EditorialProcessing with a sieve_1, The ore shredded from the punch is sieved so that larger pieces can be pounded a second time, the sieved sand is washed, woodcut, p. 223, (Liber octavus), Manuel, Hans Rudolf (graveur sur bois), 1556, Georgius Agricola: De re...
EditorialGradual processing with a sieve, The ores are gradually sieved with increasingly dense sieves, finally they are washed in water barrels, woodcut, p. 227, (Liber octavus), Manuel, Hans Rudolf (graveur sur bois), 1556, Georgius Agricola: De re metallica ...
EditorialWaschtr?ge_7, Washing of lead ores, lead ore is dried and sieved, woodcut, p. 281, (Liber octavus), Manuel, Hans Rudolf (graveur sur bois), 1556, Georgius Agricola: De re metallica libri XII: quibus officia, instrumenta, machinae, ac omnia denique ad m...