“You’re really only dropping maybe 300 or 400 feet deep every time ... of digging what was once the world’s largest open-pit mine. Today it employs more than 2,300 employees, including ...

The Russian aluminum producer Rusal completed construction of the Cheremukhovskaya - Glubokaya mine in its pit in Severouralsk ... The shaft is the deepest in Russia and is among top five deepest ...