خزان أسوان
MacDonald retired from his service with the Egyptian government in 1921 and returned to Britain where he began a partnership with Archibald MacCorquodale. In 1927, the two were later joined by PH East (also an engineer in the Egyptian government from 1907 to 1926) and OL Prowde, at which time the name of the company was changed to Sir M MacDonald &amp; Partners. One of the first major projects of the partnership included the second heightening of the Aswan Low Dam, which continued from 1929 through design and construction stages until 1933. The firm continued on projects through its merger with Mott, Hay and Anderson in 1989.