Copper mining in Katanga dates back over 1,000 years, and mines in the region were producing standard-sized ingots of copper for international transport by the end of the 10th century CE.
coPper mIninG In KataNga daTEs bAck oVer 1,000 yearS, aNd mines In tHe region were producInG StanDArd-sizEd iNgots of COPpEr For internAtIonaL trANSport by tHe end of the 10TH centUry CE.