Bucket-wheel excavators (BWEs) are heavy equipment used in surface mining. The primary function of BWEs is to act as a continuous digging machine in large-scale open pit mining operations. What sets BWEs apart from other large-scale mining equipment, such as bucket chain excavators, is their use of a large wheel consisting of a continuous pattern ...
Found on
http://en.wikipedia.org/wiki/Bucket-wheel_excavator
(from the article `coal mining`) The bucket-wheel excavator (BWE) is a continuous excavation machine capable of removing up to 12,000 cubic metres per hour. The most favourable soil ...
Found on
http://www.britannica.com/eb/a-z/b/124
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