Spectrum Planning Inc.
- Provides a complete suite of engineering and mapping services to the cable telecommunications industry: Fiberoptic Mapping, Fiber-optic Design, Cable Television Design.
- http://www.spectrumplanning.com/

Association for Facilities Engineering
- Professionals representing a cross section of the manufacturing and building maintenance industry. Includes many resources, links, and contact information.
- http://afestlouis.org

Rogers-Schmidt Engineering Co., P.C.
- Engineering Company specializing in industrial and institutional boiler house design. Sample clients, listings of services, and project samples.
- http://www.rogers-schmidt.com/

ABNA Engineering, Inc.
- Consulting engineers and surveyor's for the St. Louis Metro East area.
- http://www.abnaengineering.com/

GLA International
- Providing consulting, turnkey planning, business development, engineering, project management, construction management, data conversion, customer care software, AM/FM/GIS software and personnel contracting/recruiting for telecommunications and CATV provid
- http://www.glai.com/

Zambrana Engineering, Inc.
- An 8(a) certified, award winning, full service, engineering, planning and surveying firm.
- http://www.zambrana.com/

Crawford, Bunte & Brammeier
- Experts in the fields of traffic and transportation engineering, offering services in the following areas: traffic impact studies, traffic operation and safety studies, transportation planning and modeling, traffic signal design and optimization, roadway
- http://www.cbbtraffic.com/

Geotechnology, Inc
- A professional corporation offering a comprehensive range of consulting services in applied earth and environmental sciences, geotechnical engineering, materials testing, geophysics, drilling, and construction observation.
- http://www.geotechnology.com/