HC Deb 14 March 1968 vol 760 c373W
Mr. Anderson

asked the Secretary of State for Wales whether he is satisfied that the height of the fencing on the Heads of the Valleys road is sufficient to prevent sheep gaining access to the road.

Mr. Cledwyn Hughes

Yes. The type and height of these fences were agreed with the farmers whose land adjoins the road. Where animals gain access to the road this is because gates have been left open or fences wantonly damaged.