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Iron Plate Antique Mining Ore Crusher

Apr 16 history tells us it was in 1830 the first us patent was issued on a rock crushing machineit covered a device which in a crude way incorporated the drop hammer principle later used in the famous stamp mill whose history is so intimately linked with that of the golden age of miningin 1840 another patent was issued which comprised a wooden box containing a cylindrical drum apparently of.

Iron Plate Antique Mining Ore Crusher

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