Technical bids coming for the seventh round of commercial coal block auctions will be opened on June 28, an official statement said on Monday.”As part of the auction process, Technical Bids comprising of online and offline bid documents will be opened on June 28, 2023, 10:00 am onwards at New Delhi, in the presence of the bidders,” the Ministry of Coal said in a statement.The last date for submission of online technical bids for all the coal mines is 1200 hours on June 27, 2023, and offline submission is 1600 hours on June 27, 2023, it said.