Government has chalked out a plan to put as many as 280 mines with a mineral wealth of over Rs 10 lakh crore to auction in the next fiscal. According to Mines Secretary Balvinder Kumar, soon the drone technology will be used for preparing topography maps and inspection of mines. He also talked about a web portal for giving single window clearance for prospective licence to application for exploration of mineral blocks. As many as 21 mining leases have already been auctioned so far with a cumulative resource value of around Rs 94,000 crore.