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 Youth Orchestra City of Sheffield Youth Orchestra The City of Sheffield Youth Orchestra is an orchestra in Sheffield, England. It has about 90 players whose age range from 13 to 21 years, with half still being at school with the rest at college, many of them training as professional musicians. The orchestra assembles three times a year during holiday periods for concentrated training courses with tutors and conductors of professional standing. They have worked with many distinguished soloists including Natalie Clein, Matthew Barley and Leonel Morales. The C.S.Y.O. is the only UK youth orchestra to be a triple winner in the Sainsbury’s