Germany, May 22 -- ACS and HOCHTIEF Group companies Turner and FlatironDragados have been recognized among the industry's leading firms in the latest Engineering News Record rankings.Turner was again ranked number one overall in the ENR Top 400 Contractors list, marking its sixth consecutive year at the top.Turner also ranked first in domestic building and manufacturing revenue and significantly advanced its position among contractors working internationally as a result of expansion in global markets. The company also increased its ranking in the telecommunications sector, reflecting continued growth in advanced technology and data center construction.FlatironDragados ranked first in transportation and domestic heavy contracting revenue and...