As much as Pfizer helped lift stocks, fellow Dow component Caterpillar was weighing on the market, after the construction equipment maker's fourth-quarter results came up short of estimates.

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Such an investment would create jobs in engineering, construction and computer fields, and have indirect effects on manufacturing and component assembling employment.

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By the same token the thirty-year hiatus in construction of new nuclear plants following Three Mile Island limited another important component of our energy mix and reduced our current options.

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