In the scorching midday heat of central Myanmar,dozen of families are hard at work. In the shade of tarpaulins and thatched-roof huts,workers operate old engine block and makeshift wooden drills in order to bring up that most coveted of energy sources: oil. The workers and their children collect the sticky crude oil in order to sell it to local refineries that use it to produce diesel and petrol. For some 250 impoverished families at Bandua Pen village in Thayet Township,Magway region, this dirty,backbreaking work is a key sours income.