HC Deb 21 May 1984 vol 60 c366W
Mr. Skeet

asked the Secretary of State for Energy what information he has as to the comparative costs of underground stowage of colliery spoil as opposed to surface disposal in the vicinity of the mine.

Mr. Giles Shaw

The additional cost of underground stowage of colliery spoil as compared with local surface tipping is of the order £11 per tonne of spoil.