What are the Significant Economic Minerals in Kent?
1.3.1 The economic mineral resources of Kent reflect the complex geological, economic and social history of the area. Historically, the Coal Measures were of major economic importance until all East Kent Coal mines ceased operations by 1989. Until recently, Kent also had a thriving cement industry based on the chalk deposits of the Medway Valley and north-west Kent. There are now no active cement works in Kent, instead cement is imported into the county through a north Kent wharf. 1.3.2 Land-won construction aggregates are now the most economically significant mineral in the county. 1.3.3 Brickearth and clays have been used for brick and tile manufacture in Kent. These industries have declined in modern times. There remain some operational brick and tile works in Kent, although in one case, the brickearth resource is transported to East Sussex for brick manufacture. The Faversham area is the original source of the yellow London Stock bricks. Hand made, Kent peg tiles are also manufactu