 From the beginning of his tenure , he sought to distance himself from previous Director @-@ Generals and their administrations by criticising them in print and attempting to introduce new staff who had no loyalty to his predecessors . <unk> with a four @-@ year contract , Wheeler attempted to recruit two archaeologists from Britain , Glyn Daniel and Stuart Piggott , to aid him in reforming the Archaeological Survey , although they declined the offer . He then toured the subcontinent , seeking to meet all of the Survey 's staff members . He had drawn up a <unk> containing research questions that he wanted the Survey to focus on ; these included understanding the period between the Bronze Age Indus Valley Civilization and the Achaemenid Empire , discerning the socio @-@ cultural background to the <unk> , dating the <unk> invasion , and establishing a dating system for southern India prior to the sixth century CE . During his time in office he also achieved a 25 per cent budget increase for the Archaeological Survey , and convinced the government to agree to the construction of a National Museum of Archaeology , to be built in New Delhi . 
