The Bingham Canyon copper mine in Utah is the world's largest human-made excavation. Like most large open-pit☀️ mines, Bingham's walls are terraced to reduce landslide risk and enable heavy equipment to reach mineral-bearing rock. Vertical faces are☀️ called "batters," horizontal surfaces are "benches."

OK Tedi Mine in Western Province (Fly), was the largest mine in Papua New Guinea, producing☀️ approximately 23.58 million metric tons per annum (mmtpa) of Run-of-Mine (ROM) in 2024. The OK Tedi Mine is owned by☀️ Mineral Resources Development Co Ltd;Government Of Papua New Guinea, and is due to operate until 2030.