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LIMA, Mar 23, 2010 (Dow Jones Commodities News via Comtex) -- A strike begun Tuesday at a copper mine owned by Doe Run, a unit of the U.S.-based Renco Group Inc., has stopped production, a union official said.
The strike is the second this year at Cobriza, Peru's sixth-largest copper mine, which produced 18,519 metric tons of the red metal in 2009, according to mining ministry figures.
&quot;The strike is indefinite,&quot; said Luis Castillo, general secretary of Peru's National Federation of Mining.
Castillo said the strike was called by workers demanding a one-time bonus. The same reason was given for a two-day strike at Cobriza in mid-February. 
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