Digital Currency Group, a crypto conglomerate that ran into trouble during the 2022 crypto-market meltdown, has launched a new business focused on mining cryptocurrencies. Dubbed Fortitude Mining, the business is a spinout from DCG’s bitcoin-mining infrastructure company Foundry and will focus on mining a variety of cryptocurrencies beyond bitcoin. Fortitude will be the fifth subsidiary under DCG, the sprawling crypto company that founder Barry Silbert said he modeled after Warren Buffett’s Berkshire Hathaway.