Today, glass-and-steel commercial towers fill the city's thriving Central Business District.

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November's weakness was driven by a significant drop in demand for commercial aircraft, though weakness in autos, steel and defense communications equipment also played a role.

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Robert Steel doesn't have any experience running a commercial bank, but he knows a lot about the stock market and financial regulation.

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That's all good news for Commercial Metals (54, CMC) , which operates small steel mills, mostly in the South, that make the rebar needed in concrete.

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It is the first commercial jet built mostly from carbon-plastic fibres rather than conventional aluminium and steel, making it more lightweight, and therefore, fuel-efficient.

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Ampco Pittsburgh ( AP) is a rarity in the steel industry because it makes the mill rolls used by major steel manufacturers as well as air conditioning and heating equipment used by commercial buildings.

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Branagan predicts that within the decade his new kind of steel will be available in sheets and solid parts, making its potential commercial applications infinitely greater.

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Perhaps not coincidentally, Steel, a former Goldman Sachs executive, has no hands-on experience running a commercial bank.

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It might yield big benefits for commercial airlines and retail chains, which typically lease a large fraction of their assets, and for steel- and automakers that have large unionized workforces, which will give them greater leverage to renegotiate collective bargaining agreements.

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In the past few years, high-end commercial kitchen makers have jumped into the backyard grilling game with a slew of snazzy, feature-packed stainless steel models.

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