A stamp mill (or stamp battery or stamping 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 unit operation.
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Famous quotes containing the words stamp and/or mill:
“Only a still place
and perhaps some outer horror
some hideousness to stamp beauty,
a mark no changing it now
on our hearts.”
—Hilda Doolittle (1886–1961)
“The despotism of custom is everywhere the standing hindrance to human advancement.”
—John Stuart Mill (1806–1873)