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 Hatters early 2000s, when the club briefly relocated to the English Institute of Sport in Sheffield, sharing the venue with the City of Sheffield Arrows. However, the size and cost of the venue prompted a further move to the All Saints Catholic High School's Sports Centre in 2005, where they have remained ever since. While not quite up to the standard set in the previous decade, the 2000s still saw overwhelmingly strong results for the club, only once finishing outside the top three in any of the major tournaments. (A quarter-final defeat in the National Cup in 2000.) With the London