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history of crusher plants

history of crusher plants

Historytells us, it was in 1830, the first USpatentwas issued on a rockcrushingmachine. It covered a device which, in acrudeway, incorporated the drop hammer principle later used in the famous stamp mill, whosehistoryis so intimately linked with that of the golden age of mining. In 1840, anotherpatentwas issued, which comprised a wooden box containing a cylindrical drum apparently of wood also on …

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