Engineers - Geotechnical & Soils Engineers - Geotechnical & Soils Search | Advanced Search | New Members | Coupons and Discounts | All Categories Sort alphabetically by... Name City American Engineering Testing _ 4431 W Michigan Street # 4 Duluth, MN 55807 (218) 628-1518 Learn More | Visit Site Braun Intertec _ 4511 West First Street, Suite 4Duluth, MN 55807 (218) 624-4967 Learn More | Visit Site If your business isn't here, contact us today to get listed!