Bitcoin mining firm CleanSpark (NASDAQ:CLSK) has purchased an additional 2,597 units of the Antminer S19 bitcoin (BTC) mining machines for immediate delivery. The purchase adds to the 2,711 rigs already purchased and scheduled for delivery this month. These orders are expected to substantially add to the company’s hashrate over the coming weeks. CleanSpark currently operates over 12,800 miners, providing a hashrate of 1.3 EH/s. Shares trading +0.52% pre-market