Operating signal within 12 months from two or more independent sources.
What they make
Industrial Gas Manufacturing325120Hemlock Semiconductor manufactures polysilicon, described as hyper-pure polysilicon and other silicon-based products. The company serves the electronics, cell phones, and solar panel industries. No certifications are named in the text.
SUMMARIZED FROM THE COMPANY’S OWN WEBSITE
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Dow Corning CORP Healthcare Inds Materials Site | Hemlock | All Other Basic Organic Chemical Manufacturing 325199 | UNVERIFIED | 0.7 KM |
| Specialty Manufacturing Inc | Saginaw | All Other Basic Organic Chemical Manufacturing 325199 | ACTIVE | 8.9 KM |
| Strong Arm Investments LLC | Saginaw | Surgical and Medical Instrument Manufacturing 339112 | LIKELY ACTIVE | 12.4 KM |
| Dow Silicones Corporation | Midland | All Other Basic Organic Chemical Manufacturing 325199 | ACTIVE | 17.3 KM |
| Dow Silicones Corporation | Auburn | All Other Basic Organic Chemical Manufacturing 325199 | UNVERIFIED | 17.7 KM |
Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 5 FEDERAL SOURCES, 9 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, BR, CEDRI, E-GGRT, EIS, ICIS, NCDB, NPDES, OSHA-OIS, RCRAINFO, TRIS, TSCA · EPA site type STATIONARY.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| COMPANY SITE | OPERATING | JUL 2026 | AUG 2026 |
| SAM GOV | OPERATING | APR 2026 | APR 2026 |
| OSHA ITA | OPERATING | DEC 2025 | DEC 2025 |
| EPA TRI | OPERATING | DEC 2023 | DEC 2023 |
| EPA FRS | EXISTENCE | JAN 2015 | OCT 2017 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | EPA FRS | JUL 2026 |
| ADDRESS LINE1 | SAM GOV | APR 2026 |
| CAGE CODE | SAM GOV | APR 2026 |
| CITY | EPA FRS | JUL 2026 |
| CITY | SAM GOV | APR 2026 |
| EMPLOYEE BAND | OSHA ITA | DEC 2025 |
| GEOM | CENSUS GEOCODER | JUL 2026 |
| GEOM | EPA FRS | JUL 2026 |
| NAME | EPA FRS | JUL 2026 |
| NAME | SAM GOV | APR 2026 |
| REGISTRATION EXPIRATION | SAM GOV | APR 2026 |
| STATE | EPA FRS | JUL 2026 |
| STATE | SAM GOV | APR 2026 |
| WEBSITE | SAM GOV | APR 2026 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.