In second and third place are two mines owned by First Quantum Minerals – Guelb Moghrein in Mauritania and Las Cruces in Spain – with AISC of $1,918/t and $2,050/t respectively, while the Vancouver company’s Zambian operation also cracks the top 10.
The fourth place is shared by the Antas mine in Brazil owned by Oz Minerals and Atico Mining’s El Roble mine in Colombia, both operating at all in costs below $3,000/t during Q2 2020.
A majority of copper operations in the top 10 use truck & shovel technology, with the exception of El Roble (drift & fill, cut & fill), Carrapateena (sublevel caving), Jabal Sayid (long hole stoping) and Cozamin (long hole stoping, cut & fill).
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