Discover More About Our National Firm


With over 400 employee-owners, AET has a strong reputation as the source for forensics, environmental, materials, geotechnical engineering consulting and accredited testing capabilities. Having our corporate headquarters in St. Paul, Minnesota, and 19 offices across the United States, AET has developed connections that reach nationally and internationally to sophisticated clients in a variety of market sectors.

Clients take advantage of our staff's unique knowledge base and extensive project management and consulting experience, supported by our specialized laboratory services and in-house drilling resources, to meet their needs. In addition to our expertise in geotechnical and environmental engineering, we also have an internationally recognized petrography department that can unlock the reasons for deficiencies in aggregates, cement, concrete and construction material performance.

We are technical professionals who care passionately about delivering reliable and thoughtful answers. Steering you in the right direction before problems happen, being a part of your innovative team and earning your trust are what matter most to us at the end of the day.

AET analyzes, tests and observes in order to document, verify and improve the design and construction efforts of other scientists and engineers, contractors, governmental agencies, state transportation authorities and owner's agents. Our firm is accredited or recognized by numerous state and federal agencies, including the AASHTO Materials Reference Laboratory (AMRL), the American Association for Laboratory Accreditation (A2LA), the Cement and Concrete Reference Laboratory (CCRL) and the U.S. Army Corps of Engineers (USACE). We are actively involved in many professional and trade associations within the engineering, materials and construction communities.

Contact AET with your questions or to request a proposal.
We look forward to working with you!