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What: Shares of Valmont Industries (NYSE: VMI) got a boost from investors today, jumping as much as 19% in intraday trading after the company announced fourth-quarter earnings.

So what: Valmont -- which manufacturers a variety of products including steel and aluminum poles, steel and concrete poles, and irrigation systems -- saw fourth-quarter results leap from a year ago. Revenue was up 50% from 2009 while operating earnings climbed 31%. Most of the gains however, were from the company's acquisition of Britain's Delta. Excluding Delta, revenue increased 14% year over year, while operating earnings were up 8%.

Now what: While the gains may not be scorching once you strip out the Delta contribution, the fourth quarter was a breath of fresh air in what was otherwise a difficult 2010. Revenue was up 11% for the year, but operating earnings fell 32%. Wall Street sees a strong bounce-back ahead for the company in 2011, with earnings per share expected to grow 37%. As investors are currently paying an earnings multiple of 23 on those 2011 estimates, they obviously have faith in Valmont's return to growth.

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Fool contributor Matt Koppenheffer does not own shares of any of the companies mentioned. You can check out what Matt is keeping an eye on by visiting his CAPS portfolio, or you can follow Matt on Twitter @KoppTheFool or on his RSS feed. The Fool's disclosure policy prefers dividends over a sharp stick in the eye.