Alaska's Fort Knox Fairbanks gold mine thought to close
Jan 06, 20200183;32;Fort Knox was a first for Alaskas mining industry in a number of ways. Most lode gold mines, where the metal is entrained in rock, are of higher grades. The Fort Knox ore was very low grade, however, but there was a lot of it. However, it had to be mined and processed at high volumes to achieve economies of scale.