Hecla Mining Co
2 facilities · 2 states · 434.2M lbs total releases
Hecla Mining Co operates 2 facilities reporting to the EPA Toxics Release Inventory, with combined releases of 434.2M lbs. 6 of the 24 chemicals reported are classified as carcinogens.
Hecla Mining Co appears in the EPA Toxics Release Inventory as the parent or reported corporate owner of 2 individual facilities filing Form R disclosures under EPCRA Section 313. Operations span 2 states, and across all sites the company has disclosed a cumulative release total of 434.2M lbs.
The aggregated chemical footprint covers 24 distinct substances, of which 6 carry a carcinogen classification in the EPA Toxics Release Inventory. The heaviest-reporting state by release volume is Alaska (1 facility, 375.5M lbs), followed by Idaho at 58.7M lbs. The single largest facility disclosure is HECLA GREENS CREEK MINING CO in AK at 375.5M lbs.
Parent-company aggregation uses the company name as reported by each facility on its annual TRI filing; mergers, divestitures, or reporting variations across subsidiaries can produce inconsistent attribution year over year. All values are self-reported estimates under federal community right-to-know law and are not weighted by toxicity. Inclusion in the TRI does not establish a health risk to the public, it documents the regulatory disclosure record.
Where does this company operate?
| State | Facilities | Total Releases |
|---|---|---|
| Alaska | 1 | 375.5M lbs |
| Idaho | 1 | 58.7M lbs |
Facilities (2)
| Facility | Releases |
|---|---|
| Hecla Greens Creek Mining Co Juneau, AK | 375.5M lbs |
| Hecla Ltd Lucky Friday Mine Unit Mullan, ID | 58.7M lbs |
Frequently Asked Questions
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About This Data
Parent company data comes from the EPA Toxics Release Inventory (TRI). Release totals include all media (air, water, land, off-site transfers). Company names are reported as-is by facilities; some variations may refer to the same corporate entity.
Source: U.S. Environmental Protection Agency, TRI Basic Data Files U.S. Environmental Protection Agency, TRI Basic Data Files
Read our methodology - how this data is sourced, computed, and verified.
Related
Every figure on PlainEnviro is rendered directly from EPA environmental compliance data, no number is typed in by an editor. Company release figures are computed directly from EPA Toxic Release Inventory data. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.