Riot Blockchain completes upgrade to Oklahoma City mining facility with the purchase of an additional 1,000 Antminer S17-Pro machines
Source: https://cointelegraph.com/news/bitcoin-miner-riot-blockchain-announces-additional-1-000-rig-purchase
Bitcoin Miner Riot Blockchain Announces Additional 1,000-Rig Purchase
December 13, 2019
CoinTelegraph