India'slargest domestic steel producer Steel Authority of India Ltd (SAIL) will boostits iron ore purchase by 68% to 39 million tonne in 2013 from 23.25 milliontonne in 2010, to meet its expansion requirement. The state-owned companywill also boost coking coal purchases to 21 million tonne in 2013 from 13.8million tonne in 2010.