Stamp mill
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A stamp mill is a type of mill machine that crushes material by pounding rather than grinding, either for further processing or for extraction of metallic ores. Breaking material down is a type of uni
Detail of Californian stamp showing offset cam and rotating lifter
Interior of the Deadwood Terra Gold Stamp Mill
Eight heads of Cornish stamps powered by a waterwheel
A five unit Californian stamp mill once used in Arizona for crushing copper ore.
Trip hammer
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A trip hammer, also known as a tilt hammer or helve hammer, is a massive powered hammer. Traditional uses of trip hammers include pounding, decorticating and polishing of grain in agriculture. In mini
A 1960s trip hammer placed at Trattenbach village, Lower Austria
The same trip hammer in operation, shaping a folding knife at the strike area
Model of a grain processing workshop with a trip hammer. China, Eastern Han dynasty, 25-220 CE
A water powered trip hammer from the Nong Shu by Wang Zhen (fl. 1290–1333)