Marmaray tunnel bids in

TURKEY: Three prequalified consortia submitted technical bids on October 3 for construction of Istanbul's Marmaray tunnel, comprising a 1·8 km double-track submerged tube under the Bosporus together with 11·5 km of bored tunnel approaches on each side. Four groups had prequalified last year (RG 9.02 p465), but one subsequently withdrew.