Following the completion of investigation and treatment of historical mine working across Phase 2b of the new Economic Link Road in Cross Hands (Llandeilo Road to Norton Road), we have been appointed to undertake the next phase of works to determine the nature and extent of underground coal mine workings within the ‘Big’ coal seam.

The initial stages comprise systematic drilling within of proposed road footprint in accordance with a methodology agreed with the Coal Authority. This is to determine the nature, depth and extent of the mine workings and assessment of the potential subsidence risk to the proposed road. This will be followed by ground treatment to stabilise the mine workings and ultimately validation to verify the success of the remedial works.

A case study describing our earlier involvement is presented here: www.earthsciencepartnership.co.uk/projects/link-road-geotechnical-design/