The locomotives and railcars will probably be delivered in April before the mines starts exporting coal in September. The Benga mine is expected to produce 5.3 million metric tons (mt) of met coal a year by the second half of this year. Output may rise to 20 million mt of met coal a year by 2013 of which 10 million mt will be exported. The project, jointly owned by TATA Steel, has an estimated coal reserve of 502 million mt.