Although many mining stocks have rebounded, Core Scientific has kept dropping. The largest mining company by hashrate fell 12% over the past seven days and is now down 71% YTD. We shouldn't forget that Core Scientific is a strong company with a history of operational excellence, so the stock's massive decline this year doesn't reflect the company's quality.Cathedra is the second-worst performer after falling 9%. This stranded natural gas-focused miner is one of the smallest publicly traded mining companies, with an operating hashrate of only 0.2 EH/s. Getting the company prepared for a prolonged economic downturn is a top priority for its management, which recently announced that the company had sold almost its entire bitcoin holdings. Several other mining companies have also recently decided to sway away from the mine-to-hodl strategy, including Core Scientific, Marathon, Riot, and Bitfarms. That miners who previously were vocal on never selling bitcoin have started to sell tells us that conditions are tightening in the mining industry. In this article, I analyze the balance sheets and bitcoin production costs of public mining companies to determine which of them are best prepared to weather the storm.