Geography of Sheffield county, from bituminous (ideal for domestic heating) to "Thick Coal", of a semi-anthracitic quality, appropriate for use in iron-smelting and in engine furnaces. Associated with the Upper Coal Measures were valuable iron ore deposits, occurring in the form of nodules. Large quantities of locally occurring fireclay were also exploited, as well as ganister (a clay used to make refractory furnace linings). The city of Sheffield derives its name from the River Sheaf which Until the 17th century was written as "Scheth" or "Sheath". Sidney Oldall Addy equates the origins of this word with the Old English "shed" (as in "water-shed")
Sheffield City Centre centre. Sheffield Station, serving as the entrance to this gateway has also been redeveloped whilst maintaining its grand Victorian façade. The CIQ is home to several bars and clubs (such as the Leadmill) and the Showroom Cinema, which books a more diverse selection of films than mainstream cinemas. Red Tape studies is also in the area. This area, in contrast to the other parts of the city centre, has seen less redevelopment in recent years as it lies outside the normal shopping areas and those frequented by tourists/visitors to the city. The West End District, lying to the West of