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Summary
| Description |
English: Drawing of a rotary dump, a machine used to unload coal from a mine car. The dump is installed inside a coal tipple. A mine car loaded with coal is positioned inside the dump (see illustration on the left). The dump is then operated to tip the car and unload the coal into a chute beneath the tipple (right illustration). |
| Date | |
| Source | Ketchum, Milo S. (1913). "The Design of Mine Structures." (New York: McGraw-Hill) p. 154. |
| Author | illustrator not specified |
Licensing
|
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
 Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings. |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 04:09, 7 April 2013 | | 590 × 194 (66 KB) | Caseyjonz | == {{int:filedesc}} == {{Information |Description={{en|1=Drawing of a rotary dump, a machine used to unload coal from a mine car. The dump is installed inside a {{w|coal tipple}}. A mine car loaded with coal is positioned inside the dump (see illustrat... |
File usage
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