Chuquicamata (Codelco) in Chile is the biggest open pit in the world, followed by Bingham Canyon near Salt Lake City. I believe the biggest planned pit could be at Olympic Dam in Australia, but is currenly only in planning stage.
Hambach open pit mine was created in 1978.
The Hull Rust Mahoning Mine is the largest open pit iron mine in Minnesota. It is located in the city of Hibbing, Minnesota. It is about 1.5 miles across and 3.5 miles deep.
The largest open pit mine in the world is the Bingham Canyon Mine, located near Salt Lake City, Utah, USA. It is one of the largest man-made excavation in the world and has been in operation since 1906.
The world's largest diamond mine is located in Botswana. It is of open pit construction and the area of it makes it the world's largest diamond mine.
The worlds largest open pit mine is the Kennecott copper mine in Utah. its is more than 2 3/4 miles across and more than 3/4 of a mile deep. The worlds largest mine? The Syncrude mine (the biggest mine in the world at 191 km2). Quite a bit larger than Kennecott.
I think it is the Lavendar Pit (copper mine) in Bisbee, AZ.
The world largest open pit mining is bingham Canyon Mine, it's 1,900 ares and 7.7 km2 and 2.5 miles deep!
Mine is inside the ground.Quarry is on the ground.It is a open pit mine.
In Butte, Montana.
Strip mine Open-pit mine Shaft mine
The Jubilee Mine in Russia is the largest open-pit diamond mine in the world. It exists on the Yubileynaya kimberlite pipe. From a mining engineering Web site, here is the definition of open-pit mining: "[It is]. . . an excavation or cut made at the surface of the ground for the purpose of extracting ore and which is open to the surface for the duration of the mine's life."
Utah, USA :)