At the University of Newcastle, he held an appointment as lecturer from 1966 to 1969 and worked under the supervision of Kurt Hoselitz (1916–2010) and Kenneth Creer (1925–2020).
[2] For the academic year 1969–1970 Banerjee was a lecturer at the University of Pennsylvania and worked in the laboratory of the Franklin Institute in Philadelphia.
[3] In 1974 he gained fame for the book The physical principles of rock magnetism, co-authored with Frank D.
[6][7][8][9][10] In 1976 he was appointed an adjunct professor in the University of Minnesota's Program of Middle Eastern and Islamic Studies.
He was involved in the development of rapid methods for the paleomagnetic study of soils and their use in stratigraphy and climate reconstruction dating as far back as the midpoint of the Middle Paleolithic.