Price Contest No. 13- Safipro 140- Infrastructure Repair; Gateway Repair - - Additional Specification: Repair And Re -Condendiction Service Pedestrian Catwalk On Sulfuro Copahue Lagoon C-P N ° 13- Safipro 140- Infrastructure Repair; Gateway Repair - - Additional Specification: Repair And Re -Condendiction Service Pedestrian Catwalk On Sulfuro Copahue Lagoon (EXPIRED)