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Ernst Glanzmann searching for minerals; 1954.
UMG25A28_287

Ernst Glanzmann searching for minerals; 1954.

Extraction of metals. Engraving after a woodcut in Sebastian Munster's ""Cosmographia
UMG24A06_034

Extraction of metals. Engraving after a woodcut in...

Marble quarry.
UMG21A16_059

Marble quarry.

Open-pit mine of antracite.
UMG21A16_060

Open-pit mine of antracite.

Spain, Extremadura, Cáceres province, On 9 October 1881, King Alfonso XII
UMG21A06_252

Spain, Extremadura, Cáceres province, On 9 October...