The worlds deepest, biggest and deadliest open pit mines
The biggest iron mine. The worlds biggest open pit iron mine can be found near Hibbing, Minnesota. At its maximum, the area covered by the Hull Rust open pit mine is five miles (8km) long, 2 miles (3,2km) wide and 535 feet (180m) deep. It looks like a man made Grand Canyon of over 2,000 acres (8,1km178;).