Ohio

Akron

B.F. Goodrich Co.

Akron

Goodyear Tire & Rubber Company

Barberton

Babcock & Wilcox

Bellevue

Seven Limers

Belpre

Shell Chemical Co.

Bryan

Bryan Bottling Co., Inc.

Canton

Ashland Refinery

Canton

Valley Systems, Inc.

Centerville

Centerville High School

Cincinnati

Brighton Automotive Warehouse

Cincinnati

C & I Girdler Construction Co.

Cincinnati

Clopay Corp.

Cincinnati

Ellis Engine

Cincinnati

Fairmont Food Company

Cincinnati

General Electric Aircraft

Cincinnati

Kroger Co.

Cincinnati

Master Pattern Foundry

Cincinnati

Napolean Steel Contractors

Cincinnati

Philip Carey Corporation

Cleveland

Aeroquip-Vickers, Inc.

Cleveland

American Greetings Corp.

Cleveland

Austin Company

Cleveland

Bailey Meter Company

Cleveland

Bowman Transportation

Cleveland

Chevrolet Motors

Cleveland

Cleveland Cliffs Iron Co.

Cleveland

Cleveland Drywall

Cleveland

Cleveland State Hospital

Cleveland

Colston Optical of MD

Cleveland

Eaton Corporation

Cleveland

Gulf States Steel Co.

Cleveland

Intrusion Prepakt, Inc.

Cleveland

Key Gas Components, Inc.

Cleveland

Lamson & Sessions Co.

Cleveland

LTV Steel Company, Inc.

Cleveland

Nashville Bridge Co.

Cleveland

Newman Pontiac

Cleveland

O & D Drywall

Cleveland

Standard Oil Company

Cleveland

The Johnston & Jennings Co.

Cleveland

Toledo Overseas Terminals Co.

Cleveland

Truline Aluminum Casting Co.

Columbus

Creith Lumber Co.

Columbus

Croson Plumbing & Heating

Columbus

Doctors Hospital

Columbus

Grimes Aerospace

Columbus

Harrop Industries

Columbus

Hexion Specialty Chemicals, Inc.

Columbus

Lennox Furnace

Columbus

North American Aviation

Columbus

Orchard Corporation of America

Columbus

Pennsylvania Railroad

Columbus

Sears

Columbus

Shoe Corporation of America

Conneaut

Norfolk & Western Railroad

Custar

Custar Elevator

Dashler

Kopperhofer Bros.

Dayton

Dayton Press Co.

Dayton

E F Macdonald Stamp Company

Dayton

General Motors

Dayton

Mead Corporation

Dayton

MW Cudtom Paper, Inc.

Dayton

Sears

Dayton

Simonds, Warden, White Co.

Defiance

General Motors

Deshler

Deshler Farmers Elevator Co.

Dublin

J A Guy, Inc. Mechanical Contractors

Eastlake

Gould Electronics, Inc.

Eastlake

Phil-Matic Screw Products, Inc.

Elmore

Brush-Wellman

Elyria

Concrete Masonry Corporation

Elyria

Jack Cornell Roofing

Euclid

Euclid Janitorial

Euclid

Murnick Manufacturing Company

Fairborn

S.E. Ohio Portland Cement Plant

Fairport

Uniroyal, Inc./Niagratuck Chem.

Findlay

Marathon Oil

Fostoria

Atlas Crankshaft

Fostoria

Fostoria Foundry

Fremont

Sabroske Electric, Inc.

Gallipolis

Gavin Powerhouse

Genoa

Process Development Co.

Genoa

Race Electric, Inc.

Genoa

The Powers Lumber & Supply Co.

Greenville

Owens Corning

Greenville

Schrader's Retread, Inc.

Greenwich

Fishbough Construction

Haverhill

USS Chemical

Jacksonville

Eastern Mechanical Corp.

Kingston

Shockley Mechanical & Manufacturing Co., Inc.

Lancaster

Anchor Hocking Glass Co.

Lancaster

Diamond Power

Lorain

Lake Erie Electric Co.

Manchester

JM Stuart Station

Marietta

Shell Chemical Co.

Marion

Quaker Oats

Maumee

Bartley Co.

Maumee

Hickory Farms, Inc.

Maumee

Surface Combustion, Inc.

Mento

Nunamaker Drywall & Insulation

Mentor

TCC Consultants, Inc.

Middletown

AK Steel Corporation

Middletown

Armco Drainage

Middletown

Armco Steel

Millbury

Permaglass, Inc.

Minerva

TRW Inc. Metals Division

Monroe

Dayton Technologies, Inc.

Napoleon

Campbell Soup Company

Navarre

Alfred Nickles Bakery, Inc.

New Lexington

Sunnyhill Coal Company

Newark

Varo Engineering, Ltd.

Northood

Auto Tronic Control Co.

Norwalk

Mayflower Vehicle Systems

Painesville

Naugatuck Chemical

Painesville

Rockefeller Drywall

Piketon

Goodyear Atomic

Rossford

Ross Ford Ordnance Depot

Sidney

Alcoa Home Exteriors, Inc.

Sidney

Copeland Corporation

Springfield

F H Hill Co., Inc.

Strongsville

American Fence Association, Inc.

Sylvania

Colgan Properties, Inc.

Sylvania

Sylvania City Schools

Tallmadge

Keller-Hall, Inc.

Tiffin

Danielak Electric, Inc.

Tiffin

ITT Abrasive Products Company

Toledo

A S Castenger Painting & Decorating Co.

Toledo

Allied Chemical

Toledo

American Flint Glass Union

Toledo

American Ship Building Co.

Toledo

Craig Electric Co.

Toledo

Dohler Die Casting Company

Toledo

Eggleston & Son Electrical Contractors, Inc.

Toledo

Electric Auto Lite Co.

Toledo

Federal Mogul Ignition Co.

Toledo

General Mills

Toledo

Gulf Oil Refinery

Toledo

Lamb Communications, Inc.

Toledo

Libby Owens Ford

Toledo

New Mather Metals, Inc.

Toledo

Norglass, Inc.

Toledo

Ohio Pipe Trades, Inc.

Toledo

Owens Corning

Toledo

Patneau Chevy Company

Toledo

Roger Nut Products Co.

Toledo

Roy's Trenching Service

Toledo

St. Vincent Mercy Medical Ctr.

Toledo

Standard Oil Company

Toledo

Standard Oil Refinery

Toledo

Sun Oil

Toledo

Sunoco, Inc.

Toledo

Sunoco Oil Refinery

Toledo

TA Boughey Painting & Decorating

Toledo

Toledo Engineering Co.

Toledo

Toledo Powerhouse

Toledo

Toledo Sanitary Dairy Products Inc.

Toledo

Toledo Shipbuilding Co., Inc.

Toledo

U.S. Reduction

Troy

Hobart Corporation

Warren

American Welding

Warren

Packard Electric

Waterville

CitiGroup, Inc.

Waterville

Johns Manville

Williduby

Rons Drywall

Willoughby

Ohio Rubber

Worthington

General Electric Super Abrasive

Worthington

O'Brien Mechanical Contractors, Inc.

Youngstown

GM

Youngstown

Roofing & Sheet Metal, Inc.

Youngstown

Sigmier Little

Youngstown

Youngstown Sheet & Tube

Zanesville

Mosaic Tile