1980’s. Public domain pumps. Indian Mark 2, Afridev. Because of drought in India there was a need for hand pumps for deep wells. New well drilling technologies were developed for deep wells/ boreholes with technologies like The “down the hole hammer”. In this period the Indian Mark 2 and later on the Afridev pump were developed. They were public domain, open source so many companies started to produce them. An estimated 7 million of these pumps were produced and about 1 million installed in Africa. They are still being produced now.