Sheffield link of the Don Navigation completed by 1819 (http://www.rotherhamunofficial.co.uk/riversandcanals/rotherhamriverscanals.htm#canals). This section (known as Tinsley Bottom Locks) completes the steel descent of the river from Sheffield to Rotherham. The wharfage associated with the canal seems to have attracted the siting of the Tinsley Rolling Mills. Photographic evidence from Picture Sheffield.com shows wharfage associated with the earliest phase of the rolling mills (between the canal and Don). Map evidence shows that by 1923 the Rolling mills had expanded to the north west bank of the Don where they continued to expand. The mills are still shown on the 1972 National Grid survey but all the sites within this polygon apart from the lock basins have been cleared by 1988. Area now regenerating as scrub.