Wessex Archaeology was commissioned by Watkin Jones Group, to undertake archaeological mitigation on a 0.4 ha parcel of land located at Land off Rockingham Street, Sheffield, South Yorkshire, S1 4EG. The mitigation comprised four excavation areas. Areas 1 and 2 were approximately 15 m by 15 m each and were centred on evaluation trenches 8 and 10 respectively. Area 3 was approximately 10 m by 16 m and located in the south-west of the site. Area 4 was approximately 7 m by 15 m and was centred on evaluation trench 14. In addition, archive research was conducted as presented in the Post-excavation Assessment and Updated Project Design report attached to this record. The aim of the research was to identify former industrial premises which operated within the site from the early 19th century onwards, and their associated functions and process flow wherever possible. This mitigation was part of staged approach, and followed other archaeological work, including desk-based assessment (Wardall Armstrong 2018), monitoring of a borehole survey (Wessex Archaeology 2019a), and trial trench evaluation (Wessex Archaeology 2020a). All works were undertaken in accordance with a series of specification documents which detailed the aims, methodologies and standards to be employed in order to undertake the evaluation. A Written Scheme of Investigation (WSI; Wardell Armstrong 2019) contained an overview of the approach to archaeological works on the site. Three addendums to this WSI were produced, the first covering mitigation areas 1 and 2 (Wessex Archaeology 2020b), the second covering mitigation area 3 (Wessex Archaeology 2020c), and the third covering mitigation area 4 (Wessex Archaeology 2020d). Dinah Saich, Principle Archaeologist with SYAS, approved each specification document (the WSI and addendums) on behalf of the Local Planning Authority (LPA). Please see attached Post-excavation Assessment and Updated Project Design report, References section for full details of referenced literature above. Fragments of early structures survived across areas 1 and 2. Two lime mortared walls (4351 and 4352) seen under watching brief conditions do not correlate with historic maps and may be the oldest surviving structures on the site (early-19th century or perhaps older). The remaining lime mortared structures correlate with historic maps, suggesting a date of construction of 1771-1853. Among these were elements of cellars of worker's housing. The south wall of crucible furnace cel...