US Mines to Market National Mining Association
Sep 9, 2014 zinc and 1.8 ounces of gold, among other minerals and metals, will allow the . 9 Top U.S. mines (2013) Platinum and palladium. 29. 10 Top U.S. . Ore grade, ore content, location, input prices, scale of operations, type of mining . of gold, among other minerals and metals (see also Table 2), will enable.