Bitcoin Miners Want to Recast Themselves as Eco-Friendly

Along a dirt-covered road deep in Texas farm country, the cryptocurrency company Argo Blockchain is building a power plant for the internet age: a crypto “mining” site stocked with computers that generate new Bitcoins.

But unlike other Bitcoin mining operations, which consume large quantities of fossil fuels and produce carbon emissions, Argo claims it’s trying to do something environmentally responsible. As Peter Wall, Argo’s chief executive, led a tour of the 126,000-square-foot construction site one morning this month, he pointed to a row of wind turbines a few miles down...