RD 601, Champion, Michigan · 212230 · Metal Mining · operated by Eagle Mine LLC
Anomaly engine
Notable Signals
Chemicals reported · most recent year
What This Facility Releases
Nickel compounds
Nickel compounds concentrations are up 42% since 2014.
Copper compounds
Copper compounds concentrations are up 30% since 2014.
Cobalt compounds
Cobalt compounds concentrations have more than doubled since 2014.
Lead compounds
Lead compounds concentrations have more than doubled since 2014.
Mercury compounds
Mercury compounds concentrations have more than doubled since 2014.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Marquette County County, MI (no Census block groups within 3 miles — falling back to containing county): a population of 66,376. Why we surface this →
13.6%
Low-income
8.6%
People of color
4.5%
Under age 5
19.7%
Over age 64
Source: Census ACS 2018-2022 (5-year), county-level fallback. Indicator-level percentile and EJ-disparity scores are surfaced on the county page and the state page — they describe wider regional exposure burdens, not effects attributable to a single facility.
Source. EPA Toxics Release Inventory · retrieved 2026-05-07. Reporting year 2024. TRI is a federal public-domain dataset under 17 USC §105.
What this is not. TRI quantifies releases reported by the facility under EPCRA §313 — not ambient air or water concentrations measured at receptors. We do not attribute individual health outcomes to specific facilities; that exceeds what the data can support.