The Tongkuang Copper Mine Site

　　   The Copper Mine Site (Third Batch of Provincial-Level Protected Sites)

　　   Era: Han Dynasty

　　   Address: In the Zhongtiao Mountains, Yuanqu County

　　   The copper mine site was first discovered in the 1950s. It features mining tunnels and ore smelting work areas. Mining tools unearthed inside the caves mainly include iron hammers and iron chisels. Copper ore and smelting slag have been collected. A large amount of charcoal was also found in the caves, suggesting that the ore was likely extracted using heating methods at the time.