A continuous digging machine originally designed and used in large-scale stripping and mining of brown coal deposits in eastern Germany. Its digging mechanism is essentially a boom on which is mounted a rotating vertical wheel having buckets on its periphery. As the rotating wheel is pressed into the material to be dug, the buckets cut, gather, and discharge the material onto a conveyor belt where it is moved to the mined materials transport system.
Source:
Dictionary of Mining, Mineral, and Related Terms












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