Career
When the serving Superintendent of the Northern Circle, J. Ph. Vogel resigned from the survey, Hargreaves was transferred to the Northern Circle to fill in his post. During his tenure in the Northern Circle, Hargreaves visited the mounds at Harappa, Rajanpur and Sarnath and participated in the excavations at Harappa under John Marshall.
Hargreaves returned to the Frontier Circle a few years later and carried out excavations at Nal, Baluchistan in May 1924.
He was made Deputy Director General of the Applied Science International and in 1928, succeeded John Marshall as Director General.
