- Applied Mechanical
- Beu-Math Engineering
- DPR Construction
- Ionics Pure Solutions
- Jacobs Engineering
- Jokake Construction
- Kitchell Contracting, Inc.
- Lutz Engineering, Co.
- Pro Services, Inc.
- Reliance Build, Inc.
- Robert Hanson
- Siemens Building Technologies
- Sygnos, Inc.
- Bank One
- Honeywell, Inc.
- Motorola, Inc.
- Microclean, Inc.
- National Specialty Aggregate
- ON Semiconductor
- Quaker Oats
- Tosco Refining
- Tube Specialties
- US West
- Arizona State University