Mine workings and mining spoil
We have extensive experience with sites affected by previous mining activities across the country. This experience includes designing developments on potentially combustible fill, managing excavations through active opencast operations and investigation, design and supervision of shallow mining void treatment beneath many development and developed sites.Advising on the development of a commercial estate, in Cannock, on open cast workings filled with loose tipped materials up to 45m deep. Peter Cowsill Ltd conducted large scale research in partnership with the
BRE to devise methods of overcoming collapse settlement potential in deep fill. The result of which was the design of a full scale innovative remediation effort which is currently underway.
Surcharge mound, Cannock Investigation of large mining spoil heaps in Wigan was carried out by Peter Cowsill Ltd, to review options for future use including assessment of combustibility. We have undertaken the investigation of a former opencast site used as landfill and producing landfill gas in Walsall. A large complex site in Stanton required detailed assessment, with shallow mine workings contamination from steel and iron works and several backfilled opencast voids; the work formed part of a feasibility study for a mixed use development. We were employed to provide advice on the re-development of opencast colliery partially involving gassing landfill; providing assessment of large former open cast coal and brick clay site including assessment of groundwater and high wall stability; undertaking design supervision and interpretation of former colliery with colliery spoil. Burnt shale and ceramic waste on a site destined for mixed use development, for a site in the East Midlands. 
Ripley Town Hall: shallow mine workings beneath the building Peter Cowsill Ltd was appointed as Resident Engineer for managing geotechnical elements of the River Aire diversion through an opencast site in Yorkshire. This including dealing with wash tailings and general opencast materials. The spoil was compacted in association with river works and a planned major road. Forensic examination of a car park severely damaged by collapse settlement was carried out at a pottery factory shop in Nottingham. Successful design of treatment measures for shallow mine workings have been devised, including shafts, for sites in Wales and Lancashire. Providing advice for major development in an area in Cheshire affected by brine pumping and faulting. Also appointed temporary agent for investigation of salt mining voids beneath Northwich. Advising tunnelling contractor on proposed tunnel below Weaver Navigation in a brine pumping area. Investigation of colliery sites’ spoil mounds and areas affected by deep mining in Staffordshire, including large mixed developments, public areas and housing estates. Sheffield, advising on large warehouse to be built on colliery spoil and imported fill. |