Manganese compounds
Manganese compounds at Freeport-Mcmoran Miami INC have risen 68% since 2010 (through 2024).
TRI facility · TRI 2024 reporting year
Freeport-Mcmoran Miami INC
Total reported releases 27.0M lb held roughly steady year over year (+4%). Total releases concentrations are roughly unchanged from 2010.
5701 NEW ST, Claypool, Arizona · 331410 · Primary Metals · operated by Freeport-Mcmoran INC
Anomaly engine
Notable Signals
Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)
Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) releases at Freeport-Mcmoran Miami INC rose from 321k lb to 593k lb between 2023 and 2024.
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) at Freeport-Mcmoran Miami INC have more than halved since 2010 (through 2024).
Chemicals reported · most recent year
What This Facility Releases
Copper And Copper Compounds
Copper And Copper Compounds concentrations are roughly unchanged from 2010.
Zinc compounds
Zinc compounds concentrations are up 19% since 2010.
Lead And Lead Compounds
Lead And Lead Compounds concentrations have fallen 48% since 2010.
Manganese compounds
Manganese compounds concentrations are up 68% since 2010.
Barium compounds (except for barium sulfate (CAS No. 7727-43-7))
Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) concentrations are up 12% since 2010.
Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)
Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) concentrations are up 48% since 2010.
Antimony compounds
Antimony compounds concentrations have fallen 21% since 2010.
Cobalt compounds
Cobalt compounds concentrations are up 22% since 2010.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (6 Census block groups, population-weighted demographics): a population of 5,720. Why we surface this →
37.5%
Low-income
49.4%
People of color
4.9%
Under age 5
18.5%
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.