 The regional laboratories of the institution were located in Dhaka, Rajshahi and Chittagong (East Pakistan), and in Lahore and Peshawar (West Pakistan).In 1953, he founded the Pakistan Academy of Sciences as a non-political think tank of distinguished scientists in the country.In 1956, when Government of Pakistan established Pakistan Atomic Energy Commission (PAEC) as an atomic research agency, Siddiqui was designated as its technical member.