Coal of a permanent brazier of coal on the altar of Minerva at Aquae Sulis (modern day Bath), although in fact easily accessible surface coal from what became the Somerset coalfield was in common use in quite lowly dwellings locally. Evidence of coal's use for iron-working in the city during the Roman period has been found. In Eschweiler, Rhineland, deposits of bituminous coal were used by the Romans for the smelting of iron ore. No evidence exists of the product being of great importance in Britain before about AD 1000, the High Middle Ages. Mineral coal came to be referred to
Sulis the similarly local pre-Hellenic deities in the local epithets that they assigned, associated with the cult of their Olympian pantheon at certain places (Zeus Molossos only at Dodona, for example). The Romans tended to lose sight of these specific locations, except in a few Etruscan cult inheritances and ideas like the "genius loci", the guardian spirit of a place. The gilt bronze cult statue of Sulis Minerva "appears to have been deliberately damaged" sometime in later Antiquity, perhaps by barbarian raiders, Christian zealots, or some other forces. About 130 curse tablets, mostly addressed to Sulis, have been found in the