1. Mineral resource potential for copper, lead, zinc, and combined base metals in the Charlotte 1° x 2° quadrangle, North Carolina and South Carolina [cartographic material] Yale Public content 1986. 2015-06-18T17:47:28Z. 2015-07-03T22:08:37Z. Geological Survey (U.S.). U.S. Geological Survey ; For sale by Branch of Distribution. English. cartographic image. Public. North Carolina and South Carolina.