جبل علي
Duff's involvement is reported in the establishment of Port Rashid in 1972, the first port in the region as well as in the making of the Port of Jebel Ali in 1979, which has grown over the years to become the largest man made harbour and the 9th businesst container sea port in the world. Six years after the opening of Jebel Ali port, Duff assisted in the creation of Jebel Ali Free Zone in 1985 to supplement the activities of the port.