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 of Sheffield and Dearne Athletic Club to form Sheffield Athletic Club. At the turn of the century the club assumed the name City of Sheffield Athletic Club. The club competed at the Don Valley Stadium until it closed in September 2013, moving to Sheffield Hallam University City Athletics Stadium after refurbishments. In 2015 the club completed the merger with Dearne Athletic Club founded by Trevor Fox and competes under the name of City of Sheffield & Dearne Athletic Club. Senior Men: Young Athletes: Michael Corden Luke Cutts Gerald Phiri The club's vest consists of a thick blue stripe on the front and back in the centre,