Robbins has announced the delivery of a 4.1 m-diameter Mk 12 TBM with single-track backup system and 4,500 m conveyor to Skanska/Cosapi/Chizaki to bore two 4.5 km reaches of the 15 km-long headrace tunnel. The 360 t/h conveyor system and 150 m belt storage cassette will be moved forward to an adit to be excavated at the halfway mark. A second 3.5 m TBM owned by Skanska will complete the headrace drive. Yuncan will have a capacity of 130 MW. More from www.robbinstbm.com March 2000.   First 6.7 km TBM drive to commence in July. Total length of tunnels will be 26 km at a cost of $117 million, and overall cost of the project is estimated to exceed $300 million. More from www.skanska.com May 2000.Skanska/Cosapi/Chizaki to start TBM boring of first 6.7 km-long, 4.1 m-diameter tunnel in July, 2000. Complete project requires 26 km of tunnels which include 9.5 km bored at 3.5 m-diameter and many drill/blast sections. Value of tunnels is $117 million and project total is $304 million. Visit www.skanska.se May 2000.