Fort knox and True north mine

 The Fort Knox gold mine is an open pit gold mine, 9 mi (14 km) east of Fox in the Fairbanks mining district of Alaska.  The Fort Knox Gold Mine, located 15 mi (24 km) northeast of the city of Fairbanks, operates as a single large open pit. From 2001–2004, the True North Mine, a small satellite deposit was operated and the ore was processed through the Fort Knox mill. Production from Fort Knox is up to 45,000 tonnes (50,000 short tons) per day of low grade ore (1 gram per tonne), with two mineral processing streams, carbon-in-leach (CIL) for higher grade ore, and heap leaching for lower grade ore). Surpassing 7 million ounces in 2016, Fort Knox is the largest producer of gold in the history of the state of Alaska.