Stillwater Mining CO Smelter
Columbus, MT 59019
LIKELY ACTIVELAST SEEN IN FEDERAL DATA APR 2025 · 2 SOURCES
Operating signal within 24 months, or from a single source.
What they make
Nonferrous Metal (except Aluminum) Smelting and Refining331410Where it is
45.68500, -109.23500 · CENSUS TIGER
COUNTY
METRO AREA
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Stillwater Mining Company Base Metals Refinery | Columbus | Nonferrous Metal (except Aluminum) Smelting and Refining 331410 | LIKELY ACTIVE | 5.8 KM |
| Stillwater Mining CO Smelter | Columbus | Nonferrous Metal (except Aluminum) Smelting and Refining 331410 | UNVERIFIED | 5.9 KM |
| Stillwater Mining Company | Columbus | Nonferrous Metal (except Aluminum) Smelting and Refining 331419 | UNVERIFIED | 5.9 KM |
| Smc Precious Metals Smelter & Base Metal Refy | Columbus | Nonferrous Metal (except Aluminum) Smelting and Refining 331410 | UNVERIFIED | 5.9 KM |
| Columbus Processing Facility | Columbus | Nonferrous Metal (except Aluminum) Smelting and Refining 331419 | UNVERIFIED | 6.0 KM |
Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 2 FEDERAL SOURCES, 5 FIELDS
Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.
EPA cross-references this facility in AIR, AIRS/AFS, MT-CEDARS · EPA site type STATIONARY.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| EPA ECHO | OPERATING | APR 2025 | APR 2025 |
| EPA FRS | EXISTENCE | JUN 2017 | JUN 2017 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | EPA FRS | JUL 2026 |
| CITY | EPA FRS | JUL 2026 |
| GEOM | EPA FRS | JUL 2026 |
| NAME | EPA FRS | JUL 2026 |
| STATE | EPA FRS | JUL 2026 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.