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| | The Twentieth-Century Metal |
 | | By 1920, in addition to its use in building railroads and automobiles, more steel was needed for oil refineries and storage tanks, for drill and line pipe, and for rolling into massive, one-piece beams that ushered in a new generation of skyscrapers, heavy bridge building and the construction of elevated railroad lines. |
 | | By 1929, the nations steel output had risen to 63.2 million tons, up from 47.2 million tons in 1920, and among the consuming markets, growth was most noticeable in the automobile industry, which displaced the railroads as the number one source of steel demand. |
 | | Steel production rose sharply from 67 million tons in 1940 to 89.6 million tons in 1944, and although all types of steel were in demand, plates used in ship construction were the foremost item produced by steel making during this period. |
| www.worldandi.com /public/1987/march/ns4.cfm (4068 words) |
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