The image shows mine workers sieving material through both dry and wet sieves from Georgii Agricolae De re metallica libri xii, qvibu officia,instrumenta, machinae...
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Image ID: SIL-SIL7-229-05
Supplied Caption: p. 227 of Georgii Agricolae De re metallica libri xii
Original Caption: The image shows mine workers sieving material through both dry and wet sieves.
People in the 16th century needed metal just as much as we need it today. Tools, utensils, and weapons were often made of metal. Getting the metal was hard work, though. While we have machines that separate metal ore from debris, they had to use sieves that they operated by hand. It was hot, dangerous, and difficult work. This illustration shows mine workers sifting material through dry and wet sieves. The image appears in a book by Georgius Agricola, a European physician who wrote about rocks, minerals, and fossils in the mid-1500s. Some consider him the founding father of geology.