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")
City ward, Sheffield City ward, Sheffield City ward — which includes the districts of Highfield, Kelham Island and the city centre — is one of the 28 electoral wards in City of Sheffield, England. It covers the central area of the city. The ward was created following the 2015 local government boundary review out of part of the old Central ward, which, with a population of 36,412, was the largest ward in the UK. City is one of the wards that make up the Sheffield Central constituency. Sheffield City Centre ()—often just referred to as "town"—is the area within roughly ¾ mile (1.2