 London-based Bitcoin CRYPTO: BTC mining giant Argo Blockchain ADR NASDAQ:ARBK plans to build an 800-megawatt data center in West Texas that would cost the firm from 1.5 to 2 billion. What Happened: The cost estimate for the mining facility is based on the type of mining machines to be installed in the facility, the mix of owned and hosted machines, the cost of raw materials, labor and power required to construct the facility, the timing of build-out and machine purchase, and other factors, according to a Friday regulatory filing from Argo Blockchain. 