Bob Sanderson begins working for Jack Mueller and Jim O’Brien at Sage Engineers and Land Planners as a rear chainman on a survey crew.

Jack Mueller starts Mueller Engineering in a converted garage on Grand Avenue. Bob works for Jack during vacations from college.

Jack calls Bob in Seattle, and Bob returns to work for the growing firm after a stint with the Department of the Navy.

Engineering, Inc. is incorporated and the firm continues to grow at its new location in the Plaza Office Building at 1629 Avenue D in Billings.