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La Praille: Bridge under construction; using prefabricated steel elements; 1966
UMG25A14_066

La Praille: Bridge under construction; using prefa...

This illustration dates to the 1870s and shows a cupola furnace. This type of furnce was the
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This illustration dates to the 1870s and shows a c...

Johannes Gutenberg (1398-1468) was a German goldsmith and printer in Strassbourg, Germany. He is
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Johannes Gutenberg (1398-1468) was a German goldsm...

Great leap forward, the kuhsien steel mill in changchi city added about 220 small local-type furnaces in seven days, increasing the daily steel output from a meager 90 tons to 2,150 tons - surpassing ...
UMG20B00_492

Great leap forward, the kuhsien steel mill in chan...

New Type Of Autoclave
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New Type Of Autoclave

Walter Steel at his colonial-style house. Walter Steele, a British colonial administrator in
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Walter Steel at his colonial-style house. Walter S...