History of Northwich was the Stanley's, later Earls of Derby and stayed in the family’s hands until the late 18th century. That salt production continued throughout the centuries can be seen through John Leland's description of the town in 1540: Although Leland described Northwich as a market town, there is no surviving charter for a market or fair. A market still exists today. Between 1642 and 1643, during the English Civil War, Northwich was fortified and garrisoned by Sir William Bereton for the Parliamentarians. The salt beds beneath Northwich were re-discovered in the 1670s by employees of the local Smith-Barry family. The Smith-Barrys
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