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")
Wicker (Sheffield) that lies within a sharp bend of the River Don. Wicker (Sheffield) The Wicker is an arterial street in Sheffield, England noted for its history and viaduct that crosses it, the Grade II* listed "Wicker Arches". It runs in a north-east to south-westerly direction between Lady's Bridge and the Wicker Arches. For many years the Wicker was an A road, but it has been downgraded following the opening of the Sheffield Northern Relief Road. An early reference to the Wicker comes from the records of the Sheffield Town Trust for 1572: 'Item, payd to William Dyker for mending of the