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
Aquae Flaviae details of that founding remain obscure. Ptolemy suggests that it was founded in Turodi territory, a theory that has been strengthened by the existence of epigraphic evidence documenting the presence of Turodi. Aquae Flaviae Aquae Flaviae (or "Aquæ Flaviæ") is the ancient Roman city and former bishopric (now a Latin Catholic titular see) of Chaves, a municipality in the Portuguese district of Vila Real. The northwest peninsular region is an area of hot springs and Roman settlements linked to the exploitation of valuable natural resources. Aquae Flaviae was the principal "municipium civitas" in the northwest (from epigraphic findings) implanted in