The initial collapse in 2007 caused damage to the garden of a property in Highbarns, so the repair work and stabilisation costs were covered by the property owner's insurance company.
A nearby mine, which was discovered beneath the road and pathway, was found to need urgent filling. We funded this urgent work, which was completed in 2008.
Between 2008 and 2011 we coordinated the work to secure funding from central government to fully investigate and repair the mines. Funding was approved by the Homes and Communities Agency in November 2011, and, following the surveys, work was undertaken to treat the mine. The complexity of the mine and the conditions of the ground meant that the treatment required was much more extensive than predicted. Altogether some 8,300 cubic metres of material (equivalent to 83 double decker buses) has been used to treat the mine - over four times as much as originally estimated based on works undertaken at similar sites elsewhere.
In October 2013, a further ground collapse at the junction of Highbarns and Meadow Road, meant that the treatment works had to be extended further still. This treatment has been completed and a final treatment report is available in the published technical reports section below.