Stamp mill - WikipediaA stamp mill is a type of mill machine that crushes material by pounding rather than grinding, . Both texts mentioned the use of vertical stamp mills for ore-crushing. . In this woodcut image, there is the scene of three martinets and a waterwheel . They were common in gold, silver and copper mining regions of the US in the.picture of stamp mill powdering gold rocks,Rock Crushing methods and How to recover gold from OresInformation on Rock Crushing methods and How to recover gold from Gold and Silver Ores: . This iron cylinder is picked up and dropped onto the ore, much in the manner of the old time stamp mills. . This reduces most of your rock quite literally to powder. . Here are some interesting photos of beautiful Gold Nuggets.
picture of stamp mill powdering gold rocks