Bucket-wheel excavator
BWEs built since the 1990s, such as the Bagger 293, have reached sizes as large as 96 metres (314.9 feet) tall, 225 metres (738.2 feet) long, and as heavy as 14,200 metric tons (31.3 million lb). The bucket-wheel itself can be over 70 feet in diameter with as many as 20 buckets, each of which can hold over 15 cubic metres of material. BWEs  are now capable of operating in extreme climates. Many BWEs have been designed to operate in climates with temperatures as low as -45°C (-49°F).