View of village near Săcărâmb or Nagyág mines, Romania.

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Romani of Banat, historical region of Central Europe (shared between Hungary, Serbia and Romania) washing gold.

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18. Astronomical instrument. 19, 20. Condensation vessels (to turn gas into solid matter)21. Instrument for making detailed drawings, used in architecture and astronomy. 22. Drawing of coal mine, showing the ventilation system.

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Mine of silver and lead near the church of Agios Sostis on the peninsula of Agios Sostis, Sifnos island.

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General view of Lavrion and the mines, from the sea, 1870.

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Panoramic view of the silver mines of Lavrio.

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Ancient furnaces at Lavrio.

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Ancient washing-place at the silver mines of Lavrio.

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