Blisworth Limestone Formation today in the seas off the Bahamas (Kirkaldy p. 59). Much of it also contains marine shells, notably of oyster. Subsequently, the site was submerged less deeply so that the overlying Blisworth Clay was deposited in brackish conditions. (Gallois p. 20) The stratum is known as Blisworth Limestone because it was first studied at Blisworth in Northamptonshire when the Blisworth tunnel was being dug for what is now called the Grand Union Canal. The tunnel finally opened in 1805. Blisworth limestone is a generally thin but widely spread deposit in eastern England. It becomes thicker as one progresses southward from
Stad Ship Tunnel Norwegian Coastal Administration concluded that a tunnel would not be economical. It looked at two sizes, small and large, which would cost respectively. The report concluded that the utility, including saved waiting costs, for shippers have a present value of , respectively, and in saved accident costs. A similar report from 2007 concluded that the tunnel would be economical. The Coastal Administration stated that the differences were because of new and better data. Stad Ship Tunnel The Stad Ship Tunnel () is a proposed canal and tunnel to bypass the Stad peninsula in Selje Municipality in Sogn og Fjordane county,