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Empresas y finanzas

Coal miner Alpha Natural posts fourth-quarter loss


    (Reuters) - Coal miner Alpha Natural Resources Inc posted a fourth-quarter loss, partly because some customers switched to cheaper natural gas for power generation.

    Alpha's stock fell 4 percent to $19.00 in premarket trading.

    The net loss was $733.3 million, or $3.34 per share, compared with net income of $10.8 million, or 9 cents per share in the same quarter of 2011, the Abingdon, Virginia-based company said on Friday.

    Excluding a goodwill impairment charge of $745 million and other items, the adjusted loss from continuing operations was 7 cents per share.

    (Reporting by Steve James in New York)