Solvay - Maiden Rock Mine

What they make

Where it is

Other plants nearby

Every listed plant in Silver Bow County

Also at this address

No other federal record shares this street address.

Where this record comes from

2 sources hold this plant, and 7 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

EPA cross-references this facility in MT-CEDARS, RCRAINFO · EPA site type STATIONARY.

• EPA ECHO compliance recordsOPERATING
  first seen MAY 2023 · last seen MAY 2023
• EPA Facility Registry ServiceEXISTENCE
  Record 110018873405 · first seen FEB 2015 · last seen FEB 2015

IN SILVER BOW COUNTY1 other plant shares this one’s industry (Sawmills and Wood Preservation, NAICS 3211); 0 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name

EPA: SOLVAY - MAIDEN ROCK MINE · OCT 2026

Street address

EPA: S1/2 NE1/4 NE1/4 T2S R9W S5 · OCT 2026

City

EPA: MELROSE · OCT 2026

State

EPA: MT · OCT 2026

County (FIPS code)

EPA: 30093 · OCT 2026

Coordinates

EPA: 45.692859,-112.722008 · OCT 2026

Hazardous waste generator (RCRA)

EPA ECHO: VSQG · OCT 2026