EPA TRI Facility · Primary Metals
US Antimony Corp
Thompson Falls, MT
- Total releases
- 9.7K lbs
- Chemicals reported
- 1
- Latest report
- 2020
- Primary pathway
- Air Releases
AIR Form-R mix
US Antimony Corp: how the 9.7K lbs splits
9.7K lbs across all reported pathways
- Air Releases 9.7K lbs 100.0%
US Antimony Corp's 9.7K lbs Form-R total is AIR - air releases is 100.0% of the bar. Off-site transfers stay separate from air, water, and land releases. Leading chemical by pounds: Antimony.
LIGHT volume AIR pathway CLEAN
US Antimony Corp is an EPA Toxics Release Inventory reporter in Thompson Falls, MT, in the primary metals sector. It reported 4.3K lbs of releases across 1 chemical in 2020, and 9.7K lbs in total across its 2019-2020 reporting years. That ranks 9,883 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Montana's 67 reporting TRI sites, pounds #1 is not chemical-count #1. US Antimony Corp is pounds #40 and chemical-count #57 at 9.7K lbs. Montana Resources LLC leads reported pounds (215.2M lbs) at 12 chemicals (chemical-count #11). Phillips 66 Co Billings Refinery leads chemical count at 39 chemicals (465.0K lbs, pounds #16). Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Thompson River Lumber; Idaho Forest Group- St. Regis; Cityservicevalcon LLC Kalispell Bulk Facility; Jtl Group-Kalispell DBA Knife River - Kalispell. Similar-scale Primary Metals peers outside Montana: Heraeus Precious Metals Na LLC; Ashland Foundry & Machine Works; Special Metals Corp; Iwg Nest Inc- Boonville. Largest disclosed chemicals by pounds: Antimony.
US Antimony Corp stamps LIGHT volume with a dominant AIR pathway (100.0% air releases) across 1 chemical. Cumulative Form-R extract: 9.7K lbs (2019–2020). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Heraeus Precious Metals Na LLC and Ashland Foundry & Machine Works.
US Antimony Corp vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
9.7K lbs Top 38% higher than 62% of 25,986 reporting TRI facilities
Each bar is a $1M-wide band; taller bars hold more reporting TRI facilities. The dashed line and filled bar mark this facility. Hover, focus, or tap a bar for its full count, share, and position.
Source U.S. Environmental Protection Agency, Toxics Release Inventory · 2023 reporting year
US Antimony Corp inside Sanders's TRI pounds
Among the 1,603 Primary Metals facilities in this database, US Antimony Corp reports the 745th-largest volume (9.7K lbs). This one site accounts for 99.0% of every pound reported in Sanders. Its reported volume is concentrated rather than spread: Antimony alone is 100% of the total. Scale peers outside Montana include Heraeus Precious Metals Na LLC and Ashland Foundry & Machine Works.
County-dominant here means ≥25% of Sanders's reported pounds (9.8K lbs county total). Shares only print when the site reports ≥1,000 lbs.
US Antimony Corp Form-R facts
Compare this facility
See how US Antimony Corp stacks up against nearby facilities and the typical reporter.
98.5× more than the comparison
About the same as the comparison
Comparison reflects reported pounds and chemical counts, not toxicity or health risk. Averages cover facilities reporting any release.
How does this facility release toxic chemicals?
How US Antimony Corp releases toxic chemicals into the environment. Total: 9.7K lbs.
Emissions Trend Summary
From 2019 to 2020, total releases decreased by 21% (5.4K lbs to 4.3K lbs).
US Antimony Corp: annual Form-R pounds
LIGHT site · AIR pathway · TRI years 2019–2020
- 2019 0
- 2020 0
What this shows US Antimony Corp year-over-year reported totals (decreased by 21% from 2019 to 2020). TRI figures are self-reported estimates and can swing with production, waste handling, and reporting changes, not only with controls. Lead chemical in the extract: Antimony.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 5.4K lbs | 1 |
| 2020 | 4.3K lbs | 1 |
Chemical Releases
Aggregated across all reporting years (2019–2020). Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Antimony | 9.7K lbs | - |
US Antimony Corp · AIR-pathway site
Nearest TRI Facilities to US Antimony Corp
Closest other reporters in Montana - including Thompson River Lumber, Idaho Forest Group- St. Regis, Cityservicevalcon LLC Kalispell Bulk Facility, ordered by distance.
Showing 8 of 66 other reporting facilities in Montana.
Similar Primary Metals Facilities
Other Primary Metals facilities with similar total release volumes (±80%), outside Montana - e.g. Heraeus Precious Metals Na LLC, Ashland Foundry & Machine Works, Special Metals Corp.
Compare beyond Montana
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest US Antimony Corp on cumulative reported pounds (9.7K lbs) and distinct chemical count (1). Release-pound peers include Nvent Hoffman, Matt Brewery Co Inc., Milliken & Co Live Oak. Chemical-count peers include Ecoelectrica LP, Planta Penuelas, Tallaboa Puerto Rico LLC. Neighborhoods are forced disjoint so each axis surfaces a different set of sites.
Similar reported release pounds
Nearest out-of-state reporters (≥1,000 lbs) by absolute TRI pounds, not same-industry or same-county neighbors.
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
About TRI Data
Data as of 2023 reporting year. Source: U.S. Environmental Protection Agency (EPA) Toxic Release Inventory.
On this page the largest disclosed chemicals include Antimony; nearby reporters include Thompson River Lumber. US Antimony Corp stamps LIGHT volume · AIR pathway · CLEAN carcinogen-lbs on this Form-R extract. Totals are self-reported estimates under EPCRA §313, not measured stack emissions or a health-risk score.
Use and verify this record
This US Antimony Corp TRI extract (LIGHT · AIR · CLEAN · lead Antimony) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
US Antimony Corp totals are self-reported EPCRA §313 estimates for Thompson Falls, MT, latest year 2020. Form-R rows span 2019–2020 (2 years). NAICS 331410 · Primary Metals. 99.0% of Sanders TRI pounds in this extract. Nearest ABS peer: Nvent Hoffman (Δ 3 lbs). Pounds ≠ exposure.
US Antimony Corp stamps LIGHT volume · AIR pathway · CLEAN · lead Antimony. PlainEnviro renders this EPA Form-R extract from its pipeline; no figure is typed in by an editor. Corrections: editorial policy.
All federal data sources used on this page
- EPA Toxics Release Inventory (TRI) Basic Data Files - annual self-reported chemical-release filings. epa.gov
- EPA TRI Program reference - how chemicals and reported releases are counted. epa.gov
- EPA Facility Registry Service - facility location and identity. epa.gov
- EPA ECHO - regulatory and compliance context. epa.gov
- EPA Envirofacts - the EPA data warehouse exposing these datasets. epa.gov