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SAO PAULO, May 7 (Reuters) - Brazilian steelmaking and mining group Cia Siderúrgica Nacional SA on Wednesday posted net income of 52.1 million reais ($23.3 million) for the first quarter, compared with a year-earlier profit of 16.3 million reais.
Net income at the São Paulo-based company, commonly known as CSN, was expected to reach 218 million reais in the quarter, according to the average estimate in a Reuters poll of five analysts.
Company officials will discuss results at a conference call with investors later on Wednesday.
$1 = 2.23 Brazilian reais Reporting by Asher Levine