Manganese compounds
Manganese compounds at Asarco LLC Ray Complex/ Hayden Smelter & Concentrator have more than doubled since 2010 (through 2024).
TRI facility · TRI 2024 reporting year
Asarco LLC Ray Complex/ Hayden Smelter & Concentrator
Total reported releases 55.0M lb rose modestly year over year (+11%). Total releases concentrations are up 77% since 2010.
6094 N ASARCO ROAD, Hayden, Arizona · 331410 · Primary Metals · operated by Americas Mining CORP
Anomaly engine
Notable Signals
Zinc compounds
Zinc compounds at Asarco LLC Ray Complex/ Hayden Smelter & Concentrator have more than doubled since 2010 (through 2024).
Total reported releases
Total reported releases at Asarco LLC Ray Complex/ Hayden Smelter & Concentrator have risen 77% since 2010 (through 2024).
Copper compounds
Copper compounds releases at Asarco LLC Ray Complex/ Hayden Smelter & Concentrator rose from 10.2M lb to 18.8M lb between 2023 and 2024.
Showing the 4 most editorially weighted signals out of 6. Lower-severity signals fold into the chemical breakdown and history charts below.
Chemicals reported · most recent year
What This Facility Releases
Zinc compounds
Zinc compounds concentrations have more than doubled since 2010.
Copper compounds
Copper compounds concentrations are up 42% since 2010.
Lead compounds
Lead compounds concentrations are roughly unchanged from 2010.
Manganese compounds
Manganese compounds concentrations have more than doubled since 2010.
Arsenic compounds
Arsenic compounds concentrations are roughly unchanged from 2010.
Cobalt compounds
Cobalt compounds concentrations have more than doubled since 2010.
Chromium compounds (except for chromite ore mined in the Transvaal Region)
Chromium compounds (except for chromite ore mined in the Transvaal Region) concentrations are roughly unchanged from 2010.
Barium compounds (except for barium sulfate (CAS No. 7727-43-7))
Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) concentrations have fallen 47% since 2010.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (1 Census block groups, population-weighted demographics): a population of 654. Why we surface this →
59.2%
Low-income
85.5%
People of color
5.0%
Under age 5
21.1%
Over age 64
Source: Census ACS 2018-2022 block-group demographics, population-weighted across the 3-mile buffer around this facility (from USEPA-clone/EJAM-open blockgroupstats). 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.