Open-pan salt making from lead using wood as a fuel. In Britain they established towns for salt production at Droitwich in Worcestershire, and Nantwich, Middlewich and Northwich in Cheshire. In the early Middle Ages these developed into the 'wich' towns of Cheshire. Small 'wich' houses containing several lead pans to evapourate the brine into salt, clustered around brine springs within each of the towns. The open-pan process continued largely unchanged throughout the medieval period. A 17th-century German wood-cut by Georgius Agricola shows the process in detail. Excavated evidence has uncovered wooden rakes to draw salt crystals to the side of the pan, and
Ashton-in-Makerfield Lancashire Coalfield, and so was a coal mining district. The name Ashton derives from Old English and means the "farmstead where the ash-trees grow"; it is a common name and is found locally in Ashton-under-Lyne in Tameside and Ashton upon Mersey in Trafford. The town's name was recorded as "Eston" in 1212. Later, the suffix "in-Makerfield" was added, which relates the name of the old district of Makerfield of which Ashton was a part; Makerfield derives from the Celtic for a wall or ruin and the Old English word "feld", meaning "open land". St Thomas' Church of England parish church