Western Fiberglass - Salt Lake City Plant
945 S 4400 W, Salt Lake City, UT 84104
LIKELY ACTIVELAST SEEN IN FEDERAL DATA JUL 2026 · 2 SOURCES
Operating signal within 24 months, or from a single source.
What they make
Mineral Wool Manufacturing327993Where it is
40.75112, -111.99557 · CENSUS TIGER
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Thompson Granite and Stone INC | Salt Lake City | Cut Stone and Stone Product Manufacturing 327991 | UNVERIFIED | 1.7 KM |
| R.s. Hughes Company, INC. | Salt Lake City | Hardware Manufacturing 332510 | LIKELY ACTIVE | 2.9 KM |
| PS Utah Salt Lake City 5570 W 1730 S | Salt Lake City | Cut Stone and Stone Product Manufacturing 327991 | LIKELY ACTIVE | 3.2 KM |
| Fiber Science Division | Salt Lake City | All Other Miscellaneous Textile Product Mills 314999 | UNVERIFIED | 3.5 KM |
| Procast Marble INC | Salt Lake City | Cut Stone and Stone Product Manufacturing 327991 | UNVERIFIED | 3.0 KM |
Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 2 FEDERAL SOURCES, 6 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 AIRS/AFS, CEDRI, CIM, EIS, NPDES, RCRAINFO, TRIS · EPA site type STATIONARY.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| EPA ECHO | OPERATING | JUL 2026 | JUL 2026 |
| EPA FRS | EXISTENCE | FEB 2025 | FEB 2025 |
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 |
| RCRA GENERATOR STATUS | EPA ECHO | SEP 2026 |
| STATE | EPA FRS | JUL 2026 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.