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")
Sheffield City Centre Sheffield Parkway at Park Square and this in turn connects to the M1 motorway. Fargate is a major pedestrainised street in the heart of the city with its southern end lying outside the town hall. Also located at this point was the Wheel of Sheffield which, during 2009 and 2010, was a landmark on the Sheffield skyline. Several well-known High Street stores have a presence in this area or the connecting areas of Orchard Square or Commercial Street. The Moor has historically been one of Sheffield's most popular shopping zones. Like Fargate, it is a pedestrianised area and plays host