
9 Sæson
77 Episode
Extreme Engineering - Season 2 Episode 9 Afsnit 9
In northern Minnesota, the operators of the world's largest open-pit iron mine commission the construction of a $10 million custom-built super-shovel in the hopes of making excavation more efficient.
- År: 2011
- Land: United States of America
- Genre: Documentary
- Studio: Discovery
- Nøgleord: engineering
- Direktør:
- Cast: