/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: rajasekherreddyn https://cdn.slidesharecdn.com/profile-photo-rajasekherreddyn-48x48.jpg?cb=1523382394 I am an engineer and having 20 years Experience in drilling and exploration self employed currently working in Zambia for rural drinking water projects copper manganese Cole and iron mines specialized in drilling and exploration works