Anti-HS2 campaigners have suggested that historic mining in Yorkshire will significantly impact on project delivery costs but HS2 has said that there is “no major risk”.
Residents in Crofton, near Wakefield raised the issue after an 8m crack opened up over a former mining area, which has since been backfilled and fenced off by the Coal Authority.
A number of residential properties in the area were demolished in the 1980s and 1990s as a result of subsidence associated with the Nostell and Sharlston collieries.
An HS2 spokesman said: “We are well aware of the rich history of coal mining in the area and have conducted assessments, including using information from the Coal Authority, on the suitability of the land. The findings from these studies were taken into account, alongside many other factors, during the route selection process. We are confident that the historical mining features in Crofton pose no major risk to the construction programme.
“We continue to engage with the Coal Authority as we progress the more detailed design of the railway, and will carry out a programme of ground investigation works prior to construction. This will inform the engineering measures we will put in place to safely manage the presence of historical coal mining beneath the railway.”
Detailed route design is currently underway ahead of submission of the hybrid Bill in 2019.