National Grid Company undertaking 3 m-diameter x 20 km-long cable tunnel from Elstree to St John's Wood at 20 m depth with seven shafts 20 m to 40 m deep. Ventilation and control buildings will be sited at Kilburn, Cricklewood, Colindale, Canons Corner and Elstree. Bidding process complete and award due October. Shortlist contractors are Murphy, AMEC, Miller and Amey. Visit www.halliburton.com and www.nationalgrid.com June 2000. Contractors Amec and Murphy shortlisted for $60 million, 20 km-long St Johns Wood to Edgware segmentally lined TBM tunnel with 5 shafts for National Grid. Award expected early-2001 for immediate start. Visit www.halliburton.com November 2000.Appointment of Murphy as preferred contractor for 20 km x 3 m-diameter segmentally lined tunnel with five shafts from Elstree to St John's Wood. Three TBMs will drive concurrently from 20 m-deep shafts at Elstree and in both directions at Cricklewood. Visit www.murphygroup.co.uk 02/01.