Radstock has been settled since the Iron Age, and its importance grew after the construction of the Fosse Way, a Roman road. The growth of the town occurred after 1763, when coal was discovered in the area. Large numbers of mines opened during the 19th century including several owned by the Waldegrave family, who had been Lords of the Manor since the English Civil War. The spoil heap of Writhlington colliery is now the Writhlington Site of Special Scientific Interest, which includes 3,000 tons of Upper Carboniferous spoil from which more than 1,400 insect fossil specimens have been recovered. The complex geology and narrow seams made coal extraction difficult. Tonnage increased throughout the 19th century, reaching a peak around 1901, when there were 79 separate collieries and annual production was 1,250,000 tons per annum. However, due to local geological difficulties and manpower shortages output declined and the number of pits reduced from 30 at the beginning of the 20th century to 14 by the mid-thirties; the last two pits, Kilmersdon and Writhlington, closed in September 1973. The Great Western Railway and the Somerset and Dorset Railway both established stations and marshalling yards in the town. The last passenger train services to Radstock closed in 1966. Manufacturing industries such as printing, binding and packaging provide some local employment. In recent years, Radstock has increasingly become a commuter town for the nearby cities of Bath and Bristol.