In 1964, Tuscaloosa Testing Laboratory was founded. Our work consisted of testing concrete cylinders. As our services and locations expanded, Tuscaloosa Testing Laboratory became TTL, Inc. in 1985. Today, our services include geotechnical engineering, analytical laboratory testing, construction materials testing and environmental consulting. TTL has 6 offices throughout the southeast which includes Tuscaloosa, Montgomery, Decatur, AL; Albany & Valdosta, GA; and Nashville, TN.