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 the Town Hall and Arundel Gate, one of the major roads running through the city centre. Sheffield’s largest building, St Pauls Tower, is situated on the edge of St Paul’s place, close to both the Town Hall and Sheffield Station. At the opposite end of Fargate to the Town Hall is the Cathedral Quarter. Here there are numerous law firms and employment agencies, as well as numerous shops and the city centre hub for the Sheffield Supertram. The city centre's main cinema, Odeon Sheffield, is located on Arundel Gate. Also within the central zone is The Moor. Once Sheffield's primary