Tarmac Group mixed concrete, asphalt and contracting businesses in the United Kingdom. Projects undertaken by or involving Tarmac Construction prior to demerger of that business in 1999 included the Preston Bypass completed in 1958, the St Albans Bypass completed in 1960, the Ahmed Hamdi Tunnel in Egypt completed in 1981, the Thames Barrier, the Joint European Torus and Drax Power Station all completed in 1984, the Merry Hill Shopping Centre completed in 1985, the Albert Dock refurbishment completed in 1988, the Conwy Road Tunnel completed in 1991, the Channel Tunnel completed in 1994, the Medway Road Tunnel completed in 1996, the Swindon
Cetacean surfacing behaviour present, particularly when they do not adhere to the regulations about approach. As an increase in SABs is beneficial to the whale watching tours’ participants, the tours may be encouraged to approach cetaceans closer than recommended by guidelines. There is a lack of understanding about the long-term effects of whale-watching on the behaviour of cetaceans, but it is theorised that it may cause avoidance of popular sites, or a decrease in the energy budget for individuals involved. Cetacean surfacing behaviour Cetacean surfacing behaviour or breaching is a group of behaviours demonstrated by the Cetacea infraorder when they come to the