One of Britain's leading construction companies pulled out of the planned Yusufeli dam in Turkey yesterday after environmentalists said it would be the target for protests. The move by Amec avoids a big embarrassment for the [UK] Government, which has been asked to underwrite the firm's involvement in the £590m scheme...Critics say the new dam would displace 30,000 people by flooding the area around Yusufeli in north-east Turkey.