Facility	City	Industry	Status	Distance
Lorain Tool Enterprises INC	Lorain	Machine Shops 332710	UNVERIFIED	5.0 KM
Nelson Stud Welding, INC.	Elyria	Bolt, Nut, Screw, Rivet, and Washer Manufacturing 332722	ACTIVE	7.7 KM
SEF - Nelson Stud Welding - Liberty	Elyria	Bolt, Nut, Screw, Rivet, and Washer Manufacturing 332722	LIKELY ACTIVE	7.3 KM
Duffin Mfg CO	Elyria	Machine Shops 332710	UNVERIFIED	9.1 KM
Ohio Screw Products, INC. (0247040393)	Elyria	Precision Turned Product Manufacturing 332721	ACTIVE	9.6 KM

Every listed plant in Lorain County

Also at this address

No other federal record shares this street address.

Where this record comes from

5 sources hold this plant, and 11 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 OSHA-OIS.

The company’s own websiteOPERATING
first seen JUL 2026 · last seen OCT 2026
SAM.gov entity registrationOPERATING
Record RXZVDKZDNTL1 · first seen DEC 2025 · last seen DEC 2025
DOL Form 5500 retirement plan filingsOPERATING
Record 341114689|OH|44052|3000 leavitt rd · first seen DEC 2024 · last seen DEC 2024
SBA Paycheck Protection Program loan recordsEXISTENCE
Record OH|lorain|3000 leavitt rd unit 1 · first seen MAR 2021 · last seen MAR 2021
EPA Facility Registry ServiceEXISTENCE
Record 110070334640 · first seen SEP 2018 · last seen SEP 2018

IN LORAIN COUNTY34 other plants share this one’s industry (Machine Shops; Turned Product; and Screw, Nut, and Bolt Manufacturing, NAICS 3327); 21 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: SENTINEL MANAGEMENT, INC. · JUL 2026 · ON THIS PAGE; SAM.gov: SENTINEL MANAGEMENT INC · DEC 2025 · ON THIS PAGE
Street addressSOURCES DISAGREE: EPA: 3000 LEAVITT ROAD · JUL 2026; SAM.gov: 3000 LEAVITT RD UNIT 1 · DEC 2025 · ON THIS PAGE
City: EPA: LORAIN · JUL 2026 · ON THIS PAGE; SAM.gov: LORAIN · DEC 2025 · ON THIS PAGE
State: EPA: OH · JUL 2026 · ON THIS PAGE; SAM.gov: OH · DEC 2025 · ON THIS PAGE
Coordinates: EPA: 41.44329,-82.20246 · JUL 2026
Employees (band): DOL: 20-99 · DEC 2024
Website: SAM.gov: http://www.semcocarbon.com · DEC 2025
CAGE code: SAM.gov: 6CAT1 · DEC 2025
Retirement plan filing (Form 5500): DOL: 36 active participants, plan year ending 2024-12-31, 1 plan(s) · DEC 2024
PPP loan: SBA PPP: PPP loan x2, approved 2021-03-24, 29 jobs reported · MAR 2021
SAM registration expires: SAM.gov: 2026-12-16 · DEC 2025

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