Taiwan's Premier Su Tseng-chang (R) and three former Premiers (L-R) Frank Hsieh, Yu Shyi-kun and Chang Chun-hsiung celebrate after driving through the Hsuehshan Tunnel, Asia's longest at 12.9 km (8 miles), June 16, 2006. The tunnel was opened on Friday after 15 years of construction that cost more than T$100 billion (US$3.1 billion). Thirteen workers died during its construction. REUTERS/Jimmy Chang (TAIWAN)