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De re metallica (1912)

Agricola, Georg, Hoover, Herbert · leaf 357

An illustration from De re metallica, 1912, leaf 357
A . — Mortar . B — Open end of mortar . C — Slab of rock . D — Iron sole plates . E — Screen . F — Launder . G — Wooden shovel . H — Settling pit . I — Iron shovel . K — Heap of material which has settled . I . — Ore which requires crushing . M — Small launder .

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