خزان أسوان
In 1929 he was appointed field director of the Archaeological Survey of Nubia under the auspices of the Egyptian Government Service of Antiquities, with authority to explore and excavate all ancient sites in Nubia which were soon to be flooded after the erection of the Aswan Low Dam. Working at Quban, Ballana and Qustul, he excavated the X-Group of tombs dating to the 3rd to 6th century A.D. He was assisted in his work by his wife, Molly. The completion of the excavations of the fortress at Buhen ended his work in Nubia.