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
Blisworth canal, the ore was loaded by hand into canal boats for transport to Staffordshire.This quarry closed in 1855 but was reopened in 1859 closed again in 1861 and reopened in 1863. At this time the ore was taken by horse and cart through the village to be loaded into railway wagons at Blisworth Station. In 1863 however the tramway was reopened and canal boats took the ore to Blisworth Station for transhipment to railway wagons. Steam cranes were installed at the canal wharf and at the station. The ore was now taken to South Wales. In 1903 the ore was