Contractor Strabag constructing two 275 m-long x 100 sq m diversion tunnels, 620 m x 12 sq m grouting galleries, 140 m x 25 sq m access gallery, and 955 m x 75 sq m road tunnel for Borcka hydro project using four Atlas Copco drillrigs. Fleet will move 18 km upriver for similar programme at Muratli hydro project. Visit www.strabag.at and www.atlascopco.com December 2000.
