A specialized structure used primarily in coal and ore operations to unload bulk materials from open-top railcars. The mechanism locks the car in place and rotates it on its longitudinal axis to dump the contents into a bin or conveyor below. The term also refers to the entire loading and unloading building at a mine.
Heard on the job
The local crew will pull the empties from the tipple and spot twenty more loads before shift change.
Also heard as
- rotary dumper