1800s Ore Knob Copper Mine North Carolina, historic registered U.S mine copper nugget. 7 available to choose from (shown in photos with corresponding number) The old mine shafts operation from at an old settlement mine operation town from 1700s to 1800s, incorporation of the mining town in the mid 1800s. Specifically, from the older tunnels when the smelting of ore was done on mine site during its earliest operations. Rare antique mining relic historical copper natural nuggets ore. Choice 1 through 7. If you want more than one, contact me for combined shipping at the time of purchase. Mine history and a little about long history of the mining town can be found online.