e tin - stone at the same time . The washers , whose feet are covered with high boots made of hide , though not of rawhide , themselves stand in the ditch and throw out of it the roots of the trees , shrubs , and grass with seven - pronged wooden forks , and push back the tin stone toward the head… … A — Trough . B — Wooden shovel . C — Tub . D — Launder . E — Wooden trowel . F — Transverse trough . G — Plug . H — Falling water . I — Ditch . K — Barrow CONVEYING MATERIAL TO BE WASHED . L — PlCK LIKE THE BEAK OF A DUCK WITH WHICH THE MINER DIGS OUT THE MATERIAL FROM WHICH THE SMALL STONES ARE…
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![An illustration from Georgii Agricolae De re metallica : libri XII. Quibus officia, instrumenta, machinae, ac omnia deni[que] ad metallicam spectantia, non modo luculentissimè describuntur, sed & per effigies, suis locis infertas, adiunctis latinis, germanicis [que] appellationibus ita ob oculos ponuntur, ut clarius tradi non possint. ; Eiusdem De animantibus subterraneis liber, (1556)](https://img.insideoutlibrary.com/img/200/ia-gri_000033125008455038-278-192.webp)
![An illustration from Georgii Agricolae De re metallica : libri XII. Quibus officia, instrumenta, machinae, ac omnia deni[que] ad metallicam spectantia, non modo luculentissimè describuntur, sed & per effigies, suis locis infertas, adiunctis latinis, germanicis [que] appellationibus ita ob oculos ponuntur, ut clarius tradi non possint. ; Eiusdem De animantibus subterraneis liber, (1556)](https://img.insideoutlibrary.com/img/200/ia-gri_000033125008455038-249-167.webp)
