Main Steel Inc/harmony

6 Whitney Dr, Harmony, PA 16037

LIKELY ACTIVELAST SEEN IN FEDERAL DATA MAR 2026 · 3 SOURCES

Operating signal within 24 months, or from a single source.

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What they make

Powder Metallurgy Part Manufacturing332117

Where it is

40.79808, -80.12144 · CENSUS TIGER

COUNTY

Butler County

METRO AREA

Pittsburgh, PA

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Other plants nearby

Facility	City	Industry	Status	Distance
Woodward, Incorporated	Mars	Custom Roll Forming 332114	LIKELY ACTIVE	11.0 KM
Ellwood City Forge Company	Ellwood City	Iron and Steel Forging 332111	ACTIVE	15.0 KM
Ellwood City Forge Company	Ellwood City	Iron and Steel Forging 332111	ACTIVE	16.4 KM
Damascus Steel Casting/new Brighton	New Brighton	Printing and Related Support Activities 323000	UNVERIFIED	16.7 KM
Vorteq Coil Finishers/valencia Plt	Valencia	Custom Roll Forming 332114	LIKELY ACTIVE	17.9 KM

Every listed plant in Butler County

Also at this address

No other federal record shares this street address.

Where this record comes from

3 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 AIR, AIRS/AFS, PA-EFACTS, RCRAINFO, SSTS, TRIS · EPA site type STATIONARY.

EPA ECHO compliance recordsOPERATING
first seen MAR 2026 · last seen MAR 2026
EPA Toxics Release InventoryOPERATING
first seen DEC 2023 · last seen DEC 2024
EPA Facility Registry ServiceEXISTENCE
Record 110001083504 · first seen JAN 2018 · last seen SEP 2018

ALSO RECORDED ASMAIN STEEL; MAIN STEEL POLISHING CO, INC.

IN BUTLER COUNTY7 other plants share this one’s industry (Forging and Stamping, NAICS 3321); 4 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: MAIN STEEL INC/HARMONY · OCT 2026
Street address: EPA: 6 WHITNEY DR · OCT 2026
City: EPA: HARMONY · OCT 2026
State: EPA: PA · OCT 2026
County (FIPS code): EPA: 42019 · OCT 2026
Coordinates: EPA: 40.79808,-80.12144 · OCT 2026
Hazardous waste generator (RCRA): EPA ECHO: VSQG · OCT 2026

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