TeraWulf ( NASDAQ: WULF ) said Tuesday it would buy 18,500 Antminer S19j XP bitcoin mining machines worth $75 million. The purchase of new mining machines would expand its self-mining capacity to 7.9 EH/s. The company currently expects to pay $53.4 million, or $19.10 per terahash, for the mining machines after coupons and credits. According to the purchase agreement, the 18,500 miners are scheduled to be shipped by BITMAIN in equal monthly allotments in October, November, and December. The new S19j XP machines will be deployed at the company’s Lake Mariner facility in New York. Press Release .