Bilder Videos

Ertzt Bilder ❘ Science Photo Library

Refining gold
11726533 - Refining gold
Refining of silver
11726522 - Refining of silver
Assaying
11726519 - Assaying
Purification of silver in a furnace
11726532 - Purification of silver in a furnace
Recovery of gold from amalgum
11726520 - Recovery of gold from amalgum
Washing ore to extract gold
11721496 - Washing ore to extract gold
Assay laboratory
11726531 - Assay laboratory
Roasting gold ore to recover the metal
11726523 - Roasting gold ore to recover the metal
Assay laboratory for gold and silver
11726534 - Assay laboratory for gold and silver
Smelting of copper
11721482 - Smelting of copper
Assaying copper and lead
11726521 - Assaying copper and lead
Assaying copper
11726524 - Assaying copper
Smelting copper
11726518 - Smelting copper
Assaying of silver
11726525 - Assaying of silver
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