Photos: China has one of world's largest bitcoin mines Quartz
Aug 17, 2017 . The mine belongs to Bitmain, a Beijing based company that also makes mining machines that perform billions of calculations per second to try and crack the cryptographic puzzle that yields new bitcoins. Fifty Bitmain staff, many of them local to Ordos, watch over eight buildings crammed with 25,000.
How Underground Mining Works . HowStuffWorks
See more mining pictures. Andy Zakeli/Fairfax Media via Getty Images. In 2010, people everywhere were riveted to the story of the 33 miners in Chile trapped 2,300 feet (700 meters) underground in a copper and gold mine. The miners spent more than two months there, getting food, air and letters from loved ones through.Get Price