The Food Protection (Emergency Prohibitions) (Radioactivity in Sheep) (Wales) Order 1991

4.  An area comprising that part of the County of Gwynedd which lies within the following boundary:—

• From OS map reference SH 742483 generally eastwards through OS map references SH 745482 and SH 750483, to where it meets a stream at OS map reference SH 753483; generally south-eastwards along the fence following the course of the stream passing through OS map reference SH 759477 to where it meets with an unmarked road at OS map reference SH 761477; generally north-eastwards along the fence following the unmarked road to where it meets the Afon Machno at OS map reference SH 764479; generally northwards along the course of the Afon Machno to where it meets a forest fence at OS map reference SH 763482; generally westwards along the forest fence to OS map reference SH 757479; generally north-westwards along the forest fence to OS map reference SH 75648 1; generally eastwards along the forest fence to OS map reference SH 760485; generally westwards along the forest fence passing through OS map reference SH 750485 to OS map reference SH 744487; generally south-westwards along the forest fence to its junction with a fence at OS map reference SH 742483.