Biggest excavation in the world

https://youtu.be/M0rXA8BSb0E?si=1-gjfvHa7WHAtf-1

0:38 it will take us about 7 years to remove overburden before extracting ore when we expand the mine 1000 feet further. 

The ore has about 1:1000 parts copper by weight. 

1:48 we've produced 19 million tons of copper from 8 billion tons of ore