Brass Rollring Mills

According to the analytical publication elite fixtures, which published the calculation of current cost of mining bitcoin, it takes about 18 months to extract one coin using antminer s9 equipment, while the energy costs will be about 18 thousand kw on antminer s7 btc will be created within more than 4 years, energy costs will be about 46 thousand kw on avalon 6 bitcoin mining may occur over.