Total reported releases
Total reported releases at Steel Dynamics Inc-Flat Roll Div have risen 99% since 2010 (through 2024).
TRI facility · TRI 2024 reporting year
Steel Dynamics Inc-Flat Roll Div
Total reported releases 1.0M lb rose sharply year over year (+62%). Total releases concentrations are up 99% since 2010.
4500 COUNTY RD 59, Butler, Indiana · 331110 · Primary Metals · operated by Steel Dynamics INC
Anomaly engine
Notable Signals
Manganese compounds
Manganese compounds at Steel Dynamics Inc-Flat Roll Div have risen 65% since 2010 (through 2024).
Zinc compounds
Zinc compounds at Steel Dynamics Inc-Flat Roll Div have risen 56% since 2010 (through 2024).
Certain glycol ethers
Certain glycol ethers releases at Steel Dynamics Inc-Flat Roll Div rose from 4k lb to 59k lb (16.6×) 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
Manganese compounds
Manganese compounds concentrations are up 65% since 2010.
Zinc compounds
Zinc compounds concentrations are up 56% since 2010.
Xylene (mixed isomers)
Xylene (mixed isomers) concentrations have more than doubled since 2017.
Certain glycol ethers
Certain glycol ethers concentrations have more than doubled since 2010.
n-Butyl alcohol
n-Butyl alcohol concentrations have more than doubled since 2017.
Copper compounds
Copper compounds concentrations are up 62% 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.
Nickel compounds
Nickel compounds concentrations are up 64% since 2010.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (2 Census block groups, population-weighted demographics): a population of 2,099. Why we surface this →
28.4%
Low-income
3.3%
People of color
7.5%
Under age 5
14.5%
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.