19th century stamp mill, also known as a stamp battery or stamping mill, crushing ore by pounding. After an illustration in Appletons' Cyclopaedia of Applied Mechanics, published 1880.

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Keywords: 19th, archival, archive, battery, century, crushed, crushes, drawing, engraving, historical, history, illustration, industrial, industry, machine, machinery, machines, mill, ore, period, picture, pounding, print, stamp, stamping, vintage