This report presents the results of a heritage impact assessment that was carried out by South West Archaeology Ltd. (SWARCH) for a proposed wind turbine at Burngullow, St Mewan, Cornwall. The desk based assessment followed the guidance that is outlined in: Standard and Guidance for Archaeological Desk-Based Assessment (CIfA 2017); and Understanding Place: Historic Area Assessments in a Planning and Development Context (Historic England 2017). The historic visual impact assessment followed the guidance that is outlined in: Conservation Principles: Policies and Guidance for the Sustainable Management of the Historic Environment (English Heritage 2008); The Setting of Heritage Assets (Historic England 2017); Seeing History in the View (English Heritage 2011); and Managing Change in the Historic Environment: Setting (Historic Scotland 2016). The historic visual impact assessment referenced: Visual Assessment of Wind Farms: Best Practice (University of Newcastle 2002); and Guidelines for Landscape and Visual Impact Assessment: 3rd Edition (Landscape Institute 2013). The proposed site would be located towards the northern edge of the parish of St Mewan, close to the boundary with St Stephen-in-Brannel. This area lies within the china clay district that is attached to St Austell, a landscape largely despoiled by mineral extraction, but one where the disused pits are being reclaimed by nature. Prior to the massive expansion of the china clay pits in the 20th century this area was an upland landscape of open commons and marginal smallholdings. The proposed development would be located on the north-western edge of the surviving part of Burngullow Common. This part of the Common was attached to the Manor of Trewoon, held by the Kellys and, from the 17th century, in moieties by the Tremaynes of Heligan and the Hoblyns of Nanswhyden. The proposed development would be located on the edge of a block of ancient unenclosed moorland, with the embankments, haul roads, and vertiginous cliffs of Blackpool Pit to the north and to the west. Recent aerial photography indicates that the moorland is far from undisturbed, but the earthworks of two historic trackways and a line of lode-back mineral prospection pits survive in good condition and cross the area to the east and to the south of the proposed site. The archaeological potential of this moorland site is assessed as moderate. The impact of the proposed development on the buried archaeological resource would be permanent a...