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 & Tinsley Canal Sheffield & Tinsley Canal The Sheffield & Tinsley Canal is a canal in the City of Sheffield, England. It runs from Tinsley, where it leaves the River Don, to the Sheffield Canal Basin (now Victoria Quays) in the city centre, passing through 11 locks. The maximum craft length that can navigate this lock system is with a beam of . Sheffield is on the River Don, but the upper reaches of the river were not navigable. In medieval times, the goods from Sheffield had to be transported overland to the nearest inland port – Bawtry on the River Idle. Later,