d. 20th-Century Explorations

VI. The World Wars and the Interwar Period, 1914–1945> A. Global and Comparative Dimensions> 5. Technological Developments> b. Materials and Construction

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  The Encyclopedia of World History.  2001.

b. Materials and Construction
1928
The first steel-frame, glass-curtain-wall building completed. By 1960 this technique was practically universal for high buildings; developed particularly by L. Mies van der Rohe (1886–1969).	1
1941
Shell molding, a revolutionary process producing more accurate castings cheaply, invented by Johannes Croning. Powder metallurgy, although known since Wollaston's work at the beginning of the 19th century, achieved extensive application in mid-20th century.	2
1945
Industrial development of silicones proceeded apace for a wide variety of applications, including lubricants for exceedingly high and low temperatures; binding of fiberglass; water-repellent agents; etc.	3

The Encyclopedia of World History, Sixth edition. Peter N. Stearns, general editor. Copyright © 2001 by Houghton Mifflin Company. Maps by Mary Reilly, copyright 2001 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

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