The Pennsylvania-based Stronghold Digital Mining has announced the completion of two private equity securities raises worth $105 million.According to an announcement shared with Cointelegraph, the firm’s first power generation facility, the Scrubgrass Generation Plant in Venango County, converts waste coal into energy on a scale equivalent to “a large-scale hydropower plant” … [Read more...] about US miner raises $105M to recycle waste coal into crypto