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Illinois

* Not an exhaustive list

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | V | W

Addison

Lawler

Addison

Pepsi Cola

Addison

Utility Electrical Supply

Alton

Air Reduction

Alton

Airco

Alton

Alton Box Board, APS

Alton

Alton High School

Alton

Alton Powerhouse

Alton

Alton-Wood River Power Plant

Alton

Ameren Alton Powerhouse

Alton

American Smelting

Alton

Canham Sheet Metal

Alton

Duncan Foundry

Alton

East Alton Power House

Alton

Equal Opportunities Builders

Alton

Federal Metallurgical

Alton

Gerald Walker Brick Contractor

Alton

Howards & Wells Appliance

Alton

Illinois Power Company

Alton

J J Wuellner & Son

Alton

Jafra Inc.

Alton

Jefferson Smurfit

Alton

Kern Construction Co., Inc.

Alton

Laclede Steel Mill

Alton

Ledbetter Erection Corp.

Alton

McCormick Construction

Alton

Moore Painting Co.

Alton

Owens-Illinois

Alton

Peavey Flour Mill

Alton

Pepsi-Cola

Alton

Piasa Motor Fuels

Alton

Sears Roebuck

Alton

Thompson Asphalt Co.

Alton

W Carman Trucking & Grading Co.

Alton

Walters Sheet Metal

Argo

GATX Corp.

Arlington Heights

AMG

Arlington Heights

B & H Industries

Arlington Heights

Pace-Suburban Bus Division RTA

Arlington Heights

Robal Co., Inc.

Arlington Heights

TP High School Dist 214

Arlington Heights

Trude Land Development Co.

Arlington Heights

Westgate Drugs, Inc.

Arsenal Island

Rock Island Arsenal

Aurora

Armour Dial

Aurora

Caterpillar

Aurora

Devan International, Inc.

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Baldwin

Baldwin Powerhouse

Baldwin

Illinois Power Company

Barrington

Quaker Oats Co.

Bartelso

S & K Masonry Company

Bartonville

Edwards Coal Burner

Bartonville

Keystone Steel & Wire

Bedford Park

3M Corp

Bedford Park

Johnson & Johnson

Belleville

Bauer Bros. Construction Co. Inc.

Belleville

Belleville Jr. College

Belleville

C R Vernier, Inc.

Belleville

Calhoun Construction, Inc.

Belleville

Charles Mahoney Co.

Belleville

Chrysler

Belleville

Dickerson Stations, Inc.

Belleville

Friendship Manor Health Center

Belleville

George Uhl Brick & Stone Contractor

Belleville

Gleeson Asphalt, Inc.

Belleville

Gray Iron Foundry

Belleville

Hoeffken Bros, Inc.

Belleville

Kenneth E Wild & Sons, Inc.

Belleville

Loren M Krause Construction Co., Inc.

Belleville

Mackatrina Bay, Inc.

Belleville

Mager Brick Contracting

Belleville

Mercer Excavating, Inc.

Belleville

Modern Asphalt Paving & Construction

Belleville

Roof Deck Construction & Supply Co.

Belleville

Rust Co., Corp.

Belleville

Service Oil Co., Inc.

Belleville

Sonnenberg Asphalt, Inc.

Belleville

St. Elizabeth's Hospital

Belleville

T&A Corporation

Belleville

TA Minor Construction Co.

Belvidere

Craft Manufacturing Co.

Beneville

Unit Stove & Furnace Co.

Benton

Best Masonry, Inc.

Birmingham

Dyer Electric Company, Inc.

Bloomington

Bloomington High School

Bloomington

Glass Specialty Co.

Breese

Rehkemper & Sons, Inc.

Broadview

Bulk Petroleum Corp.

Broadview

CNH America, LLC

Broadview

International Harvester

Byron

Byron Nuclear Power Plant

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Cahokia

Floyds Amoco Service Station

Cahokia

Pennocks Sunoco Service

Cairo

Cairo Power & Light Company

Cairo

Coca-Cola Bottling Co.

Cairo

G. R. Hornberger & Sons

Cairo

Illinois Lumber

Cairo

Interstate Fertilizer

Cairo

Interstate Mill & Storage

Cairo

Standard Oil Company

Cairo

Valley Steel Company

Campbell Hill

Endres Masonry Contractors, Inc.

Carbondale

Edgar Stephens & Sons

Carbondale

Labor Specialists, Inc.

Carbondale

M. Young & H. E. Windland

Carbondale

Pioneer Applications, Inc.

Carbondale

Wellers Plumbing and Heating

Carlinville

Blackburn College

Carlinville

Curry Ready Mix Building Supplies

Carlinville

H & H Construction Services and Management, Inc.

Carlinville

Monterey Coal Mine

Carlyle

Carlyle Masonry

Carlyle

Raymond Schaeffer

Carol Stream

Eaton Corporation

Carol Stream

Gaylord Container

Carol Stream

MicroEnergy, Inc.

Carole Stream

KCW Environmental

Carpentersville

Hamphshire High School

Carpentersville

Irving Crown High School

Carterville

Egyptian Masonry Company

Cary

True Value Paint

Caseyville

Munie Outdoor Services, Inc.

Caseyville

Vandalia Bus Lines, Inc.

Caseyville

Walsh Drywall Co.

Centralia

Carpenter Auto Repair

Centralia

Clean Control Corp.

Centralia

County of Marion School Dist 1

Centralia

Geo White

Centralia

H B Liquidating Company

Centralia

Hensco Enterprises, Inc.

Centralia

James C. Robertson Masonry

Centralia

James D. Beaver Masonry Contractor

Centralia

Kaskaskia Workshop, Inc.

Centralia

Kass Potato Chips

Centralia

Star Service & Petroleum Co.

Centralia

Superior Window Co.

Centralia

Triple S Construction Co.

Centralia

West Bus Co.

Centralia

Wimberly School Bus Service

Champaign

Champaign A & K Insulation Co.

Champaign

University of Illinois

Charleston

Dorsey O'Crail & Sons Contractors

Chicago

Casimir Swiss

Chicago

Abbott Labs

Chicago

ABC Rail Corporation

Chicago

Ace Insulation

Chicago

Acme Barrell Company

Chicago

Admiral Corp.

Chicago

Agar Meat/Blue Bird

Chicago

American Bridge

Chicago

ANC Container Company

Chicago

Arcole Midwest Corp.

Chicago

Arlington Heights High School

Chicago

Armour Company

Chicago

Arvey Corp.

Chicago

Associates Insulation Corporation

Chicago

Atchison Topeka & Santa Fe RR

Chicago

Becker Roofing Co.

Chicago

Bell & Howell Co.

Chicago

Bell South Telephone Co.

Chicago

Borg Warner Corp.

Chicago

Brach Candy

Chicago

Brach's Candy

Chicago

Campbell Soup Company

Chicago

Carter Family Corp.

Chicago

Ceco Corporation

Chicago

Central Steel and Wire Co.

Chicago

Century Supply

Chicago

Chevron Refinery

Chicago

Chicago Civic Center

Chicago

Chicago Down Draft Furnace Co.

Chicago

Chicago Rock Island Pacific RR

Chicago

Chicago Tribune

Chicago

Commonwealth Edison

Chicago

Consolidated Food Corp.

Chicago

Consolidated Metal Products Co.

Chicago

Continental Can

Chicago

Continental Glass Corp.

Chicago

Cover Girl, Inc.

Chicago

Crawford Station

Chicago

Crescent Insulations, Inc.

Chicago

Curtis Candy

Chicago

Darling's National Stockyard

Chicago

Dispath Oven Company

Chicago

District Security

Chicago

E. W. Olson Co.

Chicago

East Chicago Sheet & Tube

Chicago

Electrical Supply

Chicago

EMD/GM

Chicago

Exxon Mobil

Chicago

F.W. Means Company

Chicago

FAA

Chicago

Fargo MFG Co.

Chicago

Fisk Power Plant

Chicago

Foseco

Chicago

GATX Corp.

Chicago

General Electric

Chicago

General Motors

Chicago

Great Lakes Plumbing

Chicago

Gust K. Newberg Construction

Chicago

Hall Printing Co.

Chicago

Harold & Martin W Crane

Chicago

Henry Pratt Co.

Chicago

Higgins Street Garlic Press

Chicago

Highland Heating, Inc.

Chicago

Hopkins Machine

Chicago

Humphries Machine

Chicago

Hyatt Corporation

Chicago

ICRR

Chicago

Illinois Bell

Chicago

Inland Insulation Co.

Chicago

Interlake Iron

Chicago

Inter-Lake Steel

Chicago

International Harvester

Chicago

James McHugh Construction Co.

Chicago

Joes Bulko Service

Chicago

John Mohr & Sons

Chicago

Kentile Floors

Chicago

Kraft Foods

Chicago

Krug Excavating Co.

Chicago

Lanzit Corrugated Co.

Chicago

Martin Oil

Chicago

McDonnell Douglas

Chicago

Mehring & Hanson Wendt, Inc.

Chicago

Montgomery Ward & Co., Inc.

Chicago

National Railroad Passenger Co.

Chicago

National Van Lines

Chicago

National-Standard Insulation

Chicago

NCC Food Corp.

Chicago

Occidental Chemical

Chicago

O'Hare Airport

Chicago

Peoples Gas

Chicago

Phillips Getschow

Chicago

Pingro Corp/American Laboratory

Chicago

Pioneer Tool & Eng.

Chicago

Power Systems, Inc.

Chicago

Precision Metal Workers

Chicago

Pressed Steel Car Co.

Chicago

Pullman Standard Car MFG Co.

Chicago

Raytheon

Chicago

Reid Mechanical Contractors

Chicago

Republic Steel

Chicago

Republic Steel, Robert Taylor Home Powerhouse

Chicago

Reynolds Aluminum

Chicago

Richie Coal Co.

Chicago

Robert Zacharias Company

Chicago

Rush University Hospital

Chicago

Rush-Presbyterian/St. Lukes

Chicago

Rymer Foods, Inc.

Chicago

S & C Electric Company

Chicago

Santa Fe Railroad

Chicago

Saxon Paint Store

Chicago

Sea-Rich Corp.

Chicago

Sears Roebuck

Chicago

Sears Tower

Chicago

Sherwin-Williams

Chicago

Shriner's Hospital

Chicago

SLE, Inc.

Chicago

SOO Line R.R.

Chicago

Southern Steel

Chicago

St. Bernard Hospital

Chicago

Standard Asbestos Manufacturing Co.

Chicago

Standard Boiler & Tank Co.

Chicago

Sunbeam Appliance Service Co.

Chicago

Texaco Refinery

Chicago

The Liquid Carbonic Corp.

Chicago

Transco, Inc.

Chicago

Triangle Container Corp.

Chicago

United States Steel Corporation

Chicago

Union Oil

Chicago

Union Stock Yards

Chicago

Union Tank Car Co.

Chicago

United Parts Manufacturing

Chicago

Universal Power Piping

Chicago

University of Chicago

Chicago

United States Steel Corporation

Chicago

Utilities Engineering Institute

Chicago

VA Hospital

Chicago

Venus Industries, Inc.

Chicago

W E O'Neil Construction Co.

Chicago

Walter H Johnson Candy Co.

Chicago

Waste Management

Chicago

Weber Marketing Systems

Chicago

Williams Scotsman International

Chicago

Wisconsin Steel Works

Chicago

Workman for Work Men, Inc.

Chicago Heights

J-P Construction Co.

Chicago Heights

Owens-Illinois

Chicago Heights

School District 170

Chicago Heights

Stauffer Chemical

Chinatown

Fruia Coln Corp.

Cicero

Aldens Irving, Inc.

Cicero

E H O'Neill Floors Co.

Cicero

Western Electric

Clinton

Clinton Nuclear Power Plant

Clinton

Clinton Powerhouse

Coffeen

Ameren CIPS

Coffeen

Coffeen Powerhouse

Colcowda

Rieherdson Bros.

Collinsville

HMA Holdings Inc.

Collinsville

Thomas Bros.

Columbia

Eugene Luhr & Co.

Columbia

Laure Bros.

Columbia

Luhr Brothers

Columbia

Mazell Paint

Compton

Mayrath Co.

Cordova

3M

Cordova

Illinois Nitrogen

Cordova

Quad Cities Generating Station

Cottage Hills

Bethalto Tool & Die, Inc.

Creal Springs

Parker B C Company

Crystal

Farr Company

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Darien

Leeco Steel Products

Decatur

A F Krall Contraction Company

Decatur

A. E. Staleys

Decatur

ADM Countrymark, Inc.

Decatur

Archer Daniels Midland Co.

Decatur

Cargill, Inc.

Decatur

Caterpillar

Decatur

CNIC

Decatur

Firestone Tire & Rubber Co.

Decatur

Goodyear Tire & Rubber Company

Decatur

ICRR

Decatur

Milliken College

Decatur

Staley Starch

Deerfield

Baasch Dental Lab

Deerfield

Crane Fulview Glass Door Co.

Deerfield

Marvin Drug Company

Deerfield

Sara Lee

DeKalb

Caterpillar

DeKalb

DeKalb Commercial Body

DeKalb

General Electric

DeKalb

Satelitte Shelters, Inc.

DePue

New Jersey Zink

Des Plaines

Little Fuse, Inc.

Des Plaines

Procon, Inc.

Des Plains

Symons MFG Company

Dow, IL

Reher Implement

Downers Grove

Sara Lee

Downers Grove

Sears

DuPage County

H & O Interiors

Dupo

Union Pacific RR

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East Alton

Amoco Oil

East Alton

Beal Tool & Dye Company

East Alton

Kiln Gas

East Alton

Olin Corporation

East Alton

Olin Matheson-Winchester

East Alton

Siebolds Bakery

East Alton

Tri-Construction

East Alton

Western Cartridge Company

East Alton

Western Electric

East Chicago

General Mills

East Chicago

Inland Steel Powerhouse

East Chicago

Proctor & Gamble

East Chicago

Shell Oil Company

East Chicago

Sherwin-Williams

East Chicago

Sinclair Oil & Gas Co.

East Hazelcrest

M & O Insulation Co.

East Moline

Vicon Corporation

East Peoria

Caterpillar

East St. Louis

Aluminum Ore Plant

East St. Louis

Alvin G. Fields Plumbing

East St. Louis

American Zinc

East St. Louis

Atlas Track Construction Co.

East St. Louis

Arthur Fields Company

East St. Louis

Baker Coast

East St. Louis

Big River Zinc

East St. Louis

Bituminous Fuel & Oil Co.

East St. Louis

Chicago, MO & Western RR

East St. Louis

Citi Fuel Corporation

East St. Louis

Concrete Paving Co.

East St. Louis

Condo Brick Contractors Company

East St. Louis

Cooper Plant

East St. Louis

D C M, Inc.

East St. Louis

Dens 66 Service

East St. Louis

East Side Casting

East St. Louis

East St. Louis School District

East St. Louis

E J Maag

East St. Louis

Fine Homes, Inc.

East St. Louis

Fleming Fuel Oil

East St. Louis

Gateway Midstate Truck Plaza

East St. Louis

H H Hall Construction

East St. Louis

Hunter Packing

East St. Louis

Illinois Central Railroad

East St. Louis

Keeley & Sons Inc.

East St. Louis

Kelly Railroad Contractors

East St. Louis

Kingshighway Amoco

East St. Louis

Lewin Metals

East St. Louis

Moore Bros., Inc.

East St. Louis

Obernester Glass

East St. Louis

Pfizer

East St. Louis

Process Piping Co.

East St. Louis

Roxie Stanley Construction Co., Inc.

East St. Louis

Southern Illinois Construction Co.

East St. Louis

Southern Pacific Railroad

East St. Louis

St. Louis Flexicore, Inc.

East St. Louis

Steele Bailing

East St. Louis

Westerheide Sheet Metal

Edwardsville

Al Grebel

Edwardsville

C. F. Mindrup

Edwardsville

Floyd Spengel

Edwardsville

George Ostendorf

Edwardsville

Joe Koen

Edwardsville

Kienstra Concrete

Edwardsville

Larry Hale Remodel/Repair

Edwardsville

Lee Contracting Co.

Edwardsville

Mel Suhre

Edwardsville

Propellex-Ammunition Contractors

Edwardsville

R & M Construction, Inc.

Edwardsville

SIUE

Edwardsville

TA Century Concrete Co.

Edwardsville

Thiems Construction Co., Inc.

Edwardsville

Tom Allen Construction Company

Edwardsville

U.S. Radiator

Edwardsville

Warner Trucking

Effingham

Keith Beals Masonry

Eldorado

Tom McGowan & Company

Elk Grove

Doumak, Inc.

Elk Grove Village

Edwards Engineering

Elk Grove Village

Neptune Systems, Inc.

Eureka

Washington Equipment Co.

Evanston

North Counties Hydro Electric

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Fairmont City

American Zinc

Fairview Heights

R C Paving Co., Inc.

Farina

Roger K. Quick Masonry

Farmersville

Freeman Coal Mines

Flossmore

Armstrong Chemical

Frankfort

DSCO Insulations, Inc.

Franklin Park

ABC Trucking

Franklin Park

Hill Mechanical Corp.

Franklin Park

Nestle Foods Company

Franklin Park

U S Aluminum & Chemical Corp.

Freeburg

Williams Purdy Brick Contractors

Freeport

Newell Window Furnishings, Inc.

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Galesburg

Gates Rubber Plant

Geneva

Village Dry Cleaners

Gerard

Vermiculite Factory

Girard, IL

Taero Refractories

Glen Carbon

Ed Moore Construction

Glen Carbon

M & M Asphalt Co.

Glen Carbon

Rite Electric Co.

Glen Ellyn

Brenner Sheetmetal

Glen Ellyn

Brewer Sheet Metal

Glen Ellyn

Collage of DuPage

Glenview

Edwards Pole & Wire

Glenview

New Trier High School

Godfrey

F.E. Widman Construction

Godfrey

K J B Equipment, Inc.

Granite City

A & E Electronics Corp.

Granite City

A H Seebold Truck Service

Granite City

Air Products & Chemicals

Granite City

A. O. Smith

Granite City

American Steel

Granite City

AMSXO Mechanical, Inc.

Granite City

Army Depot

Granite City

Butler Floor Company

Granite City

C D Peters Construction

Granite City

Capri Sun

Granite City

Commonwealth Steel

Granite City

East Side Concrete, Inc.

Granite City

Ellsworth Concrete Co.

Granite City

Fox Industrial Warehouse

Granite City

G H Sternberg & Co.

Granite City

Gateway Drywall

Granite City

General Contracting Co.

Granite City

General Steel

Granite City

Geo A. Slay & Company

Granite City

George Grove Plumbing & Heat

Granite City

Glen Construction Co.

Granite City

Granite City Coke

Granite City

Granite City Press

Granite City

Granite City Steel

Granite City

Granite Sheetmetal

Granite City

Henry Ross Construction

Granite City

Holland Asphalt Paving Co.

Granite City

Icon Mechanical Construction

Granite City

Industrial Homes Corporation

Granite City

Jarco Construction Company, Inc.

Granite City

Kamadulski Excavating

Granite City

Kelly Hogan Plumbing Co.

Granite City

Kraft Foods

Granite City

L Wolf Co.

Granite City

Laclede Steel Mill

Granite City

Lamar Moore Construction

Granite City

Limbaugh Builder, Inc.

Granite City

Lybarger Construction

Granite City

M H Wolfe & Co.

Granite City

National Lead Plant

Granite City

Nestle Purina

Granite City

Owens Corning Asphalt Plant

Granite City

Paul Seebold Concrete Co.

Granite City

Pfizer

Granite City

Reds Truck Service

Granite City

Reilly Tar & Chemical Corp.

Granite City

Rite Electric Co.

Granite City

River Construction Corp.

Granite City

S M Wilson & Co.

Granite City

Skerle Building Material

Granite City

St. Elizabeth Medical Center

Granite City

St. Elizabeth's Hospital

Granite City

Stearns Concrete Contractor

Granite City

TA Nameoki Concrete Products

Granite City

Triangle Heating Co.

Granite City

Vest Excavating

Granite City/Madison

R Dron Electrical Co., Inc.

Greenville

Pet Milk Company

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Hartford

Chemetco

Hartford

Clark Oil

Hartford

Clark Oil Refinery

Hartford

International Shoe

Hartford

Premcor

Hartford

Sinclair Oil & Gas Co.

Hartford

Sinclair Refining Co.

Harvard

Arthur Lippe

Harvard

Butcher Boy Doors

Harvard

Gratz Construction Co.

Harvard

Roy Hunt Construction

Harvey

Aberdeen Insulation Co.

Havana

Atwood Foundry

Havana

Havana Generating Station

Havana

Havana Powerhouse

Hennepin

Hannepin Generating Station

Highland

Basler Electric Company

Highland

Chastines Healthcare

Highland

Dale Widman Construction Co.

Highland

Essenpreis Plumbing & Heating, LTD

Highland

Haldi Lumber & Construction Co.

Highland

Highland Builders

Highland

Jakel, Inc.

Highland

Korte & Luitjohan Contractors

Highland

Korte Plocher Construction Co.

Highland

Ralph Korte Construction Co., Inc.

Highland

Stocker Gravel & Construction Co.

Highland

Triple T Excavating

Highland Park

Hoyer Schlesinger Turner, Inc.

Hillsboro

Ball Brothers Glass

Hillsboro

Hillsboro Glass

Hinsdale

A & D Heating Corp.

Hoffman Estates

Sears Roebuck & Company

Hoyleton

Hoyleton Masonry Contractors, Inc.

Hutsonville

Hutsonville Powerhouse

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Ina

Rend Lake College

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Jacksonville

Anderson Clayton Foods

Jacksonville

Caldwell Engineering Co.

Jacksonville

Carnation Cream or Milk Plant

Jacksonville

Price Masonry Company

Joliet

American Cyanamid

Joliet

Amoco Oil

Joliet

Cargill, Inc.

Joliet

General Refractories

Joliet

Joliet Arsenal

Joliet

Joliet Power Plant

Joliet

Mobile Oil Refinery

Joliet

New Brunswick Building

Joliet

Olin Corporation

Joliet

Ralph M. Parsons Co.

Joliet

Sowers & Thompson Construction

Joliet

Universal Oil Co.

Joppa

Joppa Powerhouse

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Kankakee

General Insulation, Inc.

Kewanee

Mechanical Insulation Co., Inc.

Kincaid

Kincaid Powerhouse

Kinilworth

Macdonald Engineering

Kinkaid

Kinkaid Powerhouse

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LaGrange

Electromotive GM

Lake Forest

ABC-Naco, Inc.

Lake Forest

Brunswick Corp.

Lake Forest

Trustmark Insurance Co.

Lake Zurich

Dearborn Chemical

Lansing

Meccon Industries Inc.

Lansing

Piping Systems, Inc.

Lawrenceville

Texaco, Inc.

Lawrenceville

Texaco Refinery

Lebanon

Christ Bros. Asphalt, Inc.

Lemont

Union Oil

Lenzburg

M L Vasquex, Inc.

Lincoln

Stetson China Company

Lincolnshire

Saputo Cheese USA

Lincolnwood

Bell & Howell Co.

Litchfield

Bandy Construction Company

Litchfield

County Tool & Die

Litchfield

W. R. Grace & Co.

Livingston

New York Central Railroad

Lockport

Pure Oil Co.

Lockport

Texaco, Inc.

Lombard

JRG Trucking

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Madison

American Car

Madison

Commonwealth Foundries

Madison

Consolidated Aluminum

Madison

Dow Chemical Company

Madison

DWC Materials Handling

Madison

Howard Steele Construction, Inc.

Madison

Johns-Manville Plant

Madison

Standard Insulations, Inc.

Madison

TA Industrial Cons & Engineering Co.

Madison

W L Waggoner Trucking Co.

Madison

W Waggoner Excavating & Trucking Co.

Mansfield

Mansfield High School

Marion

F E Holmes & Sons Construction

Mascoutah

Kilian Corporation

Mattoon

Leo R. Hart & RL Reilly Contractors

Mattoon

O'Connor Bills

Maywood

Commonwealth Edison

McCook

Armour Company

McCook

Meade Electric

McCook

Reynolds Metals

McCook

Witco Chemical

Melrose Park

Anson Industries, Inc.

Melrose Park

International Harvester

Melrose Park

Mississippi Valley Steel

Melrose Park

Navistar

Meredosia

Meredosia Powerhouse

Milford

Alfred Dahlquist Sons

Millstadt

George Weis Company

Millstadt

Stran Contracting, Inc.

Millstadt

Wrubel Construction Co.

Moline

Henry Engineering Co., Inc.

Moline

Taylor Insulation

Morris

General Electric Co.

Morton

Caterpillar

Morton

Iron-A-Way

Morton

Star Transport, Inc.

Morton Grove

Paul J. Krez

Mount Vernon

Precision National Corp.

Mount Vernon

Vedal Pipe Line Construction Co.

Mount Vernon

World Color Press

Mt. Carmel

D.W. Construction

Mt. Carmel

Leeds Engineering Co.

Mt. Carmel

Mt. Carmel Lumber

Mt. Carmel

Mt. Carmel Sand & Gravel

Mt. Vernon

Brown, Manthi, Davis & Mullain

Mt. Vernon

Eater Sheet Metal

Mt. Vernon

General Tire

Mt. Vernon

Mt. Vernon Neon Sign Company

Mt. Vernon

Strong Construction Company

Mt. Zion

Pittsburgh Plate Glass

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Naperville

Amoco Oil

Naperville

Amoco Research Labs

Naperville

GNH Electrical Supply

Naperville

RJR Nabisco

Newton

Newton Powerhouse

Niles

Ohmite MFG. Co.

Niles

Quality Woodworking Co., Inc.

Niles

Vapor Corp.

Normal

Illinois State University

North Chicago

Abbott Laboratories

North Chicago

American Can Co.

Northfield

Volkswagen

Northlake

International Paper

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O Fallon

Reese Construction Co.

Oak Brook

Brand Industrial Services

Oak Brook

CBI NA-CON, Inc.

Oak Brook

Chicago Bridge & Iron

Oak Brook

Citation

Oak Brook

Rust International, Inc.

Oak Lawn

Christ Hospital

Oak Park

A & M Insulation Co.

Odin

Farthing Machine Co.

O'Fallon

Boatman Construction

Ottawa

Ottawa Regional Hospital & Healthcare Center

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Pearl

Pearl Powerhouse

Pekin

Commonwealth Edison

Pekin

Pekin Paperboard

Pekin

Powerton Powerhouse

Peoria

ADM

Peoria

American Standard

Peoria

Caterpillar

Peoria

Chicago Bridge & Iron

Peoria

Dresser Industries

Peoria

Faber Industries

Peoria

Illinois Central

Peoria

Peoria Manpower

Peoria

Sprinkmann & Sons

Peoria

Westinghouse Airbrake Co.

Plainfield

Chicago Bridge & Iron Co.

Pocahontas

James L Goestenkors

Pocahontas

V & G Contracting, Inc.

Princeton

Dave Fander Construction

Princeton

Davis Piper Lumber Co.

Princeton

Lyle Wolf Construction

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Quincy

Heidbreder-Peters Co.

Quincy

Q Car Care Center

Quincy

Rupp Kinney Masonry Construction

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River Forest

Concordia University

River Forest

Thomas McQueen Co.

River Grove

ExxonMobil Oil Corp.

River Grove

North Point Standard

Riverside

Riverside-Brookfield High School

Robinson

Marathon Oil

Rochelle

Municipal Power Plant

Rockdale

Rockdale Refinery

Rockford

Amerock Corporation

Rockford

Gunite Foundry

Rockford

Ingersol-Rand

Rockford

Kaney Transportation, Inc.

Rockford

Nasco

Rockford

Solem Machine Company

Rockford

Stahly Cartage Co.

Rockford

Sundstrand Aviation

Rockford

Zenith Cutter Company

Rolling Meadows

Kelso-Burnett Electric Co.

Romeoville

Texaco Refinery

Romeville

ComEd Powerhouse

Roodhouse

Illinois Central Railroad

Roxana

House Shell Service

Roxana

Shell Oil Company

Roxana

Spicer Garage

Ruma

Illinois Excavators, Inc.

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Salem

County of Marion School District

Salem

Koellings Electric Service

Salem

Radiac Abrasives East, Inc.

Salem

World Color Press, Inc.

Sauget

Amax Zinc

Sauget

Big River Zinc

Sauget

Cerro

Sauget

Cerro Copper

Sauget

Ethyl Corporation

Sauget

Mobil

Sauget

Monsanto Company

Sauget

TPC Industrial Services

Savanna

Savanna Army Depot

Schaumburg

Motorola Inc.

Schiller Park

JSG Electrical

Schiller Park

Ristorante Pasta Vino, Inc.

Shawneetown

Peabody Coal

Silvas

Chicago Rock Island Pacific RR

Skokie

AT&T

Skokie

Monsanto Company

Skokie

Rand McNally

South Roxana

Barton Contractors, Inc.

Springfield

Allis Chalmers

Springfield

Alton & Company, Inc.

Springfield

Calhoun County Contracting Corp.

Springfield

Dahlman Power Station

Springfield

Eisenhower Grade School

Springfield

Evans Construction Company

Springfield

Fenster Dairy

Springfield

Fiat Allis

Springfield

Grant Grade School

Springfield

Sacred-Heart Griffin High School

Springfield

City Water Light & Power

Springfield

Pillsbury

Springfield

Robert Pulliam Mason Contractor

Springfield

Sangamon Electric

Springfield

Springfield Powerhouse

St. Charles

Owens-Illinois

St. Peters

Opfer Masonry Company

Staunton

Staunton Ice & Fuel Co.

Staunton

Tomcal Contracting, Inc.

Streator

Designer Metal Products, Inc.

Summit

CPC International Corn Products

Sycamore

Sycamore Hospital

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Taylorville

Allied Mills

Tilton

General Motors

Tremont

River City Construction Co.

Tulsa

Insulation Service, Inc.

Tuscola

Cabot Corporation

Tuscola

Charles L. Clay Company

Tuscola

Petro Chemical Co.

Tuscola

Petro Chemical Plant

Tuscola

Tuscola Chemical Plant

Tuscola

USI Chemical Company

Venice

Celotex Corporation

Venice

Venice Powerhouse

Venice, IL

Venice Public School System

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Warrenville

BP Products North America

Warrenville

International Truck and Engine

Washington Park

Emerson Electric

Waterloo

Hanks Exec & Landscaping

Waukegan

Illinois Bell Telephone

Waukegan

Johns-Manville

Waukegan

Lordahl Engineers

Waukegan

Man Power, Inc.

Waukegan

Midwest Tire Auto Stores, Inc.

Waukegan

Waukegan School District 119

Waukesha

Amron Corp.

Waerly

Whalen Trucking

Westchester

Brand Insulation, Inc.

Wheeling

Chicago Molded Products

Willow Springs

Argonne Labs Powerhouse

Wilmette

Illinois Bell Telephone Co.

Wilsonville

Delaurent Construction Co.

Wood River

Standard Oil Company

Wood River

Amoco Oil

Wood River

Cam Construction, LTD

Wood River

Clark Oil

Wood River

Clark Refinery

Wood River

Conoco Philips Refinery

Wood River

Elk Sheet Metal

Wood River

Hartford Refinery

Wood River

Helmkamp Construction Co.

Wood River

Seibold's Bakery

Wood River

Olin Corporation

Wood River

R C S Construction, Inc.

Wood River

Shell Oil Company

Wood River

Standard Oil Refinery

Wood River

Wood River Powerhouse

Woodstock

Hayden-Illinois Ltd.

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