This site, much of which is at the time of writing (August 2005) subject to construction works for the Sheffield Inner Relief Road, stretches from Gibraltar Street, (an ancient route out of town) to the north. Industrial ribbon development along Gibraltar Street was underway by the end of the 18th century with the foundation of Hague and Parkin's Gibraltar Works by 1782 and 1794. This works, considered by Belford (2003) to be an early 'multi function' site (i.e. consisting of both steel making and "a wider range of processes . . . Such as heaths, forges, workshops, rolling mills or cutlery /edge tool production" (p126). Development of the rest of the polygon as development plots appears to have been rapid with Spring Street, Russell Street and Bowling Green Street laid out to their present extents by the 1808 W and J Fairbank survey of " the Town of Sheffield and its Environs". This basic framework was developed over the following 50 years to 1851 when the 60 inch to the mile OS plan shows buildings occupying most of the area. A variety of industry was present including two further planned multi function steel works at Spring Works (of which two mid nineteenth century cementation furnaces partially survive above ground and comprise a Scheduled Ancient Monument within this polygon) and at the Ebenezer Works on Russell Street (established 1830). Other important features of the mid 19th century layout of this area included back to back housing courts side by side with industrial workshops (for instance the block alongside Spring Street identified during the desktop evaluation of possible routes for the Sheffield Inner Relief Road (Atchison 2002, sites 38 and 37). The area was mostly cleared in the 1970s and rebuilt with the current large shed type buildings. Some late 19th century buildings surviving along Gibraltar Street Frontage. Despite extremely important Bower Spring Furnaces this area is overall only of fragmentary legibility.