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")
2012 Sheffield City Council election were defending 12 seats, all of which they successfully held in 2011. The Liberal Democrats were defending 15 seats, 9 of which they lost to Labour in 2011. The Greens were defending 1 seat, which they held in 2011. The Conservatives, UKIP and the smaller parties had no councillors. This result has the following consequences for the total number of seats on the Council after the elections: "Death of Liberal Democrat Cllr Janice Sidebottom." "Death of Labour Cllr John Robson." 2012 Sheffield City Council election Sheffield City Council elections took place on Thursday 3 May 2012 as part of the