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Puddling furnace and mechanical hammer, Essen, Germany

Puddling furnace and mechanical hammer, Essen, Germany

C045/4779

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30.0 MB (5.6 MB compressed)

2762 x 3795 pixels

23.4 x 32.3 cm ⏐ 9.2 x 12.7 in (300dpi)

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Credit

ANN RONAN PICTURE LIBRARY / HERITAGE IMAGES / SCIENCE PHOTO LIBRARY ANN RONAN PICTURE LIBRARY / HERITAGE IMAGES / SCIENCE PHOTO LIBRARY

Caption

Puddling furnace and mechanical hammer, Krupps Works, Essen, Germany, 19th century. Pig iron is being puddled to remove carbon and oxygen, after which the ball of hot metal (bloom) was then hammered. The process was sometimes repeated. Puddling produced the purest form of iron with great strength.

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