Prospector Center > A place to learn, equipment shop, and
Jul 07, 2017·There are over 2,300,000,000 square acres in the United States. Mining in the U.S. takes up 5,569,929 acres, or 8,703 square miles. Most of this total is devoted to gravel pits and coal mines. Currently there are only 345 mines producing all types of metals, gold, silver, copper, iron, etc.