PASA Successfully Concludes the Sale of Its Interest in PetStar to Arca Continental
   PASA Announces the Sale of Its Interest in PetStar to Arca Continental
   PASA Renews Waste Management Contract in Torreon, Coah

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   News Briefings December 2011
   News Briefings November 2011
   News Briefings October 2011

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   July 2010
   Abr 2010
   Jan 2010

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