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 Trust Sheffield City Trust Sheffield City Trust is a registered charity in the United Kingdom that owns and/or manages twelve entertainment and sports venues in Sheffield, England. The Trust was established in 1988 with three charitable objects: The charity is funded via its three wholly owned subsidiaries, Sheffield International Venues Ltd, Sheffield City Hall Limited and Sheffield Festival Limited. It operates the following venues: The trust always plays significant roles in the Race for Life events and the Sheffield Half Marathon. In 2005–6 the Trust had an income of £56.7million, expenditure of £55.8million and held assets valued at £316million. It is