History of Northwich February 2004 a £28 million programme to stabilise the abandoned salt mines underneath Northwich was begun. The work was funded by the English Partnerships through its Land Stabilisation Programme, introduced to resolve issues associated with unstable mines around England. The four mines identified for work were Baron's Quay, Witton Bank, Neumann's and Penny's Lane. These mines were chosen because their subsidence was causing problems for the town centre. When they were abandoned the mines were left with supporting salt pillars. Modern salt mining leaves around 30% of the salt to form the pillars but, because of the wild-brine pumping, the
Economics of English Mining in the Middle Ages and churches. Four metals were mined commercially in England during the period: iron, tin, lead and silver using a variety of refining techniques. Coal was also mined from the 13th century onwards, Iron mining occurred in several locations including the main English centre in the Forest of Dean, as well as in Durham and the Weald. Some iron to meet English demand was also imported from the continent, especially by the late 13th century. By end of the 12th century, the older method of acquiring iron ore through strip mining was being supplemented by more advanced techniques, including tunnels, trenches