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")
2018 Sheffield City Region mayoral election This means that the winning candidate has the support of a majority of voters who expressed a preference among the top two. All registered electors (British, Irish, Commonwealth and European Union citizens) living in the combined authority area aged 18 or over on 3 May 2018 were entitled to vote in the mayoral election. 2018 Sheffield City Region mayoral election The inaugural Sheffield City Region mayoral election was held on 3 May 2018 to elect the mayor of the Sheffield City Region. The mayor will lead the Sheffield City Region Combined Authority. Voting is restricted to the four councils which