Nickel production at BHP Billiton's Cerro Matoso mine in Colombia fell 11.5% in the first quarter due to lower ore extraction and the repair of a transport system, the company said.
Cerro Matoso produced 11,600 tones of nickel in January to March from 13100 tones in the same period last year, Harri said in an email statement.
Colombia's energy ministry says it expects Cerro Matoso output at 50200 tones this year, 51400 tones in 2011 and 51100 tones in 2012. The mine produced 51800 t last year, a 24% rise from 2008, according to company statements.
Nickel production at Cerro Matoso started in 1982 under the Colombian government, BHP and Hanna Mining. BHP gradually increased its stake to 99.9%from 53 %.
Colombia has six nickel deposits with measured reserves totaling 37.8 million tones and 46.48 million tones in indicated reserves, the government says.
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