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A Century of American Steel: The Strip Mill and the Transformation of an Industry

By (author) Kenneth Warren

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The steel industry provides much of the material basis for modern civilisation. Although its end products are numerous, the largest sector of the industry is involved in the production of wide strip. This is used by countless other industries to make a range of products from automobile bodies, and the cases of domestic appliances, to metal furniture and cans for the preservation of foodstuffs and drinks. A hundred years ago sheet steel was made in labor-intensive operations by a large number of small rolling mills. This is an account of how this relatively backward part of the industry was transformed by the invention and industrial application of a revolutionary new technology. In the hot strip mill a slab of steel was passed through a series of rolls to be reduced into a continuous band of wide strip, which was then shipped either as coils or cut into sheets. The introduction of the wide continuous hot strip mill began to concentrate the sheet and tin plate industry into much bigger operations complete with iron making, steel works, rolling mills and finishing plant. New companies rose to prominence; some old industry leaders fell behind. Many former locations for sheet manufacture were abandoned, but other old plants and companies re-equipped and survived. Major producers of other products entered the new trade. Less than thirty years ago another major change began when electric arc steel furnace operators began to install strip mills and the trade of the now rather inappropriately named `mini-mill` grew rapidly at the expense of the longer established ironâ€”open hearth steelâ€”primary rolling millâ€”strip mill industry. Now, as its centenary approaches, the strip mill sector is still undergoing major changes. This book surveys the growth, structure and changes in this dominant part of the steel industry. The strip mill has transformed steel world-wide, but in its origins and development it has above all been a distinctively American achievement.