Construction of Underground Works for New Transfer System. Andean Division
BUSINESS AREA:  Mining
PROJECT TYPE:  Mining tunnels
START DATE:  10 / 2014
END DATE:  In process
CLIENT:  CODELCO
LOCATION:  Chile
LENGTH:  11,133 m of galleries and caverns (including 4,833 in Haulage tunnel 3) 260 m of Raise Boring.
SECTION:  Haulage tunnel 3: 42 m² (7.5x6), the rest ranging from 4x4 galleries to 15x16 m² caverns. Raise borings with ND of 2 and 3 m.