| AC Compressor | Appleton, WI |
| Affiliated Engineers, Inc. | Madison, WI |
| Alfred Benesch & Company | Chicago, IL; Kenosha, WI |
| Allen Bradley Company | Richland Center, WI |
| Alliance Laundry Systems | Ripon, WI |
| Alliant Techsystems | Janesville, WI |
| Alliant Techsystems-Accudyne Corporation | Janesville, WI |
| Alliant Energy | Cedar Rapids, IA |
| Alliant Utilities | Madison, WI |
| Amana Appliances | Amana, IA |
| American Engineering Testing, Inc. | St. Paul, MN |
| American Engineering Testing, Inc. | Schoefield, WI |
| American Materials, Inc. | Eau Claire, WI |
| American Roller Company | Union Grove, WI |
| Amerock Corporation | Rockford, IL |
| Ametek/Lamb Electric Division | Racine, WI |
| Amsco Fabricated Products | Rice Lake, WI |
| Amsted Industries | Chicago, IL |
| Amtec Corporation | Janesville, WI |
| Anderson Corporation | Bayport, MN |
| Ansul, Inc. | Marinette, WI |
| Applied Technologies | Lake Villa, IL |
| Apogee Wausau Group Wausau Metals | Wausau, WI |
| Appleton Papers, Inc. | Combined Locks, WI |
| Applied Microtechnology, Inc. | Platteville, WI |
| Argonne National Laboratory | Argonne, IL |
| Ashley Furniture | Arcadia, WI |
| ASI Technologies | Milwaukee, WI |
| AY Macdonald Manufacturing Company | Dubuque, IA |
| Ayres Associates | Eau Claire, WI |
| Barber Colman | Loves Park, IL |
| Barnstead Thermolyne | Dubuque, IA |
| Barr Engineering Company | Minneapolis, MN |
| RH Batterman and Company, Inc. | Beloit, WI |
| Bemis Machinery Company | Sheboygan Falls, WI |
| Benchmark Electronics, Inc. | Winona, MN |
| Bemis Flexible Packaging-Curwood | Oshkosh, WI |
| Bentonite Performance Minerals | Belle Fourche, SD |
| Besley Products Corporation | South Beloit, IL |
| Bethlehem Steel | Chesterton, IN |
| Black & Decker | Beloit, WI |
| Blain Supply, Inc. | Janesville, WI |
| Bonestroo & Associates, Inc. | Mequon, WI |
| Borg Indak, Inc. | Delvevan, WI |
| Braun Intertec Corporation | Minneapolis, MN |
| Briggs and Stratton Corporation | Wauwatosa, WI |
| Brunk Industries, Inc. | Lake Geneva, WI |
| BRW, Inc. | Milwaukee, WI |
| Bucyrus International, Inc. | South Milwaukee, WI |
| Bukacek Construction, Inc. | Racine, WI |
| Bushman Equipment, Inc. | Butler, WI |
| Cabela's Distribution Center | Prairie Du Chien, WI |
| Camcar/Techtron | Rockford, IL |
| Cardinal FG | Portage, WI |
| Carnes Company | Verona, WI |
| Carroll Electric | Beloit, WI |
| Plant Metallurgist | Racine, WI |
| Caterpillar | Peoria, IL |
| Cedar Corporation | Menomonie, WI |
| CESO Inc. | Dayton, OH |
| CGC Inc. | Madison, WI |
| CG Schmidt, Inc. | Green Bay, WI |
| Cherry Corporation | Wakegan, IL |
| Chicago Bridge & Iron Company | Plainfield, IL |
| Chicago Dubuque Foundry | Freeport, IL |
| Chippewa County Land Conservation Department | Chippewa Falls, WI |
| Chippewa County Highway Department | Chippewa Falls, WI |
| Chiquita Processed Foods LLC | Fall River, WI |
| Chrysler Corporation | Belvidere, IL |
| City of Appleton | Appleton, WI |
| City of Ashland | Ashland, WI |
| City of Beloit | Beloit, WI |
| City of Bettendorf | Bettendorf, IA |
| City of De Pere | Depere, WI |
| City of Dubuque | Dubuque, IA |
| City of Eau Claire | Eau Claire, WI |
| City of Elkhorn | Elkhorn, WI |
| City of Fennimore | Fennimore, WI |
| City of Marshifield | Marshfield, WI |
| City of Menasha | Menasha, WE |
| City of Milwaukee | Milwaukee, WI |
| City of Onalaska | Onalaska, WI |
| City of Oshkosh | Oshkosh, WI |
| City of Ripon | Ripon, WI |
| City of River Falls | Ashland, WI |
| City of Rock Island | Rock Island, IL |
| City of Rochester Department Public Works | Rochester, MN |
| City of Stevens Point | Stevens Point, WI |
| City of Sun Prairie | Sun Prairie, WI |
| City of Wisconsin Dells | Wisconsin Dells, WI |
| Colman Motor Products | Darlington, WI |
| Coltec Industries | Beloit, WI |
| Columbia Par Car | Reedsburg, WI |
| Community Engineering Consultants, Inc. | Green Bay, WI |
| Contestoga Rovers & Associates | Chicago, IL |
| Construction Cost Systems, Inc. | Lombard, IL |
| Consul-Tech Engineering | Orange Park, FL |
| Cooper Environmental & Engineering Resources | West Bend, WI |
| Cooper Power Systems | Waukesha, WI |
| Cooper Power Systems | Waukesha, WI |
| Crafted Plastics, Inc. | Sheboygan, WI |
| CPR Engineering | De Pere, WI |
| Crispell-Snyder, Inc. | Lake Geneva, WI |
| J P Cullen & Sons, Inc. | Janesville, WI |
| Cutler Hammer Division of Eaton Corporation | Milwaukee, WI |
| Dairyland Power Cooperative | La Crosse, WI |
| Dane County Highway Department | Madison, WI |
| Datex-Ohmeda | Madison, WI |
| Dayco Eastman | Manitowoc, WI |
| Dean Foods Vegetable Company | Fairwater, WI |
| Dean Foods Vegetable Company | Green Bay, WI |
| Earth Tech, Inc. | Milwaukee, WI |
| John Deere Dubuque Works | Dubuque, IA |
| Deere & Company | Moline, IL |
| Del Monte Corporation | Plover, WI |
| Delphi Delco Electronics | Oak Creek, WI |
| Department of Public Works | La Crosse, WI |
| Dickten and Masch Manufacturing Company | Nashotah, WI |
| DIGI Star | Fort Atkinson, WI |
| Donaldson Company, Inc. | Minneapolis, MN |
| Donaldson Company, Inc. | Stevens Point, WI |
| Dorgan Associates, Inc. | Madison, WI |
| Doskocil Food Service Company | Jefferson, WI |
| DURA Automotive | Stockton, IL |
| Durrant | Dubuque, IA |
| Eagle Window & Door, Inc. | Dubuque, IA |
| ECM Motor Company | Elkhorn, WI |
| E & V Consultants & Construction Managers | Minneapolis, MN |
| Eagle Point Software | Dubuque, IA |
| ECG Inc. | Altoona, WI |
| Elkay Manufacturing | Lanark, IL |
| EMCS Design Group | Milwaukee, WI |
| Emerson Electric Company | Menominee, MI |
| Emerson Motor Company | Sturgeon Bay, WI |
| ERTL Company Inc. | Dyersville, IA |
| Exide Battery Corporation | Manchester, IA |
| Farnam Mellor Sealing Systems | Necedah, WI |
| Farnsworth Group Inc. | Madison, WI |
| Fehr-Graham & Association | Freeport, IL |
| Fermi National Accelerator Laboratory | Batavia, IL |
| FIGI's | Marshfield, WI |
| Fischer Environmental Inc. | Ripon, WI |
| Flambeau Micro Division | Sun Prairie, WI |
| Flambeau Plastics | Baraboo, WI |
| Flexsteel Industries Inc. | Dubuque, IA |
| Foth & Van Dyke | Green Bay, WIM. |
| Freedom Plastics Inc. | Janesville, WI |
| Friday Canning Corporation | Fall River, WI |
| FWD Corporation | Clintonville, WI |
| Gannett Fleming Inc. | Madison, WI |
| Generac Power Systems Inc. | Waukesha, WI |
| General Electric | Burlington, IA |
| General Engineering Company Inc. | Portage, WI |
| General Kinematics | Barrington, IL |
| General Motors Corporation | Janesville, WI |
| General Thermodynamics | Franklin, WI |
| Geneva Lakes Cold Storage Inc. | Darien, WI |
| Georgia Pacific | Green Bay, WI |
| Geotest | West Allis, WI |
| Gerber Products | Reedsburg, WI |
| Giddings & Lewis Automation Technology | Fond Du Lac, WI |
| Gilbane Building Company | Chicago, IL |
| Gilman | Janesville, WI |
| Gilbert Southern Corporation | Peachtree City, GA |
| Giles Engineering Associates Inc. | Madison, WI |
| Giles Engineering Associates Inc. | Waukesha, WI |
| Glenbard Wastewater Authority | Glen Ellyn, IL |
| Glen Oak Lumber & Milling Inc. | Montello, WI |
| GME Consultants Inc. | Minneapolis, MN |
| Gold 'N Plump Poultry | Arcadia, WI |
| Gorman Surveying Inc. | Minneapolis, MN |
| Grant-Lafayette Electric Cooperative | Lancaster, WI |
| Grede Foundries Inc. | Reedsburg, WI |
| Greenheck Fan Corporation | Schofield, WI |
| Hamilton Sunstrand | Rockford, IL |
| The Hammerblow Corporation | Wausau, WI |
| Hardy Geo Tech Inc. | Omro, WI |
| Harley Davidson Motor Company | Franklin, WI |
| Hartley Controls Corporation | Neenah, WI |
| Harza Engineering Company | Milwaukee, WI |
| Henneman Jaspal Engineering Services Inc. | Madison, WI |
| Hillshire Farm & Kahns | New London, WI |
| HNTB Corporation | Milwaukee, WI |
| Hoffmaster Company | Oshkosh, WI |
| Honda | Raymond, OH |
| Honeywell Microswitch Division | Freeport, IL |
| Hormel Foods Corporation | Austin, MN |
| Howard R Green Company | Cedar Rapids, IA |
| Hufcor Inc. | Janesville, WI |
| Huffy Sports | Sussex, WI |
| Hunzinger Construction | Brookfield, WI |
| Husco International | Waukesha, WI |
| Hutchinson Technology | Hutchinson, MN |
| IIW Engineers & Surveyors | Dubuque, IA |
| Illinois DOT District 2 | Dixon, IL |
| Illinois DOT District 3 | Ottawa, IL |
| IMC Nitrogen Company | East Dubuque, IL |
| IMI Norgren | Rockford, IL |
| IMS Infrastructure Management Services Inc. | Arlington Heights, IL |
| Industrial Coils Inc. | Baraboo, WI |
| Intel Corporation | Rio Rancho, NM |
| Interactive Technologies Inc. | North Saint Paul, MN |
| Intermet Corporation | Sturtevant, WI |
| Exopack LLC | Tomah, WI |
| Interstate Power Company | Dubuque, IA |
| Iowa DOT ENgineering Division | Ames, IA |
| JF Ahern Company | Fond Du Lac, WI |
| Jacobs Engineering | De Pere, WI |
| Jacobsen Textron | Racine, WI |
| Jahnke & Jahnke Associates Inc. | Waukesha, WI |
| Jewell & Associates, Inc. | Spring Green, WI |
| John Sexton Contractors Company | Hillside, IL |
| Kankakee County Highway Department | Kankakee, IL |
| Kelch Corporation | Cedarburg, WI |
| KTE Consultants | Brookfield, WI |
| Kewaunee Nuclear Plant | Kewaunee, WI |
| Kiewit Construction Group | Phoenix, AZ |
| Kimberly Clark Corporation | Neenah, WI |
| KL Engineering Inc. | Madison, WI |
| Koch Materials Company | Dubuque, IA |
| Kohler Company | Kohler, WI |
| Kolbe & Kolbe Millwork Company Inc. | Wausau, WI |
| Edward Kraemer and Sons Inc. | Plain, WI |
| Krueger International | Bonduel, WI |
| Krueger International | Green Bay, WI |
| Krueger International | Manitowoc, WI |
| Landmark Engineering Group Inc. | East Moline, IL |
| Lands End Inc. | Dodgeville, WI |
| Laser Machining Inc. | Somerset, WI |
| Laser Master Corporation | Eden Prairie, MN |
| LASX Industries | White Bear Lake, MN |
| Leach Company | Oshkosh, WI |
| Lehman Company & Associates | Glen Ellyn, IL |
| Little Rapids Corporation | Green Bay, WI |
| Little Rapids Corporation | Shawano, WI |
| Arnold Lundgren and Associates PC | Rockford, IL |
| Michael J Losik & Associates | Brookfield, WI |
| Lowe Manufacturing Company Inc. | Readstown, WI |
| Madison Gas & Electric Company | Madison, WI |
| Manitowoc Cranes, Inc. | Manitowoc, WI |
| Maquoketa Valley Electric Cooperative | Amosa, IA |
| Marquip LLC | Phillips, WI |
| Maxim Technologies Inc. | Wausau, WI |
| Mayville Engineering Company | Mayville, WI |
| McMahon Associates Inc. | Neenah, WI |
| Mead Paper Company | Excanaba, MI |
| H.R. Recruiting | Fond Du Lac, WI |
| Metro Design Associates Inc. | Schaumburg, IL |
| Metropolitan Water Reclamation District | Chicago, IL |
| Micron Technology | San Jose, CA |
| Mid-State Contracting, Inc. | Wausau, WI |
| Midwest Engineering Services | Waukesha, WI |
| Miller Brewing Company | Milwaukee, WI |
| Miller Electric Manufacturing Company | Appleton, WI |
| Milwaukee Ductile Iron Inc. | West Allis, WI |
| Milwaukee Electric Tool Corporation | Brookfield, WI |
| Miniature Precision Components Inc. | Walworth, WI |
| Minergy Neenah LLC | Neenah, WI |
| Minnesota Power | Duluth, MN |
| Mirro Corporation | Manitowoc, WI |
| Modine Manufacturing Company | McHenry, IL |
| Modine Manufacturing Company | Racine, WI |
| Monona Wire Corporation | Monona, IA |
| Motorola Inc. | North Brook, IL |
| MPC Inc. | Walworth, WI |
| MPI Wisconsin Machining | Lake Mills, WI |
| MSA Professional Services | Baraboo, WI |
| Nercon Engineering | Oshkosh, WI |
| Nestle USA Nutrition Division | Eau Claire, WI |
| Noran Instruments | Middleton, WI |
| Nord Gear Corporation | Waunakee, WI |
| Northern Hardwoods A Mead Company | South Range, MI |
| Northern States Power Company | Eau Claire, WI |
| Northland Stainless Inc. | Tomahawk, WI |
| Northwest Enterprises | Eau Claire, WI |
| NTN Bower Corporation | Macomb, IL |
| OMNI Associates | Appleton, WI |
| OMNI Glass & Paint Inc. | Oshkosh, WI |
| Oscar J Boldt Construction Company | Appleton, WI |
| Oscar Mayer Foods Corporation | Madison, WI |
| Oshkosh Truck Corporation | Oshkosh, WI |
| Pace Industries | Reedsburg, WI |
| Pacific Scientific | Rockford, IL |
| Packaging Corporation of America | Tomahawk, WI |
| Packard Instrument Company, Inc. | Downers Grove, IL |
| Paragon Associates Inc. | La Crosse, WI |
| Passe Engineering | Spring Lake Park, MN |
| Pearson Engineering | Madison, WI |
| Pella Corporation | Pella, IA |
| Pella Corporation | Carroll, IA |
| Pella Corporation | Sioux Center, IA |
| Penda Corporation | Portage, WI |
| Phonak Inc. | Warrenville, IL |
| Pieper Electric Inc. | Milwaukee, WI |
| Placon Corporation | Madison, WI |
| Plastic Ingenuity Inc. | Cross Plains, WI |
| Plexus-Technology Group, Inc. | Neenah, WI |
| Polaris Industries | Osceola, WI |
| Portland Cement Association | Skokie, IL |
| Polyfab Corporation | Sheboygan, WI |
| Power Packer Inc. | Westfield, WI |
| Potlatch Corporation | Cloquet, MN |
| Power Packer | Westfield, WI |
| Powers Lake Construction Company Inc. | Twin Lakes, WI |
| Precision Drive and Control, Inc. | Monroe, WI |
| Prent Corporation | Janesville, WI |
| Pressed Steel Tank | West Allis, WI |
| Presto Products Company | Appleton, WI |
| Proud Excavating Inc. | Chippewa Falls, WI |
| Pyramid Companies | Rockford, IL |
| R A Smith and Associates | Brookfield, WI |
| Ramaker & Associates Inc. | Sauk City, WI |
| Ray O Vac | Fennimore, WI |
| Read Excavating Company Inc. | Gilberts, IL |
| REI | Wausau, WI |
| Research Products Corporation | Madison, WI |
| RES Manufacturing Company | Milwaukee, WI |
| RFC Engineering Inc. | Ham Lake, MN |
| Richland Center Foundry | Richland Center, WI |
| RITE HITE | Dubuque, IA |
| Riverland Energy Cooperative | Arcadia, WI |
| River Valley Testing Corporation | Appleton, WI |
| River Valley Testing Corporation | Wausau, WI |
| RMT Inc. | Madison, WI |
| City of Rochester | Rocheter, MN |
| Rockford Products Corporation | Rockford, IL |
| Rockwell Automation Allen Bradley | Richland Center, WI |
| Rockwell Collins | Cedar Rapids, IA |
| Rockwell Software Inc. | West Allis, WI |
| Ryan Incorporated Central | Janesville, WI |
| S & S Cycle Inc. | Viola, WI |
| STS Consultants LTD | Green Bay, WI |
| STS Consultants LTD | Milwaukee, WI |
| Sauk County Land Conservation Department | Baraboo, WI |
| Schenck Accurate Inc. | Whitewater, WI |
| Schlichting & Sons Excavating Inc. | Rockford, IL |
| Scot Industries Inc. | Muscoda, WI |
| SEH Construction Services | Rice Lake, WI |
| The Selmer Company | Green Bay, WI |
| Sentry Insurance | Stevens Point, WI |
| Short Elliot Hendrickson Inc. | Chippewa Falls, WI |
| Short Elliot Hendrickson Inc. | Rice Lake, WI |
| Siegel Engineering Inc. | Mercer, WI | Signicast Corporation | Milwaukee, WI |
| Smith Engineering Consultants Inc. | McHenry, IL |
| Snap On Tools Corporation | Kenosha, WI |
| Solutia Inc. | Indian Orchard, MA |
| Sony Electronics Inc. | San Diego, CA |
| Southern Illinois University at Carbondale | Carbondale, IL |
| SPX Corporation - Service Solutions | Owatonna, MN |
| SSI Technologies Inc. | Janesville, WI |
| Standish Industries Inc. | Lake Mills, WI |
| STA Rite Industries Inc. | Dela Van, WI |
| Statz Restoration & Engineering | Baraboo, WI |
| Robert R. Stenstrom Inc. | Rockford, IL |
| STORA ENSO North America | Wisconsin Rapids, WI |
| Strand Associates Inc. | Madison, WI |
| Strass-Maguire & Associates Inc. | Milwaukee, WI |
| Strattec Security Corporation | Milwaukee, WI |
| STS Consultants LTD | Milwaukee, WI |
| Super Western Inc. | Menomonee Falls, WI |
| Svedala Industries Inc. | Appleton, WI |
| Swiss Colony | Monroe, WI |
| TDS Telecom | Madison, WI |
| Technology Group Inc. | Neenah, WI |
| Techumseh Products Company | Newholstein, WI |
| Tenere Inc. | Dresser, WI | Textron Fastening Systems | Rockford, IL |
| Thilmany | Kaukauna, WI |
| 3M | Prairie Du Chien, WI |
| Titan Inc. | Racine, WI |
| TN & Associates | Milwaukee, WI |
| Toltz King Duvall Anderson & Associates Inc. | St. Paul, MN |
| The Toro Company | Tomah, WI |
| Trane Company | La Crosse, WI |
| Trostel SEG Inc. | Lake Geneva, WI |
| True North Engineering | Solon Spring, WI |
| Uni-Systems | Minneapolis, MN |
| United States Gypsum Company | East Chicago, IN |
| Universal Silencer | Stoughton, WI |
| URS Corporation | Milwaukee, WI |
| US Army Corps of Engineers | Rock Island, IL |
| US Army Corps of Engineers | St. Paul, MN |
| US Gypsum Corporation | Shoals, IN |
| Vernon Electric Corporation | Westby, WI |
| Vierbicher Associates Inc. | Reedsburg, WI |
| Village of Howard Engineering | Green Bay, WI |
| VORG INDAK | Delavan, WI |
| VP Buildings | Evansville, WI |
| Warner Electric Rotary Motion Division Brake and Clutch | South Beloit, IL |
| Manufacture Engineer Team Leader | Richmond, IL |
| Waupaca County | Waupaca, WI |
| Wausaukee Composites Inc. | Wausaukee, WI |
| Weather Shield Manufacturing Inc. | Medford, WI |
| Weaver Boos & Gordon | Chicago, IL |
| Welch Hansen & Associates Inc. | Delafield, WI |
| West Bend Company | West Bend, WI |
| Westbrook Associates Engineers, Inc. | Spring Green, WI |
| Wight Consulting Engineers, Inc. | Barrington, IL |
| Willett Hoffmann & Associates Inc. | Dixon, IL |
| Wisconsin Central LTD | Plover, WI |
| Wisconsin Centrifugal | Waukesha, WI |
| Wisconsin DOT District 2 | Waukesha, WI |
| Wisconsin DOT District 4 | Wisconsin Rapids, WI |
| Wisconsin Lake Schooner Education Association | Milwaukee, WI |
| Woods Equipment Company | Rockford, IL |
| Woodward Governor Company | Rockford, IL |
| WRR Environmental Services Company Inc. | Eau Claire, WI |
| Zenith Tech Inc. | Waukesha, WI |
| Zinga Industries Inc. | Reedsburg, WI |