Open invitation to tender, deadline 13.02.2009, for tunnelling works for construction of 820 MW, USD1.1 billion Sogamoso River hydropower project for Isagen, a Colombian energy company that owns and operates four other hydro plants and has options to build a further four. Sogamoso is a drill/blast project with two 800 m-long x 11 m-high arched section diversion tunnels, a 340 m-long x 7 m-wide headrace tunnel, a three-room powerhouse, and short tailrace. Contact Maria Perez at Isagen, tel +57 4 316 5120, e-mail mperez@isagen.com.co or visit www.isagen.com Spanish/English. 51/08.
