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 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 are constituent members of the combined authority: Barnsley, Doncaster, Rotherham and Sheffield. Together these councils make up South Yorkshire. As the election took place using the supplementary vote system, electors were able to vote for a "first preference" candidate and a "second preference" candidate. The leading candidate needed to achieve over 50% of the